---
_id: '43194'
abstract:
- lang: eng
text: For incident light polarized perpendicular to the tube axis the multi-band
semiconductor Bloch equations (MB-SBEs) that involve various screened interband
Coulomb interactions (ICIs) are derived. The calculated E 12 peak is very close
to the longitudinal excitonic peak E 22. Compared with the previous theoretical
peak positions, the blue-shift of the peak in our results is about 0.5 eV. Then,
subsequent detailed analyses show that the screening effect on the diagonal ICIs
(D-ICIs) plays a key role in this big blue-shift. The valley-degenerate transverse
pair excitations holding the same selection rule further enhance the screening
effect on D-ICIs. Specially at q = 0 the dielectric function acting on the D-ICIs
enhances two times. In our calculation the strong screening effect contributes
90% of the big blue-shift, while the non-diagonal ICIs (ND-ICIs) contribute to
10% of the blue-shift.
article_number: '230'
author:
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Hong
full_name: Liu, Hong
last_name: Liu
citation:
ama: Meier T, Liu H. Influence of strong screening effect on the perpendicular polarized
linear excitonic absorption spectra of semiconducting carbon nanotubes. The
European Physical Journal B. 2016;89. doi:10.1140/epjb/e2016-70476-8
apa: Meier, T., & Liu, H. (2016). Influence of strong screening effect on the
perpendicular polarized linear excitonic absorption spectra of semiconducting
carbon nanotubes. The European Physical Journal B, 89, Article 230.
https://doi.org/10.1140/epjb/e2016-70476-8
bibtex: '@article{Meier_Liu_2016, title={Influence of strong screening effect on
the perpendicular polarized linear excitonic absorption spectra of semiconducting
carbon nanotubes}, volume={89}, DOI={10.1140/epjb/e2016-70476-8},
number={230}, journal={The European Physical Journal B}, author={Meier, Torsten
and Liu, Hong}, year={2016} }'
chicago: Meier, Torsten, and Hong Liu. “Influence of Strong Screening Effect on
the Perpendicular Polarized Linear Excitonic Absorption Spectra of Semiconducting
Carbon Nanotubes.” The European Physical Journal B 89 (2016). https://doi.org/10.1140/epjb/e2016-70476-8.
ieee: 'T. Meier and H. Liu, “Influence of strong screening effect on the perpendicular
polarized linear excitonic absorption spectra of semiconducting carbon nanotubes,”
The European Physical Journal B, vol. 89, Art. no. 230, 2016, doi: 10.1140/epjb/e2016-70476-8.'
mla: Meier, Torsten, and Hong Liu. “Influence of Strong Screening Effect on the
Perpendicular Polarized Linear Excitonic Absorption Spectra of Semiconducting
Carbon Nanotubes.” The European Physical Journal B, vol. 89, 230, 2016,
doi:10.1140/epjb/e2016-70476-8.
short: T. Meier, H. Liu, The European Physical Journal B 89 (2016).
date_created: 2023-03-29T20:50:00Z
date_updated: 2023-03-29T20:58:34Z
department:
- _id: '293'
doi: 10.1140/epjb/e2016-70476-8
intvolume: ' 89'
language:
- iso: eng
publication: The European Physical Journal B
publication_status: published
status: public
title: Influence of strong screening effect on the perpendicular polarized linear
excitonic absorption spectra of semiconducting carbon nanotubes
type: journal_article
user_id: '49063'
volume: 89
year: '2016'
...
---
_id: '13917'
abstract:
- lang: eng
text: We present the synthesis of indium oxide (In2O3) inverse opal films with photonic
stop bands in the visible range by a structure replication method. Artificial
opal films made of poly(methyl methacrylate) (PMMA) spheres are utilized as template.
The opal films are deposited via sedimentation facilitated by ultrasonication,
and then impregnated by indium nitrate solution, which is thermally converted
to In2O3 after drying. The quality of the resulting inverse opal film depends
on many parameters; in this study the water content of the indium nitrate/PMMA
composite after drying is investigated. Comparison of the reflectance spectra
recorded by vis-spectroscopy with simulated data shows a good agreement between
the peak position and calculated stop band positions for the inverse opals. This
synthesis is less complex and highly efficient compared to most other techniques
and is suitable for use in many applications.
