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...
| Egile Nagusiak: | , , , , , , , , , , , |
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| Formatua: | Journal article |
| Argitaratua: |
American Physical Society
2018
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| _version_ | 1826273129091039232 |
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| 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 |
| 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 |
| collection | OXFORD |
| 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. |
| first_indexed | 2024-03-06T22:23:29Z |
| format | Journal article |
| id | oxford-uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:23:29Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:55d8c9b8-cada-40d5-afce-0bd2cc9af6112022-03-26T16:46:51ZA high-speed noise-free optical quantum memoryJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:55d8c9b8-cada-40d5-afce-0bd2cc9af611Symplectic Elements at OxfordAmerican Physical Society2018Kaczmarek, KLedingham, PBrecht, BThomas, SThekkadath, GLazo-Arjona, OMunns, JPoem, EFeizpour, ASaunders, DNunn, JWalmsley, IOptical 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. |
| 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 |
| title | 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_short | A high-speed noise-free optical quantum memory |
| title_sort | high speed noise free optical quantum memory |
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