---
_id: '4276'
abstract:
- lang: eng
  text: "We analyse an InAs/GaAs-based electric field tunable single quantum dot diode
    with a thin tunnelling barrier between a\r\nburied n þ -back contact and a quantum
    dot layer. In voltage- dependent photoluminescence measurements, we observe rich
    signatures from spatially direct and indirect transitions from the wetting layer
    and from a single quantum dot. By analysing the Stark effect, we show that the
    indirect transitions result from a recombination between confined holes in the
    wetting or quantum dot layer with electrons from the edge of the Fermi sea in
    the back contact. Using a 17 nm tunnel barrier which provides comparably weak
    tunnel coupling allowed us to observe clear signatures of direct and corresponding
    indirect lines for a series of neutral and positively charged quantum dot states."
article_type: original
author:
- first_name: Ashish K.
  full_name: Rai, Ashish K.
  last_name: Rai
- first_name: Simon
  full_name: Gordon, Simon
  last_name: Gordon
- first_name: Arne
  full_name: Ludwig, Arne
  last_name: Ludwig
- first_name: Andreas D.
  full_name: Wieck, Andreas D.
  last_name: Wieck
- first_name: Artur
  full_name: Zrenner, Artur
  id: '606'
  last_name: Zrenner
  orcid: 0000-0002-5190-0944
- first_name: Dirk
  full_name: Reuter, Dirk
  id: '37763'
  last_name: Reuter
citation:
  ama: Rai AK, Gordon S, Ludwig A, Wieck AD, Zrenner A, Reuter D. Spatially indirect
    transitions in electric field tunable quantum dot diodes. <i>physica status solidi
    (b)</i>. 2015;253(3):437-441. doi:<a href="https://doi.org/10.1002/pssb.201552591">10.1002/pssb.201552591</a>
  apa: Rai, A. K., Gordon, S., Ludwig, A., Wieck, A. D., Zrenner, A., &#38; Reuter,
    D. (2015). Spatially indirect transitions in electric field tunable quantum dot
    diodes. <i>Physica Status Solidi (B)</i>, <i>253</i>(3), 437–441. <a href="https://doi.org/10.1002/pssb.201552591">https://doi.org/10.1002/pssb.201552591</a>
  bibtex: '@article{Rai_Gordon_Ludwig_Wieck_Zrenner_Reuter_2015, title={Spatially
    indirect transitions in electric field tunable quantum dot diodes}, volume={253},
    DOI={<a href="https://doi.org/10.1002/pssb.201552591">10.1002/pssb.201552591</a>},
    number={3}, journal={physica status solidi (b)}, publisher={Wiley}, author={Rai,
    Ashish K. and Gordon, Simon and Ludwig, Arne and Wieck, Andreas D. and Zrenner,
    Artur and Reuter, Dirk}, year={2015}, pages={437–441} }'
  chicago: 'Rai, Ashish K., Simon Gordon, Arne Ludwig, Andreas D. Wieck, Artur Zrenner,
    and Dirk Reuter. “Spatially Indirect Transitions in Electric Field Tunable Quantum
    Dot Diodes.” <i>Physica Status Solidi (B)</i> 253, no. 3 (2015): 437–41. <a href="https://doi.org/10.1002/pssb.201552591">https://doi.org/10.1002/pssb.201552591</a>.'
  ieee: A. K. Rai, S. Gordon, A. Ludwig, A. D. Wieck, A. Zrenner, and D. Reuter, “Spatially
    indirect transitions in electric field tunable quantum dot diodes,” <i>physica
    status solidi (b)</i>, vol. 253, no. 3, pp. 437–441, 2015.
  mla: Rai, Ashish K., et al. “Spatially Indirect Transitions in Electric Field Tunable
    Quantum Dot Diodes.” <i>Physica Status Solidi (B)</i>, vol. 253, no. 3, Wiley,
    2015, pp. 437–41, doi:<a href="https://doi.org/10.1002/pssb.201552591">10.1002/pssb.201552591</a>.
  short: A.K. Rai, S. Gordon, A. Ludwig, A.D. Wieck, A. Zrenner, D. Reuter, Physica
    Status Solidi (B) 253 (2015) 437–441.
date_created: 2018-08-29T10:03:56Z
date_updated: 2022-01-06T07:00:46Z
department:
- _id: '15'
- _id: '230'
- _id: '35'
doi: 10.1002/pssb.201552591
intvolume: '       253'
issue: '3'
keyword:
- excitons
- GaAs
- InAs
- quantum dots
- spatially indirect transitions
- Stark shift
language:
- iso: eng
page: 437-441
publication: physica status solidi (b)
publication_identifier:
  issn:
  - 0370-1972
publication_status: published
publisher: Wiley
status: public
title: Spatially indirect transitions in electric field tunable quantum dot diodes
type: journal_article
user_id: '42514'
volume: 253
year: '2015'
...
