---
_id: '45850'
abstract:
- lang: eng
text: Interference between single photons is key for many quantum optics experiments
and applications in quantum technologies, such as quantum communication or computation.
It is advantageous to operate the systems at telecommunication wavelengths and
to integrate the setups for these applications in order to improve stability,
compactness and scalability. A new promising material platform for integrated
quantum optics is lithium niobate on insulator (LNOI). Here, we realise Hong-Ou-Mandel
(HOM) interference between telecom photons from an engineered parametric down-conversion
source in an LNOI directional coupler. The coupler has been designed and fabricated
in house and provides close to perfect balanced beam splitting. We obtain a raw
HOM visibility of (93.5 ± 0.7) %, limited mainly by the source performance and
in good agreement with off-chip measurements. This lays the foundation for more
sophisticated quantum experiments in LNOI.
article_number: '23140'
author:
- first_name: Silia
full_name: Babel, Silia
id: '63231'
last_name: Babel
orcid: https://orcid.org/0000-0002-1568-2580
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Federico
full_name: Pegoraro, Federico
id: '88928'
last_name: Pegoraro
- first_name: Philip
full_name: Held, Philip
id: '68236'
last_name: Held
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Benjamin
full_name: Brecht, Benjamin
id: '27150'
last_name: Brecht
orcid: '0000-0003-4140-0556 '
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Babel S, Bollmers L, Massaro M, et al. Demonstration of Hong-Ou-Mandel interference
in an LNOI directional coupler. Optics Express. 2023;31(14). doi:10.1364/oe.484126
apa: Babel, S., Bollmers, L., Massaro, M., Luo, K. H., Stefszky, M., Pegoraro, F.,
Held, P., Herrmann, H., Eigner, C., Brecht, B., Padberg, L., & Silberhorn,
C. (2023). Demonstration of Hong-Ou-Mandel interference in an LNOI directional
coupler. Optics Express, 31(14), Article 23140. https://doi.org/10.1364/oe.484126
bibtex: '@article{Babel_Bollmers_Massaro_Luo_Stefszky_Pegoraro_Held_Herrmann_Eigner_Brecht_et
al._2023, title={Demonstration of Hong-Ou-Mandel interference in an LNOI directional
coupler}, volume={31}, DOI={10.1364/oe.484126},
number={1423140}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Babel, Silia and Bollmers, Laura and Massaro, Marcello and Luo, Kai Hong
and Stefszky, Michael and Pegoraro, Federico and Held, Philip and Herrmann, Harald
and Eigner, Christof and Brecht, Benjamin and et al.}, year={2023} }'
chicago: Babel, Silia, Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky,
Federico Pegoraro, Philip Held, et al. “Demonstration of Hong-Ou-Mandel Interference
in an LNOI Directional Coupler.” Optics Express 31, no. 14 (2023). https://doi.org/10.1364/oe.484126.
ieee: 'S. Babel et al., “Demonstration of Hong-Ou-Mandel interference in
an LNOI directional coupler,” Optics Express, vol. 31, no. 14, Art. no.
23140, 2023, doi: 10.1364/oe.484126.'
mla: Babel, Silia, et al. “Demonstration of Hong-Ou-Mandel Interference in an LNOI
Directional Coupler.” Optics Express, vol. 31, no. 14, 23140, Optica Publishing
Group, 2023, doi:10.1364/oe.484126.
short: S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P.
Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express
31 (2023).
date_created: 2023-07-03T14:08:36Z
date_updated: 2023-07-05T07:58:31Z
department:
- _id: '15'
- _id: '230'
- _id: '623'
- _id: '288'
doi: 10.1364/oe.484126
intvolume: ' 31'
issue: '14'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler
type: journal_article
user_id: '63231'
volume: 31
year: '2023'
...
---
_id: '26889'
author:
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Michael
full_name: Stefszky, Michael
id: '42777'
last_name: Stefszky
- first_name: Jan
full_name: Sperling, Jan
id: '75127'
last_name: Sperling
orcid: 0000-0002-5844-3205
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Alessandro
full_name: Ferreri, Alessandro
id: '65609'
last_name: Ferreri
- first_name: Polina
full_name: Sharapova, Polina
id: '60286'
last_name: Sharapova
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: 'Luo KH, Santandrea M, Stefszky M, et al. Quantum optical coherence: From linear
to nonlinear interferometers. Physical Review A. Published online 2021.
doi:10.1103/physreva.104.043707'
apa: 'Luo, K. H., Santandrea, M., Stefszky, M., Sperling, J., Massaro, M., Ferreri,
A., Sharapova, P., Herrmann, H., & Silberhorn, C. (2021). Quantum optical
coherence: From linear to nonlinear interferometers. Physical Review A.
