A high-speed noise-free optical quantum memory
Optical quantum memories are devices that store and recall quantum light and are vital to the realisation of future photonic quantum networks. To date, much effort has been put into improving storage times and efficiencies of such devices to enable long-distance communications. However, less attenti...
Published in: | Physical Review A |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Physical Society
2018
|
Subjects: | |
Online Access: | https://doi.org/10.1103/PhysRevA.97.042316 https://ora.ox.ac.uk/objects/uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 |
id |
ftuloxford:oai:ora.ox.ac.uk:uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 |
---|---|
record_format |
openpolar |
spelling |
ftuloxford:oai:ora.ox.ac.uk:uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 2023-05-15T17:53:30+02:00 A high-speed noise-free optical quantum memory Kaczmarek, K Ledingham, P Brecht, B Thomas, S Thekkadath, G Lazo-Arjona, O Munns, J Poem, E Feizpour, A Saunders, D Nunn, J Walmsley, I 2018-04-05 https://doi.org/10.1103/PhysRevA.97.042316 https://ora.ox.ac.uk/objects/uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 unknown American Physical Society doi:10.1103/PhysRevA.97.042316 https://ora.ox.ac.uk/objects/uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 https://doi.org/10.1103/PhysRevA.97.042316 info:eu-repo/semantics/openAccess Journal article 2018 ftuloxford https://doi.org/10.1103/PhysRevA.97.042316 2022-06-28T20:12:37Z Optical quantum memories are devices that store and recall quantum light and are vital to the realisation of future photonic quantum networks. To date, much effort has been put into improving storage times and efficiencies of such devices to enable long-distance communications. However, less attention has been devoted to building quantum memories which add zero noise to the output. Even small additional noise can render the memory classical by destroying the fragile quantum signatures of the stored light. Therefore noise performance is a critical parameter for all quantum memories. Here we introduce an intrinsically noise-free quantum memory protocol based on two-photon off-resonant cascaded absorption (ORCA). We demonstrate successful storage of GHz-bandwidth heralded single photons in a warm atomic vapour with no added noise; confirmed by the unaltered photon number statistics upon recall. Our ORCA memory meets the stringent noise-requirements for quantum memories whilst combining high-speed and room-temperature operation with technical simplicity, and therefore is immediately applicable to low-latency quantum networks. Article in Journal/Newspaper Orca ORA - Oxford University Research Archive Physical Review A 97 4 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
unknown |
description |
Optical quantum memories are devices that store and recall quantum light and are vital to the realisation of future photonic quantum networks. To date, much effort has been put into improving storage times and efficiencies of such devices to enable long-distance communications. However, less attention has been devoted to building quantum memories which add zero noise to the output. Even small additional noise can render the memory classical by destroying the fragile quantum signatures of the stored light. Therefore noise performance is a critical parameter for all quantum memories. Here we introduce an intrinsically noise-free quantum memory protocol based on two-photon off-resonant cascaded absorption (ORCA). We demonstrate successful storage of GHz-bandwidth heralded single photons in a warm atomic vapour with no added noise; confirmed by the unaltered photon number statistics upon recall. Our ORCA memory meets the stringent noise-requirements for quantum memories whilst combining high-speed and room-temperature operation with technical simplicity, and therefore is immediately applicable to low-latency quantum networks. |
format |
Article in Journal/Newspaper |
author |
Kaczmarek, K Ledingham, P Brecht, B Thomas, S Thekkadath, G Lazo-Arjona, O Munns, J Poem, E Feizpour, A Saunders, D Nunn, J Walmsley, I |
spellingShingle |
Kaczmarek, K Ledingham, P Brecht, B Thomas, S Thekkadath, G Lazo-Arjona, O Munns, J Poem, E Feizpour, A Saunders, D Nunn, J Walmsley, I A high-speed noise-free optical quantum memory |
author_facet |
Kaczmarek, K Ledingham, P Brecht, B Thomas, S Thekkadath, G Lazo-Arjona, O Munns, J Poem, E Feizpour, A Saunders, D Nunn, J Walmsley, I |
author_sort |
Kaczmarek, K |
title |
A high-speed noise-free optical quantum memory |
title_short |
A high-speed noise-free optical quantum memory |
title_full |
A high-speed noise-free optical quantum memory |
title_fullStr |
A high-speed noise-free optical quantum memory |
title_full_unstemmed |
A high-speed noise-free optical quantum memory |
title_sort |
high-speed noise-free optical quantum memory |
publisher |
American Physical Society |
publishDate |
2018 |
url |
https://doi.org/10.1103/PhysRevA.97.042316 https://ora.ox.ac.uk/objects/uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 |
genre |
Orca |
genre_facet |
Orca |
op_relation |
doi:10.1103/PhysRevA.97.042316 https://ora.ox.ac.uk/objects/uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 https://doi.org/10.1103/PhysRevA.97.042316 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1103/PhysRevA.97.042316 |
container_title |
Physical Review A |
container_volume |
97 |
container_issue |
4 |
_version_ |
1766161207282106368 |