author:
- first_name: Sabrina
full_name: Amrehn, Sabrina
last_name: Amrehn
- first_name: Daniel
full_name: Berghoff, Daniel
id: '38175'
last_name: Berghoff
- first_name: Andreas
full_name: Nikitin, Andreas
last_name: Nikitin
- first_name: Matthias
full_name: Reichelt, Matthias
id: '138'
last_name: Reichelt
- first_name: Xia
full_name: Wu, Xia
last_name: Wu
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Thorsten
full_name: Wagner, Thorsten
last_name: Wagner
citation:
ama: Amrehn S, Berghoff D, Nikitin A, et al. Indium oxide inverse opal films synthesized
by structure replication method. Photonics and Nanostructures - Fundamentals
and Applications. 2016;19:55-63. doi:10.1016/j.photonics.2016.02.005
apa: Amrehn, S., Berghoff, D., Nikitin, A., Reichelt, M., Wu, X., Meier, T., &
Wagner, T. (2016). Indium oxide inverse opal films synthesized by structure replication
method. Photonics and Nanostructures - Fundamentals and Applications, 19,
55–63. https://doi.org/10.1016/j.photonics.2016.02.005
bibtex: '@article{Amrehn_Berghoff_Nikitin_Reichelt_Wu_Meier_Wagner_2016, title={Indium
oxide inverse opal films synthesized by structure replication method}, volume={19},
DOI={10.1016/j.photonics.2016.02.005},
journal={Photonics and Nanostructures - Fundamentals and Applications}, author={Amrehn,
Sabrina and Berghoff, Daniel and Nikitin, Andreas and Reichelt, Matthias and Wu,
Xia and Meier, Torsten and Wagner, Thorsten}, year={2016}, pages={55–63} }'
chicago: 'Amrehn, Sabrina, Daniel Berghoff, Andreas Nikitin, Matthias Reichelt,
Xia Wu, Torsten Meier, and Thorsten Wagner. “Indium Oxide Inverse Opal Films Synthesized
by Structure Replication Method.” Photonics and Nanostructures - Fundamentals
and Applications 19 (2016): 55–63. https://doi.org/10.1016/j.photonics.2016.02.005.'
ieee: 'S. Amrehn et al., “Indium oxide inverse opal films synthesized by
structure replication method,” Photonics and Nanostructures - Fundamentals
and Applications, vol. 19, pp. 55–63, 2016, doi: 10.1016/j.photonics.2016.02.005.'
mla: Amrehn, Sabrina, et al. “Indium Oxide Inverse Opal Films Synthesized by Structure
Replication Method.” Photonics and Nanostructures - Fundamentals and Applications,
vol. 19, 2016, pp. 55–63, doi:10.1016/j.photonics.2016.02.005.
short: S. Amrehn, D. Berghoff, A. Nikitin, M. Reichelt, X. Wu, T. Meier, T. Wagner,
Photonics and Nanostructures - Fundamentals and Applications 19 (2016) 55–63.
date_created: 2019-10-18T08:31:34Z
date_updated: 2023-04-16T21:20:25Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '2'
- _id: '308'
- _id: '230'
doi: 10.1016/j.photonics.2016.02.005
funded_apc: '1'
intvolume: ' 19'
language:
- iso: eng
page: 55-63
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Photonics and Nanostructures - Fundamentals and Applications
publication_identifier:
issn:
- 1569-4410
publication_status: published
status: public
title: Indium oxide inverse opal films synthesized by structure replication method
type: journal_article
user_id: '49063'
volume: 19
year: '2016'
...
---
_id: '13915'
abstract:
- lang: eng
text: "The dynamics of a pair of harmonic oscillators represented by three-dimensional
fields coupled with a repulsive cubic nonlinearity is investigated through direct
simulations of the respective field equations and with the help of the finite-mode
Galerkin approximation (GA), which represents the two interacting fields by a
superposition of \r\n3+3 harmonic-oscillator p-wave eigenfunctions with orbital
and magnetic quantum numbers l=1 and m=1, 0, −1. The system can be implemented
in binary Bose-Einstein condensates, demonstrating the potential of the atomic
condensates to emulate various complex modes predicted by classical field theories.
First, the GA very accurately predicts a broadly degenerate set of the system's
ground states in the p-wave manifold, in the form of complexes built of a dipole
coaxial with another dipole or vortex, as well as complexes built of mutually
orthogonal dipoles. Next, pairs of noncoaxial vortices and/or dipoles, including
pairs of mutually perpendicular vortices, develop remarkably stable dynamical
regimes, which feature periodic exchange of the angular momentum and periodic
switching between dipoles and vortices. For a moderately strong nonlinearity,
simulations of the coupled-field equations agree very well with results produced
by the GA, demonstrating that the dynamics is accurately spanned by the set of
six modes limited to l=1."
author:
- first_name: R.
full_name: Driben, R.
last_name: Driben
- first_name: V. V.
full_name: Konotop, V. V.
last_name: Konotop
- first_name: B. A.
full_name: Malomed, B. A.
last_name: Malomed
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: Driben R, Konotop VV, Malomed BA, Meier T. Dynamics of dipoles and vortices
in nonlinearly coupled three-dimensional field oscillators. Physical Review
E. 2016;94(1). doi:10.1103/physreve.94.012207
apa: Driben, R., Konotop, V. V., Malomed, B. A., & Meier, T. (2016). Dynamics
of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators.
