The University of Southampton
University of Southampton Institutional Repository

Optimal Coherent Filtering for Single Noisy Photons

Optimal Coherent Filtering for Single Noisy Photons
Optimal Coherent Filtering for Single Noisy Photons

We introduce a filter using a noise-free quantum buffer with large optical bandwidth that can both filter temporal-spectral modes as well as interconvert them and change their frequency. We theoretically show that such quantum buffers optimally filter out temporal-spectral noise, producing identical single photons from many distinguishable noisy single-photon sources with the minimum required reduction in brightness. We then experimentally demonstrate a noise-free quantum buffer in a warm atomic system that is well matched to quantum dots. Based on these experiments, simulations show that our buffer can outperform all intensity (incoherent) filtering schemes for increasing indistinguishability.

0031-9007
Gao, S.
29a7360f-d8cc-4f08-99f4-78262d628c46
Lazo-Arjona, O.
1a94c137-0b14-49da-9981-04d75fd786df
Brecht, B.
cd5bde09-42fc-4370-874f-e306d05505ca
Kaczmarek, K. T.
1658d0d5-06c7-4282-aea9-b2dbab601a12
Thomas, S. E.
c8cbf505-dbe4-46cb-9c89-8d8ddc52561a
Nunn, J.
2dfa3d2a-3580-456b-962c-0d21bed9cca9
Ledingham, P. M.
8db45fde-00d8-421a-93d6-7f18ac835c28
Saunders, D. J.
8d590c4e-2ea0-439c-bf42-03192c9eb60e
Walmsley, I. A.
a9b02ef9-f5d9-473f-ac01-bbbe06d28170
Gao, S.
29a7360f-d8cc-4f08-99f4-78262d628c46
Lazo-Arjona, O.
1a94c137-0b14-49da-9981-04d75fd786df
Brecht, B.
cd5bde09-42fc-4370-874f-e306d05505ca
Kaczmarek, K. T.
1658d0d5-06c7-4282-aea9-b2dbab601a12
Thomas, S. E.
c8cbf505-dbe4-46cb-9c89-8d8ddc52561a
Nunn, J.
2dfa3d2a-3580-456b-962c-0d21bed9cca9
Ledingham, P. M.
8db45fde-00d8-421a-93d6-7f18ac835c28
Saunders, D. J.
8d590c4e-2ea0-439c-bf42-03192c9eb60e
Walmsley, I. A.
a9b02ef9-f5d9-473f-ac01-bbbe06d28170

Gao, S., Lazo-Arjona, O., Brecht, B., Kaczmarek, K. T., Thomas, S. E., Nunn, J., Ledingham, P. M., Saunders, D. J. and Walmsley, I. A. (2019) Optimal Coherent Filtering for Single Noisy Photons. Physical Review Letters, 123 (21), [213604]. (doi:10.1103/PhysRevLett.123.213604).

Record type: Article

Abstract

We introduce a filter using a noise-free quantum buffer with large optical bandwidth that can both filter temporal-spectral modes as well as interconvert them and change their frequency. We theoretically show that such quantum buffers optimally filter out temporal-spectral noise, producing identical single photons from many distinguishable noisy single-photon sources with the minimum required reduction in brightness. We then experimentally demonstrate a noise-free quantum buffer in a warm atomic system that is well matched to quantum dots. Based on these experiments, simulations show that our buffer can outperform all intensity (incoherent) filtering schemes for increasing indistinguishability.

This record has no associated files available for download.

More information

Published date: 20 November 2019

Identifiers

Local EPrints ID: 455466
URI: http://eprints.soton.ac.uk/id/eprint/455466
ISSN: 0031-9007
PURE UUID: 841ad692-c43b-4179-920f-f46eff5ebb80
ORCID for P. M. Ledingham: ORCID iD orcid.org/0000-0002-9804-6132

Catalogue record

Date deposited: 22 Mar 2022 17:40
Last modified: 06 Jun 2024 02:08

Export record

Altmetrics

Contributors

Author: S. Gao
Author: O. Lazo-Arjona
Author: B. Brecht
Author: K. T. Kaczmarek
Author: S. E. Thomas
Author: J. Nunn
Author: P. M. Ledingham ORCID iD
Author: D. J. Saunders
Author: I. A. Walmsley

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×