https://doi.org/10.1103/physreva.104.043707'
bibtex: '@article{Luo_Santandrea_Stefszky_Sperling_Massaro_Ferreri_Sharapova_Herrmann_Silberhorn_2021,
title={Quantum optical coherence: From linear to nonlinear interferometers}, DOI={10.1103/physreva.104.043707},
journal={Physical Review A}, author={Luo, Kai Hong and Santandrea, Matteo and
Stefszky, Michael and Sperling, Jan and Massaro, Marcello and Ferreri, Alessandro
and Sharapova, Polina and Herrmann, Harald and Silberhorn, Christine}, year={2021}
}'
chicago: 'Luo, Kai Hong, Matteo Santandrea, Michael Stefszky, Jan Sperling, Marcello
Massaro, Alessandro Ferreri, Polina Sharapova, Harald Herrmann, and Christine
Silberhorn. “Quantum Optical Coherence: From Linear to Nonlinear Interferometers.”
Physical Review A, 2021. https://doi.org/10.1103/physreva.104.043707.'
ieee: 'K. H. Luo et al., “Quantum optical coherence: From linear to nonlinear
interferometers,” Physical Review A, 2021, doi: 10.1103/physreva.104.043707.'
mla: 'Luo, Kai Hong, et al. “Quantum Optical Coherence: From Linear to Nonlinear
Interferometers.” Physical Review A, 2021, doi:10.1103/physreva.104.043707.'
short: K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri,
P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).
date_created: 2021-10-26T12:42:16Z
date_updated: 2023-04-20T15:08:25Z
department:
- _id: '15'
- _id: '170'
- _id: '569'
- _id: '706'
- _id: '288'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1103/physreva.104.043707
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '72'
name: 'TRR 142 - C2: TRR 142 - Subproject C2'
publication: Physical Review A
publication_identifier:
issn:
- 2469-9926
- 2469-9934
publication_status: published
status: public
title: 'Quantum optical coherence: From linear to nonlinear interferometers'
type: journal_article
user_id: '16199'
year: '2021'
...
---
_id: '25038'
article_number: '053038'
author:
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Evan
full_name: Meyer-Scott, Evan
last_name: Meyer-Scott
- first_name: Nicola
full_name: Montaut, Nicola
last_name: Montaut
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Massaro M, Meyer-Scott E, Montaut N, Herrmann H, Silberhorn C. Improving SPDC
single-photon sources via extended heralding and feed-forward control. New
Journal of Physics. Published online 2019. doi:10.1088/1367-2630/ab1ec3
apa: Massaro, M., Meyer-Scott, E., Montaut, N., Herrmann, H., & Silberhorn,
C. (2019). Improving SPDC single-photon sources via extended heralding and feed-forward
control. New Journal of Physics, Article 053038. https://doi.org/10.1088/1367-2630/ab1ec3
bibtex: '@article{Massaro_Meyer-Scott_Montaut_Herrmann_Silberhorn_2019, title={Improving
SPDC single-photon sources via extended heralding and feed-forward control}, DOI={10.1088/1367-2630/ab1ec3},
number={053038}, journal={New Journal of Physics}, author={Massaro, Marcello and
Meyer-Scott, Evan and Montaut, Nicola and Herrmann, Harald and Silberhorn, Christine},
year={2019} }'
chicago: Massaro, Marcello, Evan Meyer-Scott, Nicola Montaut, Harald Herrmann, and
Christine Silberhorn. “Improving SPDC Single-Photon Sources via Extended Heralding
and Feed-Forward Control.” New Journal of Physics, 2019. https://doi.org/10.1088/1367-2630/ab1ec3.
ieee: 'M. Massaro, E. Meyer-Scott, N. Montaut, H. Herrmann, and C. Silberhorn, “Improving
SPDC single-photon sources via extended heralding and feed-forward control,” New
Journal of Physics, Art. no. 053038, 2019, doi: 10.1088/1367-2630/ab1ec3.'
mla: Massaro, Marcello, et al. “Improving SPDC Single-Photon Sources via Extended
Heralding and Feed-Forward Control.” New Journal of Physics, 053038, 2019,
doi:10.1088/1367-2630/ab1ec3.
short: M. Massaro, E. Meyer-Scott, N. Montaut, H. Herrmann, C. Silberhorn, New Journal
of Physics (2019).
date_created: 2021-09-24T11:42:27Z
date_updated: 2022-01-06T06:56:44Z
department:
- _id: '288'
doi: 10.1088/1367-2630/ab1ec3
language:
- iso: eng
publication: New Journal of Physics
publication_identifier:
issn:
- 1367-2630
publication_status: published
status: public
title: Improving SPDC single-photon sources via extended heralding and feed-forward
control
type: journal_article
user_id: '59545'
year: '2019'
...