Physical Review E, 94(1). https://doi.org/10.1103/physreve.94.012207
bibtex: '@article{Driben_Konotop_Malomed_Meier_2016, title={Dynamics of dipoles
and vortices in nonlinearly coupled three-dimensional field oscillators}, volume={94},
DOI={10.1103/physreve.94.012207},
number={1}, journal={Physical Review E}, author={Driben, R. and Konotop, V. V.
and Malomed, B. A. and Meier, Torsten}, year={2016} }'
chicago: Driben, R., V. V. Konotop, B. A. Malomed, and Torsten Meier. “Dynamics
of Dipoles and Vortices in Nonlinearly Coupled Three-Dimensional Field Oscillators.”
Physical Review E 94, no. 1 (2016). https://doi.org/10.1103/physreve.94.012207.
ieee: 'R. Driben, V. V. Konotop, B. A. Malomed, and T. Meier, “Dynamics of dipoles
and vortices in nonlinearly coupled three-dimensional field oscillators,” Physical
Review E, vol. 94, no. 1, 2016, doi: 10.1103/physreve.94.012207.'
mla: Driben, R., et al. “Dynamics of Dipoles and Vortices in Nonlinearly Coupled
Three-Dimensional Field Oscillators.” Physical Review E, vol. 94, no. 1,
2016, doi:10.1103/physreve.94.012207.
short: R. Driben, V.V. Konotop, B.A. Malomed, T. Meier, Physical Review E 94 (2016).
date_created: 2019-10-18T08:29:20Z
date_updated: 2023-04-16T21:19:43Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
doi: 10.1103/physreve.94.012207
funded_apc: '1'
intvolume: ' 94'
issue: '1'
language:
- iso: eng
publication: Physical Review E
publication_identifier:
issn:
- 2470-0045
- 2470-0053
publication_status: published
status: public
title: Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field
oscillators
type: journal_article
user_id: '49063'
volume: 94
year: '2016'
...
---
_id: '13918'
article_number: 97460W
author:
- first_name: Reinold
full_name: Podzimski, Reinold
last_name: Podzimski
- first_name: Huynh Thanh
full_name: Duc, Huynh Thanh
last_name: Duc
- first_name: Shekhar
full_name: Priyadarshi, Shekhar
last_name: Priyadarshi
- first_name: Christian
full_name: Schmidt, Christian
last_name: Schmidt
- first_name: Mark
full_name: Bieler, Mark
last_name: Bieler
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: 'Podzimski R, Duc HT, Priyadarshi S, Schmidt C, Bieler M, Meier T. Photocurrents
in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch
equations. In: Betz M, Elezzabi AY, eds. Ultrafast Phenomena and Nanophotonics
XX. Vol 9746. SPIE Proceedings. SPIE; 2016. doi:10.1117/12.2208572'
apa: Podzimski, R., Duc, H. T., Priyadarshi, S., Schmidt, C., Bieler, M., &
Meier, T. (2016). Photocurrents in semiconductors and semiconductor quantum wells
analyzed by k.p-based Bloch equations. In M. Betz & A. Y. Elezzabi (Eds.),
Ultrafast Phenomena and Nanophotonics XX (No. 97460W; Vol. 9746). SPIE.
https://doi.org/10.1117/12.2208572
bibtex: '@inproceedings{Podzimski_Duc_Priyadarshi_Schmidt_Bieler_Meier_2016, series={SPIE
Proceedings}, title={Photocurrents in semiconductors and semiconductor quantum
wells analyzed by k.p-based Bloch equations}, volume={9746}, DOI={10.1117/12.2208572},
number={97460W}, booktitle={Ultrafast Phenomena and Nanophotonics XX}, publisher={SPIE},
author={Podzimski, Reinold and Duc, Huynh Thanh and Priyadarshi, Shekhar and Schmidt,
Christian and Bieler, Mark and Meier, Torsten}, editor={Betz, Markus and Elezzabi,
Abdulhakem Y.}, year={2016}, collection={SPIE Proceedings} }'
chicago: Podzimski, Reinold, Huynh Thanh Duc, Shekhar Priyadarshi, Christian Schmidt,
Mark Bieler, and Torsten Meier. “Photocurrents in Semiconductors and Semiconductor
Quantum Wells Analyzed by k.p-Based Bloch Equations.” In Ultrafast Phenomena
and Nanophotonics XX, edited by Markus Betz and Abdulhakem Y. Elezzabi, Vol.
9746. SPIE Proceedings. SPIE, 2016. https://doi.org/10.1117/12.2208572.
ieee: 'R. Podzimski, H. T. Duc, S. Priyadarshi, C. Schmidt, M. Bieler, and T. Meier,
“Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based
Bloch equations,” in Ultrafast Phenomena and Nanophotonics XX, 2016, vol.