---
_id: '4381'
abstract:
- lang: eng
  text: Coherent physics and applications of exciton qubits in electric fi eld tunable
    quantum dot structures are our focus. Excitations with picosecond (ps) laser pulses
    result in qubit rotations. Using state projection by tunnelling the readout can
    be performed in quantitative way. As a function of electric fi eld induced detuning
    Ramsey fringes of a single exciton qubit can be observed and controlled for double
    pulse excitation. Therefore it is possible to demonstrate voltage controlled qubit
    manipulations within a wide range of pulse delays. Using fast electric signals,
    phase-locked to ps-laser pulses, the coherent control of an exciton qubit can
    be obtained by electric interaction. Such voltage controlled qubit manipulations
    seem to be essential for new types of optoelectronic quantum gates and novel applications
    in the fi eld of coherent optoelectronics.
author:
- first_name: Steffen
  full_name: Michaelis de Vasconcellos, Steffen
  last_name: Michaelis de Vasconcellos
- first_name: Simon
  full_name: Gordon, Simon
  last_name: Gordon
- first_name: Dirk
  full_name: Mantei, Dirk
  last_name: Mantei
- first_name: Yves Alexander
  full_name: Leier, Yves Alexander
  last_name: Leier
- first_name: M.
  full_name: Al-Hmoud, M.
  last_name: Al-Hmoud
- first_name: Wadim
  full_name: Quiring, Wadim
  last_name: Quiring
- first_name: Artur
  full_name: Zrenner, Artur
  id: '606'
  last_name: Zrenner
  orcid: 0000-0002-5190-0944
citation:
  ama: 'Michaelis de Vasconcellos S, Gordon S, Mantei D, et al. Coherent optoelectronics
    with quantum dots. In: Jahnke F, ed. <i>QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES</i>.
    Woodhead Publishing; 2012:528-559.'
  apa: Michaelis de Vasconcellos, S., Gordon, S., Mantei, D., Leier, Y. A., Al-Hmoud,
    M., Quiring, W., &#38; Zrenner, A. (2012). Coherent optoelectronics with quantum
    dots. In F. Jahnke (Ed.), <i>QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES</i>
    (pp. 528–559). Woodhead Publishing.
  bibtex: '@inbook{Michaelis de Vasconcellos_Gordon_Mantei_Leier_Al-Hmoud_Quiring_Zrenner_2012,
    title={Coherent optoelectronics with quantum dots}, booktitle={QUANTUM OPTICS
    WITH SEMICONDUCTOR NANOSTRUCTURES}, publisher={Woodhead Publishing}, author={Michaelis
    de Vasconcellos, Steffen and Gordon, Simon and Mantei, Dirk and Leier, Yves Alexander
    and Al-Hmoud, M. and Quiring, Wadim and Zrenner, Artur}, editor={Jahnke, FrankEditor},
    year={2012}, pages={528–559} }'
  chicago: Michaelis de Vasconcellos, Steffen, Simon Gordon, Dirk Mantei, Yves Alexander
    Leier, M. Al-Hmoud, Wadim Quiring, and Artur Zrenner. “Coherent Optoelectronics
    with Quantum Dots.” In <i>QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES</i>,
    edited by Frank Jahnke, 528–59. Woodhead Publishing, 2012.
  ieee: S. Michaelis de Vasconcellos <i>et al.</i>, “Coherent optoelectronics with
    quantum dots,” in <i>QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES</i>, F.
    Jahnke, Ed. Woodhead Publishing, 2012, pp. 528–559.
  mla: Michaelis de Vasconcellos, Steffen, et al. “Coherent Optoelectronics with Quantum
    Dots.” <i>QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES</i>, edited by Frank
    Jahnke, Woodhead Publishing, 2012, pp. 528–59.
  short: 'S. Michaelis de Vasconcellos, S. Gordon, D. Mantei, Y.A. Leier, M. Al-Hmoud,
    W. Quiring, A. Zrenner, in: F. Jahnke (Ed.), QUANTUM OPTICS WITH SEMICONDUCTOR
    NANOSTRUCTURES, Woodhead Publishing, 2012, pp. 528–559.'
date_created: 2018-09-13T06:43:40Z
date_updated: 2022-01-06T07:01:00Z
department:
- _id: '15'
- _id: '230'
- _id: '35'
editor:
- first_name: Frank
  full_name: Jahnke, Frank
  last_name: Jahnke
keyword:
- excitons
- quantum bits
- coherent manipulation
- Ramsey interference
- quantum gate
language:
- iso: eng
page: 528-559
publication: QUANTUM OPTICS WITH SEMICONDUCTOR NANOSTRUCTURES
publication_identifier:
  isbn:
  - 9780857092328 0857092324
publication_status: published
publisher: Woodhead Publishing
status: public
title: Coherent optoelectronics with quantum dots
type: book_chapter
user_id: '49428'
year: '2012'
...