Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory
The generation of large multiphoton quantum states - for applications in computing, metrology and simulation - requires a network of high-efficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797081691522596864 |
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| author | Sprague, MR England, D Abdolvand, A Nunn, J Jin, X Kolthammer, W Barbieri, M Rigal, B Michelberger, P Champion, T Russell, P Walmsley, I |
| author_facet | Sprague, MR England, D Abdolvand, A Nunn, J Jin, X Kolthammer, W Barbieri, M Rigal, B Michelberger, P Champion, T Russell, P Walmsley, I |
| author_sort | Sprague, MR |
| collection | OXFORD |
| description | The generation of large multiphoton quantum states - for applications in computing, metrology and simulation - requires a network of high-efficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal: strong light-matter coupling at low powers, simplified alignment and compatibility with existing photonic architectures. Here, we introduce a large-core kagome-structured hollow-core fibre as a suitable platform for an integrated fibre-based quantum memory with a warm atomic vapour. We demonstrate, for the first time, efficient optical pumping in such a system, where 90 ± 1% of atoms are prepared in the ground state. We measure high optical depths (3 × 104) and narrow homogeneous linewidths (6 ± 2 MHz) that do not exhibit significant transit-time broadening, showing that we can prepare a Λ-level system in a pure state. Our results establish that kagome fibres are suitable for implementing a broadband, room-temperature quantum memory, as well as a range of nonlinear optical effects. © IOP Publishing and Deutsche Physikalische Gesellschaft. |
| first_indexed | 2024-03-07T01:17:31Z |
| format | Journal article |
| id | oxford-uuid:8f33d0a6-1610-4f1a-b5e9-8edc764a73a7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:17:31Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:8f33d0a6-1610-4f1a-b5e9-8edc764a73a72022-03-26T23:02:48ZEfficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memoryJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8f33d0a6-1610-4f1a-b5e9-8edc764a73a7EnglishSymplectic Elements at Oxford2013Sprague, MREngland, DAbdolvand, ANunn, JJin, XKolthammer, WBarbieri, MRigal, BMichelberger, PChampion, TRussell, PWalmsley, IThe generation of large multiphoton quantum states - for applications in computing, metrology and simulation - requires a network of high-efficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal: strong light-matter coupling at low powers, simplified alignment and compatibility with existing photonic architectures. Here, we introduce a large-core kagome-structured hollow-core fibre as a suitable platform for an integrated fibre-based quantum memory with a warm atomic vapour. We demonstrate, for the first time, efficient optical pumping in such a system, where 90 ± 1% of atoms are prepared in the ground state. We measure high optical depths (3 × 104) and narrow homogeneous linewidths (6 ± 2 MHz) that do not exhibit significant transit-time broadening, showing that we can prepare a Λ-level system in a pure state. Our results establish that kagome fibres are suitable for implementing a broadband, room-temperature quantum memory, as well as a range of nonlinear optical effects. © IOP Publishing and Deutsche Physikalische Gesellschaft. |
| spellingShingle | Sprague, MR England, D Abdolvand, A Nunn, J Jin, X Kolthammer, W Barbieri, M Rigal, B Michelberger, P Champion, T Russell, P Walmsley, I Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory |
| title | Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory |
| title_full | Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory |
| title_fullStr | Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory |
| title_full_unstemmed | Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory |
| title_short | Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory |
| title_sort | efficient optical pumping and high optical depth in a hollow core photonic crystal fibre for a broadband quantum memory |
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