9746, doi: 10.1117/12.2208572.'
mla: Podzimski, Reinold, et al. “Photocurrents in Semiconductors and Semiconductor
Quantum Wells Analyzed by k.p-Based Bloch Equations.” Ultrafast Phenomena and
Nanophotonics XX, edited by Markus Betz and Abdulhakem Y. Elezzabi, vol. 9746,
97460W, SPIE, 2016, doi:10.1117/12.2208572.
short: 'R. Podzimski, H.T. Duc, S. Priyadarshi, C. Schmidt, M. Bieler, T. Meier,
in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XX, SPIE,
2016.'
date_created: 2019-10-18T08:33:43Z
date_updated: 2023-04-16T21:21:21Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
doi: 10.1117/12.2208572
editor:
- first_name: Markus
full_name: Betz, Markus
last_name: Betz
- first_name: Abdulhakem Y.
full_name: Elezzabi, Abdulhakem Y.
last_name: Elezzabi
intvolume: ' 9746'
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Ultrafast Phenomena and Nanophotonics XX
publication_status: published
publisher: SPIE
series_title: SPIE Proceedings
status: public
title: Photocurrents in semiconductors and semiconductor quantum wells analyzed by
k.p-based Bloch equations
type: conference
user_id: '49063'
volume: 9746
year: '2016'
...
---
_id: '4246'
abstract:
- lang: eng
text: Spins in semiconductor quantum dots have been considered as prospective quantum
bit excitations. Their coupling to the crystal environment manifests itself in
a limitation of the spin coherence times to the microsecond range, both for electron
and hole spins. This rather short-lived coherence compared to atomic states asks
for manipulations on timescales as short as possible. Due to the huge dipole moment
for transitions between the valence and conduction band, pulsed laser systems
offer the possibility to perform manipulations within picoseconds or even faster.
Here, we report on results that show the potential of optical spin manipulations
with currently available pulsed laser systems. Using picosecond laser pulses,
we demonstrate optically induced spin rotations of electron and hole spins. We
further realize the optical decoupling of the hole spins from the nuclear surrounding
at the nanosecond timescales and demonstrate an all-optical spin tomography for
interacting electron spin sub-ensembles.
article_number: '17'
article_type: original
author:
- first_name: S.
full_name: Varwig, S.
last_name: Varwig
- first_name: E.
full_name: Evers, E.
last_name: Evers
- first_name: A.
full_name: Greilich, A.
last_name: Greilich
- first_name: D. R.
full_name: Yakovlev, D. R.
last_name: Yakovlev
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: A. D.
full_name: Wieck, A. D.
last_name: Wieck
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Artur
full_name: Zrenner, Artur
id: '606'
last_name: Zrenner
orcid: 0000-0002-5190-0944
- first_name: M.
full_name: Bayer, M.
last_name: Bayer
citation:
ama: Varwig S, Evers E, Greilich A, et al. Advanced optical manipulation of carrier
spins in (In,Ga)As quantum dots. Applied Physics B. 2016;122(1). doi:10.1007/s00340-015-6274-y
apa: Varwig, S., Evers, E., Greilich, A., Yakovlev, D. R., Reuter, D., Wieck, A.
D., Meier, T., Zrenner, A., & Bayer, M. (2016). Advanced optical manipulation
of carrier spins in (In,Ga)As quantum dots. Applied Physics B, 122(1),
Article 17. https://doi.org/10.1007/s00340-015-6274-y
bibtex: '@article{Varwig_Evers_Greilich_Yakovlev_Reuter_Wieck_Meier_Zrenner_Bayer_2016,
title={Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots},
volume={122}, DOI={10.1007/s00340-015-6274-y},
number={117}, journal={Applied Physics B}, publisher={Springer Nature}, author={Varwig,
S. and Evers, E. and Greilich, A. and Yakovlev, D. R. and Reuter, Dirk and Wieck,
A. D. and Meier, Torsten and Zrenner, Artur and Bayer, M.}, year={2016} }'
chicago: Varwig, S., E. Evers, A. Greilich, D. R. Yakovlev, Dirk Reuter, A. D. Wieck,
Torsten Meier, Artur Zrenner, and M. Bayer. “Advanced Optical Manipulation of
Carrier Spins in (In,Ga)As Quantum Dots.” Applied Physics B 122, no. 1
(2016). https://doi.org/10.1007/s00340-015-6274-y.
ieee: 'S. Varwig et al., “Advanced optical manipulation of carrier spins
in (In,Ga)As quantum dots,” Applied Physics B, vol. 122, no. 1, Art. no.