---
_id: '26237'
article_number: '3215'
author:
- first_name: Kai-Hong
full_name: Luo, Kai-Hong
last_name: Luo
- first_name: Vahid
full_name: Ansari, Vahid
last_name: Ansari
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Raimund
full_name: Ricken, Raimund
last_name: Ricken
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Luo K-H, Ansari V, Massaro M, et al. Counter-propagating photon pair generation
in a nonlinear waveguide. Optics Express. Published online 2019. doi:10.1364/oe.378789
apa: Luo, K.-H., Ansari, V., Massaro, M., Santandrea, M., Eigner, C., Ricken, R.,
Herrmann, H., & Silberhorn, C. (2019). Counter-propagating photon pair generation
in a nonlinear waveguide. Optics Express, Article 3215. https://doi.org/10.1364/oe.378789
bibtex: '@article{Luo_Ansari_Massaro_Santandrea_Eigner_Ricken_Herrmann_Silberhorn_2019,
title={Counter-propagating photon pair generation in a nonlinear waveguide}, DOI={10.1364/oe.378789}, number={3215},
journal={Optics Express}, author={Luo, Kai-Hong and Ansari, Vahid and Massaro,
Marcello and Santandrea, Matteo and Eigner, Christof and Ricken, Raimund and Herrmann,
Harald and Silberhorn, Christine}, year={2019} }'
chicago: Luo, Kai-Hong, Vahid Ansari, Marcello Massaro, Matteo Santandrea, Christof
Eigner, Raimund Ricken, Harald Herrmann, and Christine Silberhorn. “Counter-Propagating
Photon Pair Generation in a Nonlinear Waveguide.” Optics Express, 2019.
https://doi.org/10.1364/oe.378789.
ieee: 'K.-H. Luo et al., “Counter-propagating photon pair generation in a
nonlinear waveguide,” Optics Express, Art. no. 3215, 2019, doi: 10.1364/oe.378789.'
mla: Luo, Kai-Hong, et al. “Counter-Propagating Photon Pair Generation in a Nonlinear
Waveguide.” Optics Express, 3215, 2019, doi:10.1364/oe.378789.
short: K.-H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H.
Herrmann, C. Silberhorn, Optics Express (2019).
date_created: 2021-10-15T09:39:24Z
date_updated: 2022-01-06T06:57:18Z
department:
- _id: '288'
doi: 10.1364/oe.378789
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Counter-propagating photon pair generation in a nonlinear waveguide
type: journal_article
user_id: '55095'
year: '2019'
...
---
_id: '12919'
author:
- first_name: Philip
full_name: Georgi, Philip
last_name: Georgi
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Basudeb
full_name: Sain, Basudeb
last_name: Sain
- first_name: Nicola
full_name: Montaut, Nicola
last_name: Montaut
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Thomas
full_name: Weiss, Thomas
last_name: Weiss
- first_name: Guixin
full_name: Li, Guixin
last_name: Li
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
citation:
ama: 'Georgi P, Massaro M, Luo KH, et al. Metasurface interferometry toward quantum
sensors. Light: Science & Applications. 2019;8:70. doi:10.1038/s41377-019-0182-6'
apa: 'Georgi, P., Massaro, M., Luo, K. H., Sain, B., Montaut, N., Herrmann, H.,
Weiss, T., Li, G., Silberhorn, C., & Zentgraf, T. (2019). Metasurface interferometry
toward quantum sensors. Light: Science & Applications, 8, 70.
https://doi.org/10.1038/s41377-019-0182-6'
bibtex: '@article{Georgi_Massaro_Luo_Sain_Montaut_Herrmann_Weiss_Li_Silberhorn_Zentgraf_2019,
title={Metasurface interferometry toward quantum sensors}, volume={8}, DOI={10.1038/s41377-019-0182-6},
journal={Light: Science & Applications}, author={Georgi, Philip and Massaro,
Marcello and Luo, Kai Hong and Sain, Basudeb and Montaut, Nicola and Herrmann,
Harald and Weiss, Thomas and Li, Guixin and Silberhorn, Christine and Zentgraf,
Thomas}, year={2019}, pages={70} }'
chicago: 'Georgi, Philip, Marcello Massaro, Kai Hong Luo, Basudeb Sain, Nicola Montaut,
Harald Herrmann, Thomas Weiss, Guixin Li, Christine Silberhorn, and Thomas Zentgraf.
“Metasurface Interferometry toward Quantum Sensors.” Light: Science & Applications
8 (2019): 70. https://doi.org/10.1038/s41377-019-0182-6.'
ieee: 'P. Georgi et al., “Metasurface interferometry toward quantum sensors,”
Light: Science & Applications, vol. 8, p. 70, 2019, doi: 10.1038/s41377-019-0182-6.'
mla: 'Georgi, Philip, et al. “Metasurface Interferometry toward Quantum Sensors.”
