Theory of noise suppression in Λ-type quantum memories by means of a cavity
Quantum memories, capable of storing single photons or other quantum states of light, to be retrieved on demand, offer a route to large-scale quantum information processing with light. A promising class of memories is based on far-off-resonant Raman absorption in ensembles of Λ-type atoms. However,...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Published: |
American Physical Society
2018
|
| _version_ | 1826294306388836352 |
|---|---|
| author | Nunn, JAS Munns, JHD Thomas, SE Kaczmarek, KT Qiu, C Feizpour, A Poem, E Brecht, B Saunders, DJ Ledingham, PM Reddy, DV Raymer, MG Walmsley, IA |
| author_facet | Nunn, JAS Munns, JHD Thomas, SE Kaczmarek, KT Qiu, C Feizpour, A Poem, E Brecht, B Saunders, DJ Ledingham, PM Reddy, DV Raymer, MG Walmsley, IA |
| author_sort | Nunn, JAS |
| collection | OXFORD |
| description | Quantum memories, capable of storing single photons or other quantum states of light, to be retrieved on demand, offer a route to large-scale quantum information processing with light. A promising class of memories is based on far-off-resonant Raman absorption in ensembles of Λ-type atoms. However, at room temperature these systems exhibit unwanted four-wave mixing, which is prohibitive for applications at the single-photon level. Here, we show how this noise can be suppressed by placing the storage medium inside a moderate-finesse optical cavity, thereby removing the main roadblock hindering this approach to quantum memory. |
| first_indexed | 2024-03-07T03:43:36Z |
| format | Journal article |
| id | oxford-uuid:beb483c1-e42d-47a1-9426-f1a8a6ad1f26 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:43:36Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:beb483c1-e42d-47a1-9426-f1a8a6ad1f262022-03-27T05:41:53ZTheory of noise suppression in Λ-type quantum memories by means of a cavityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:beb483c1-e42d-47a1-9426-f1a8a6ad1f26Symplectic Elements at OxfordAmerican Physical Society2018Nunn, JASMunns, JHDThomas, SEKaczmarek, KTQiu, CFeizpour, APoem, EBrecht, BSaunders, DJLedingham, PMReddy, DVRaymer, MGWalmsley, IAQuantum memories, capable of storing single photons or other quantum states of light, to be retrieved on demand, offer a route to large-scale quantum information processing with light. A promising class of memories is based on far-off-resonant Raman absorption in ensembles of Λ-type atoms. However, at room temperature these systems exhibit unwanted four-wave mixing, which is prohibitive for applications at the single-photon level. Here, we show how this noise can be suppressed by placing the storage medium inside a moderate-finesse optical cavity, thereby removing the main roadblock hindering this approach to quantum memory. |
| spellingShingle | Nunn, JAS Munns, JHD Thomas, SE Kaczmarek, KT Qiu, C Feizpour, A Poem, E Brecht, B Saunders, DJ Ledingham, PM Reddy, DV Raymer, MG Walmsley, IA Theory of noise suppression in Λ-type quantum memories by means of a cavity |
| title | Theory of noise suppression in Λ-type quantum memories by means of a cavity |
| title_full | Theory of noise suppression in Λ-type quantum memories by means of a cavity |
| title_fullStr | Theory of noise suppression in Λ-type quantum memories by means of a cavity |
| title_full_unstemmed | Theory of noise suppression in Λ-type quantum memories by means of a cavity |
| title_short | Theory of noise suppression in Λ-type quantum memories by means of a cavity |
| title_sort | theory of noise suppression in λ type quantum memories by means of a cavity |
| work_keys_str_mv | AT nunnjas theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT munnsjhd theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT thomasse theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT kaczmarekkt theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT qiuc theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT feizpoura theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT poeme theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT brechtb theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT saundersdj theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT ledinghampm theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT reddydv theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT raymermg theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity AT walmsleyia theoryofnoisesuppressioninltypequantummemoriesbymeansofacavity |