17, 2016, doi: 10.1007/s00340-015-6274-y.'
mla: Varwig, S., et al. “Advanced Optical Manipulation of Carrier Spins in (In,Ga)As
Quantum Dots.” Applied Physics B, vol. 122, no. 1, 17, Springer Nature,
2016, doi:10.1007/s00340-015-6274-y.
short: S. Varwig, E. Evers, A. Greilich, D.R. Yakovlev, D. Reuter, A.D. Wieck, T.
Meier, A. Zrenner, M. Bayer, Applied Physics B 122 (2016).
date_created: 2018-08-29T08:35:10Z
date_updated: 2023-03-26T22:40:24Z
department:
- _id: '15'
- _id: '230'
- _id: '35'
- _id: '170'
- _id: '293'
- _id: '292'
doi: 10.1007/s00340-015-6274-y
intvolume: ' 122'
issue: '1'
keyword:
- Spin Polarization
- Pump Pulse
- Trion
- Spin Component
- Coherence Time
language:
- iso: eng
publication: Applied Physics B
publication_identifier:
issn:
- 0946-2171
- 1432-0649
publication_status: published
publisher: Springer Nature
status: public
title: Advanced optical manipulation of carrier spins in (In,Ga)As quantum dots
type: journal_article
user_id: '49063'
volume: 122
year: '2016'
...
---
_id: '13910'
article_number: '34847'
author:
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Rodislav
full_name: Driben, Rodislav
last_name: Driben
- first_name: Boris A.
full_name: Malomed, Boris A.
last_name: Malomed
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
citation:
ama: Ma X, Driben R, Malomed BA, Meier T, Schumacher S. Two-dimensional symbiotic
solitons and vortices in binary condensates with attractive cross-species interaction.
Scientific Reports. 2016;6. doi:10.1038/srep34847
apa: Ma, X., Driben, R., Malomed, B. A., Meier, T., & Schumacher, S. (2016).
Two-dimensional symbiotic solitons and vortices in binary condensates with attractive
cross-species interaction. Scientific Reports, 6, Article 34847.
https://doi.org/10.1038/srep34847
bibtex: '@article{Ma_Driben_Malomed_Meier_Schumacher_2016, title={Two-dimensional
symbiotic solitons and vortices in binary condensates with attractive cross-species
interaction}, volume={6}, DOI={10.1038/srep34847},
number={34847}, journal={Scientific Reports}, author={Ma, Xuekai and Driben, Rodislav
and Malomed, Boris A. and Meier, Torsten and Schumacher, Stefan}, year={2016}
}'
chicago: Ma, Xuekai, Rodislav Driben, Boris A. Malomed, Torsten Meier, and Stefan
Schumacher. “Two-Dimensional Symbiotic Solitons and Vortices in Binary Condensates
with Attractive Cross-Species Interaction.” Scientific Reports 6 (2016).
https://doi.org/10.1038/srep34847.
ieee: 'X. Ma, R. Driben, B. A. Malomed, T. Meier, and S. Schumacher, “Two-dimensional
symbiotic solitons and vortices in binary condensates with attractive cross-species
interaction,” Scientific Reports, vol. 6, Art. no. 34847, 2016, doi: 10.1038/srep34847.'
mla: Ma, Xuekai, et al. “Two-Dimensional Symbiotic Solitons and Vortices in Binary
Condensates with Attractive Cross-Species Interaction.” Scientific Reports,
vol. 6, 34847, 2016, doi:10.1038/srep34847.
short: X. Ma, R. Driben, B.A. Malomed, T. Meier, S. Schumacher, Scientific Reports
6 (2016).
date_created: 2019-10-18T08:16:22Z
date_updated: 2023-03-26T22:45:28Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
doi: 10.1038/srep34847
funded_apc: '1'
intvolume: ' 6'
language:
- iso: eng
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '60'
name: TRR 142 - Subproject A3
- _id: '59'
name: TRR 142 - Subproject A2
- _id: '61'
name: TRR 142 - Subproject A4
- _id: '56'
name: TRR 142 - Project Area C
- _id: '64'
name: TRR 142 - Subproject A7
- _id: '72'
name: TRR 142 - Subproject C2
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
status: public
title: Two-dimensional symbiotic solitons and vortices in binary condensates with
attractive cross-species interaction
type: journal_article
user_id: '49063'
volume: 6
year: '2016'
...