Light: Science & Applications, vol. 8, 2019, p. 70, doi:10.1038/s41377-019-0182-6.'
short: 'P. Georgi, M. Massaro, K.H. Luo, B. Sain, N. Montaut, H. Herrmann, T. Weiss,
G. Li, C. Silberhorn, T. Zentgraf, Light: Science & Applications 8 (2019)
70.'
date_created: 2019-08-14T06:59:23Z
date_updated: 2022-01-06T06:51:26Z
ddc:
- '530'
department:
- _id: '15'
- _id: '230'
- _id: '289'
doi: 10.1038/s41377-019-0182-6
file:
- access_level: closed
content_type: application/pdf
creator: zentgraf
date_created: 2019-08-14T07:11:36Z
date_updated: 2019-08-14T07:11:36Z
file_id: '12921'
file_name: LSA_Georgi_2019_Quantum metasurface.pdf
file_size: 748999
relation: main_file
success: 1
file_date_updated: 2019-08-14T07:11:36Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 8'
language:
- iso: eng
page: '70'
project:
- _id: '53'
name: TRR 142
- _id: '56'
name: TRR 142 - Project Area C
- _id: '72'
name: TRR 142 - Subproject C2
- _id: '75'
name: TRR 142 - Subproject C5
publication: 'Light: Science & Applications'
publication_identifier:
issn:
- 2047-7538
publication_status: published
status: public
title: Metasurface interferometry toward quantum sensors
type: journal_article
user_id: '30525'
volume: 8
year: '2019'
...
---
_id: '26052'
article_number: '3215'
author:
- first_name: Kai Hong
full_name: Luo, Kai Hong
id: '36389'
last_name: Luo
orcid: 0000-0003-1008-4976
- first_name: Vahid
full_name: Ansari, Vahid
last_name: Ansari
- first_name: Marcello
full_name: Massaro, Marcello
id: '59545'
last_name: Massaro
orcid: 0000-0002-2539-7652
- first_name: Matteo
full_name: Santandrea, Matteo
id: '55095'
last_name: Santandrea
orcid: 0000-0001-5718-358X
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Raimund
full_name: Ricken, Raimund
last_name: Ricken
- first_name: Harald
full_name: Herrmann, Harald
id: '216'
last_name: Herrmann
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
citation:
ama: Luo KH, Ansari V, Massaro M, et al. Counter-propagating photon pair generation
in a nonlinear waveguide. Optics Express. Published online 2019. doi:10.1364/oe.378789
apa: Luo, K. H., Ansari, V., Massaro, M., Santandrea, M., Eigner, C., Ricken, R.,
Herrmann, H., & Silberhorn, C. (2019). Counter-propagating photon pair generation
in a nonlinear waveguide. Optics Express, Article 3215. https://doi.org/10.1364/oe.378789
bibtex: '@article{Luo_Ansari_Massaro_Santandrea_Eigner_Ricken_Herrmann_Silberhorn_2019,
title={Counter-propagating photon pair generation in a nonlinear waveguide}, DOI={10.1364/oe.378789}, number={3215},
journal={Optics Express}, author={Luo, Kai Hong and Ansari, Vahid and Massaro,
Marcello and Santandrea, Matteo and Eigner, Christof and Ricken, Raimund and Herrmann,
Harald and Silberhorn, Christine}, year={2019} }'
chicago: Luo, Kai Hong, Vahid Ansari, Marcello Massaro, Matteo Santandrea, Christof
Eigner, Raimund Ricken, Harald Herrmann, and Christine Silberhorn. “Counter-Propagating
Photon Pair Generation in a Nonlinear Waveguide.” Optics Express, 2019.
https://doi.org/10.1364/oe.378789.
ieee: 'K. H. Luo et al., “Counter-propagating photon pair generation in a
nonlinear waveguide,” Optics Express, Art. no. 3215, 2019, doi: 10.1364/oe.378789.'
mla: Luo, Kai Hong, et al. “Counter-Propagating Photon Pair Generation in a Nonlinear
Waveguide.” Optics Express, 3215, 2019, doi:10.1364/oe.378789.
short: K.H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H.
Herrmann, C. Silberhorn, Optics Express (2019).
date_created: 2021-10-12T07:52:46Z
date_updated: 2023-02-01T10:13:15Z
doi: 10.1364/oe.378789
language:
- iso: eng
project:
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
status: public
title: Counter-propagating photon pair generation in a nonlinear waveguide
type: journal_article
user_id: '36389'
year: '2019'
...