---
_id: '43196'
abstract:
- lang: eng
text: A method is presented to transfer a system of two-level atoms from a spin
coherent state to a maximally spin squeezed Dicke state, relevant for quantum
metrology and quantum information processing. The initial state is the ground
state of an initial linear Hamiltonian that is gradually turned into a final quadratic
Hamiltonian whose ground state is the selected Dicke state. We use compensating
operators to suppress diabatic transitions to unwanted states that would occur
if the change were not slow. We discuss the possibilities of constructing the
compensating operators by sequential application of quadratic Hamiltonians available
in experiments.
article_number: '023815'
author:
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: T.
full_name: Opatrný, T.
last_name: Opatrný
- first_name: H.
full_name: Saberi, H.
last_name: Saberi
- first_name: E.
full_name: Brion, E.
last_name: Brion
- first_name: K.
full_name: Mølmer, K.
last_name: Mølmer
citation:
ama: Meier T, Opatrný T, Saberi H, Brion E, Mølmer K. Counterdiabatic driving in
spin squeezing and Dicke-state preparation. Physical Review A. 2016;93(2).
doi:10.1103/PhysRevA.93.023815
apa: Meier, T., Opatrný, T., Saberi, H., Brion, E., & Mølmer, K. (2016). Counterdiabatic
driving in spin squeezing and Dicke-state preparation. Physical Review A,
93(2), Article 023815. https://doi.org/10.1103/PhysRevA.93.023815
bibtex: '@article{Meier_Opatrný_Saberi_Brion_Mølmer_2016, title={Counterdiabatic
driving in spin squeezing and Dicke-state preparation}, volume={93}, DOI={10.1103/PhysRevA.93.023815},
number={2023815}, journal={Physical Review A}, author={Meier, Torsten and Opatrný,
T. and Saberi, H. and Brion, E. and Mølmer, K.}, year={2016} }'
chicago: Meier, Torsten, T. Opatrný, H. Saberi, E. Brion, and K. Mølmer. “Counterdiabatic
Driving in Spin Squeezing and Dicke-State Preparation.” Physical Review A
93, no. 2 (2016). https://doi.org/10.1103/PhysRevA.93.023815.
ieee: 'T. Meier, T. Opatrný, H. Saberi, E. Brion, and K. Mølmer, “Counterdiabatic
driving in spin squeezing and Dicke-state preparation,” Physical Review A,
vol. 93, no. 2, Art. no. 023815, 2016, doi: 10.1103/PhysRevA.93.023815.'
mla: Meier, Torsten, et al. “Counterdiabatic Driving in Spin Squeezing and Dicke-State
Preparation.” Physical Review A, vol. 93, no. 2, 023815, 2016, doi:10.1103/PhysRevA.93.023815.
short: T. Meier, T. Opatrný, H. Saberi, E. Brion, K. Mølmer, Physical Review A 93
(2016).
date_created: 2023-03-29T21:03:04Z
date_updated: 2023-03-29T21:06:10Z
department:
- _id: '293'
doi: 10.1103/PhysRevA.93.023815
intvolume: ' 93'
issue: '2'
language:
- iso: eng
publication: Physical Review A
publication_status: published
status: public
title: Counterdiabatic driving in spin squeezing and Dicke-state preparation
type: journal_article
user_id: '49063'
volume: 93
year: '2016'
...
---
_id: '43195'
abstract:
- lang: eng
text: We propose an entanglement classification for symmetric quantum states based
on their diagonal matrix-product-state (MPS) representation. The proposed classification,
which preserves the stochastic local operation assisted with classical communication
(SLOCC) criterion, relates entanglement families to the interaction length of
Hamiltonians. In this manner, we establish a connection between entanglement classification
and condensed matter models from a quantum information perspective. Moreover,
we introduce a scalable nesting property for the proposed entanglement classification,
in which the families for N parties carry over to the N + 1 case. Finally, using
techniques from algebraic geometry, we prove that the minimal nontrivial interaction
length n for any symmetric state is bounded by .
article_number: '30188 '
author:
- first_name: M.
full_name: Sanz, M.
last_name: Sanz
- first_name: I.L.
full_name: Egusquiza, I.L.
last_name: Egusquiza
- first_name: R. Di
full_name: Candia, R. Di
last_name: Candia
- first_name: H.
full_name: Saberi, H.
last_name: Saberi
- first_name: L.
full_name: Lamata, L.
last_name: Lamata
- first_name: E.
full_name: Solano, E.
last_name: Solano
citation:
ama: Sanz M, Egusquiza IL, Candia RD, Saberi H, Lamata L, Solano E. Entanglement
classification with matrix product states. Scientific Reports. 2016;6.
doi:10.1038/srep30188
apa: Sanz, M., Egusquiza, I. L., Candia, R. D., Saberi, H., Lamata, L., & Solano,
E. (2016). Entanglement classification with matrix product states. Scientific
Reports, 6, Article 30188. https://doi.org/10.1038/srep30188
bibtex: '@article{Sanz_Egusquiza_Candia_Saberi_Lamata_Solano_2016, title={Entanglement
classification with matrix product states}, volume={6}, DOI={10.1038/srep30188},
number={30188}, journal={Scientific Reports}, author={Sanz, M. and Egusquiza,
I.L. and Candia, R. Di and Saberi, H. and Lamata, L. and Solano, E.}, year={2016}
}'
chicago: Sanz, M., I.L. Egusquiza, R. Di Candia, H. Saberi, L. Lamata, and E. Solano.
“Entanglement Classification with Matrix Product States.” Scientific Reports
6 (2016). https://doi.org/10.1038/srep30188.
ieee: 'M. Sanz, I. L. Egusquiza, R. D. Candia, H. Saberi, L. Lamata, and E. Solano,
“Entanglement classification with matrix product states,” Scientific Reports,
vol. 6, Art. no. 30188, 2016, doi: 10.1038/srep30188.'
mla: Sanz, M., et al. “Entanglement Classification with Matrix Product States.”
Scientific Reports, vol. 6, 30188, 2016, doi:10.1038/srep30188.
short: M. Sanz, I.L. Egusquiza, R.D. Candia, H. Saberi, L. Lamata, E. Solano, Scientific
Reports 6 (2016).
date_created: 2023-03-29T20:57:37Z
date_updated: 2023-04-01T20:46:41Z
department:
- _id: '293'
doi: 10.1038/srep30188
intvolume: ' 6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.nature.com/articles/srep30188
oa: '1'
publication: Scientific Reports
publication_status: published
status: public
title: Entanglement classification with matrix product states
type: journal_article
user_id: '49063'
volume: 6
year: '2016'
...
---
_id: '22942'
abstract:
- lang: eng
text: "A microscopic approach that is based on the multisubband semiconductor Bloch
equations formulated in the basis of a 14-band k⋅p model is employed to compute
the temporal dynamics of photocurrents in GaAs quantum wells following excitation
with femtosecond laser pulses. This approach provides a transparent description
of the interband, intersubband, and intraband excitations, fully includes all
resonant as well as off-resonant excitations, and treats the light-matter interaction
nonperturbatively. For linearly polarized excitations, the photocurrents contain
contributions from shift and rectification currents. We numerically compute and
analyze these currents generated by excitation with femtosecond laser pulses for
[110]- and [111]-oriented GaAs quantum wells. It is shown that the often employed
perturbative \r\nχ(2) approach breaks down for peak fields larger than about 10
kV/cm, and that nonperturbative effects lead to a reduction of the peak values
of the shift and rectification currents and to temporal oscillations that originate
from Rabi flopping. In particular, we find a complex oscillatory photon energy
dependence of the magnitudes of the shift and rectification currents. Our simulations
demonstrate that this dependence is the result of mixing between the heavy- and
light-hole valence bands. This is a surprising finding since the band mixing has
an even larger influence on the strength of the photocurrents than the absorption
coefficient. For [110]-oriented GaAs quantum wells, the calculated photon energy
dependence is compared to experimental results, and good agreement is obtained.
This validates our theoretical approach."
article_number: '085305'
author:
- first_name: Huynh Thanh
full_name: Duc, Huynh Thanh
last_name: Duc
- first_name: Reinold
full_name: Podzimski, Reinold
last_name: Podzimski
- first_name: Shekhar
full_name: Priyadarshi, Shekhar
last_name: Priyadarshi
- first_name: Mark
full_name: Bieler, Mark
last_name: Bieler
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: 'Duc HT, Podzimski R, Priyadarshi S, Bieler M, Meier T. Ultrafast shift and
rectification photocurrents in GaAs quantum wells: Excitation intensity dependence
and the importance of band mixing. Physical Review B. 2016;94(8). doi:10.1103/physrevb.94.085305'
apa: 'Duc, H. T., Podzimski, R., Priyadarshi, S., Bieler, M., & Meier, T. (2016).
Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation
intensity dependence and the importance of band mixing. Physical Review B,
94(8), Article 085305. https://doi.org/10.1103/physrevb.94.085305'
bibtex: '@article{Duc_Podzimski_Priyadarshi_Bieler_Meier_2016, title={Ultrafast
shift and rectification photocurrents in GaAs quantum wells: Excitation intensity
dependence and the importance of band mixing}, volume={94}, DOI={10.1103/physrevb.94.085305},
number={8085305}, journal={Physical Review B}, publisher={American Physical Society},
author={Duc, Huynh Thanh and Podzimski, Reinold and Priyadarshi, Shekhar and Bieler,
Mark and Meier, Torsten}, year={2016} }'
chicago: 'Duc, Huynh Thanh, Reinold Podzimski, Shekhar Priyadarshi, Mark Bieler,
and Torsten Meier. “Ultrafast Shift and Rectification Photocurrents in GaAs Quantum
Wells: Excitation Intensity Dependence and the Importance of Band Mixing.” Physical
Review B 94, no. 8 (2016). https://doi.org/10.1103/physrevb.94.085305.'
ieee: 'H. T. Duc, R. Podzimski, S. Priyadarshi, M. Bieler, and T. Meier, “Ultrafast
shift and rectification photocurrents in GaAs quantum wells: Excitation intensity
dependence and the importance of band mixing,” Physical Review B, vol.
94, no. 8, Art. no. 085305, 2016, doi: 10.1103/physrevb.94.085305.'
mla: 'Duc, Huynh Thanh, et al. “Ultrafast Shift and Rectification Photocurrents
in GaAs Quantum Wells: Excitation Intensity Dependence and the Importance of Band
Mixing.” Physical Review B, vol. 94, no. 8, 085305, American Physical Society,
2016, doi:10.1103/physrevb.94.085305.'
short: H.T. Duc, R. Podzimski, S. Priyadarshi, M. Bieler, T. Meier, Physical Review
B 94 (2016).
date_created: 2021-08-06T08:41:28Z
date_updated: 2023-04-16T21:18:16Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
doi: 10.1103/physrevb.94.085305
intvolume: ' 94'
issue: '8'
language:
- iso: eng
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
publisher: American Physical Society
status: public
title: 'Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation
intensity dependence and the importance of band mixing'
type: journal_article
user_id: '49063'
volume: 94
year: '2016'
...
---
_id: '13916'
abstract:
- lang: eng
text: Nonlinearity is the driving force for numerous important effects in nature
typically showing transitions between different regimes, regular, chaotic or catastrophic
behavior. Localized nonlinear modes have been the focus of intense research in
areas such as fluid and gas dynamics, photonics, atomic and solid state physics
etc. Due to the richness of the behavior of nonlinear systems and due to the severe
numerical demands of accurate three-dimensional (3D) numerical simulations presently
only little knowledge is available on the dynamics of complex nonlinear modes
in 3D. Here, we investigate the dynamics of 3D non-coaxial matter wave vortices
that are trapped in a parabolic potential and interact via a repulsive nonlinearity.
Our numerical simulations demonstrate the existence of an unexpected and fascinating
nonlinear regime that starts immediately when the nonlinearity is switched-on
and is characterized by a smooth dynamics representing torque-free precession
with nutations. The reported motion is proven to be robust regarding various effects
such as the number of particles, dissipation and trap deformations and thus should
be observable in suitably designed experiments. Since our theoretical approach,
i.e., coupled nonlinear Schrödinger equations, is quite generic, we expect that
the obtained novel dynamical behavior should also exist in other nonlinear systems.
article_number: '22758'
author:
- first_name: R.
full_name: Driben, R.
last_name: Driben
- first_name: V. V.
full_name: Konotop, V. V.
last_name: Konotop
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
citation:
ama: Driben R, Konotop VV, Meier T. Precession and nutation dynamics of nonlinearly
coupled non-coaxial three-dimensional matter wave vortices. Scientific Reports.
2016;6. doi:10.1038/srep22758
apa: Driben, R., Konotop, V. V., & Meier, T. (2016). Precession and nutation
dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices.
Scientific Reports, 6, Article 22758. https://doi.org/10.1038/srep22758
bibtex: '@article{Driben_Konotop_Meier_2016, title={Precession and nutation dynamics
of nonlinearly coupled non-coaxial three-dimensional matter wave vortices}, volume={6},
DOI={10.1038/srep22758}, number={22758},
journal={Scientific Reports}, author={Driben, R. and Konotop, V. V. and Meier,
Torsten}, year={2016} }'
chicago: Driben, R., V. V. Konotop, and Torsten Meier. “Precession and Nutation
Dynamics of Nonlinearly Coupled Non-Coaxial Three-Dimensional Matter Wave Vortices.”
Scientific Reports 6 (2016). https://doi.org/10.1038/srep22758.
ieee: 'R. Driben, V. V. Konotop, and T. Meier, “Precession and nutation dynamics
of nonlinearly coupled non-coaxial three-dimensional matter wave vortices,” Scientific
Reports, vol. 6, Art. no. 22758, 2016, doi: 10.1038/srep22758.'
mla: Driben, R., et al. “Precession and Nutation Dynamics of Nonlinearly Coupled
Non-Coaxial Three-Dimensional Matter Wave Vortices.” Scientific Reports,
vol. 6, 22758, 2016, doi:10.1038/srep22758.
short: R. Driben, V.V. Konotop, T. Meier, Scientific Reports 6 (2016).
date_created: 2019-10-18T08:30:23Z
date_updated: 2023-04-16T21:22:52Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '230'
doi: 10.1038/srep22758
funded_apc: '1'
intvolume: ' 6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.nature.com/articles/srep22758
oa: '1'
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
status: public
title: Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional
matter wave vortices
type: journal_article
user_id: '49063'
volume: 6
year: '2016'
...