Quantum enhanced multiple phase estimation.
We study the simultaneous estimation of multiple phases as a discretized model for the imaging of a phase object. We identify quantum probe states that provide an enhancement compared to the best quantum scheme for the estimation of each individual phase separately as well as improvements over class...
| প্রধান লেখক: | , , , |
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| বিন্যাস: | Journal article |
| ভাষা: | English |
| প্রকাশিত: |
2013
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| _version_ | 1826290391638343680 |
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| author | Humphreys, P Barbieri, M Datta, A Walmsley, I |
| author_facet | Humphreys, P Barbieri, M Datta, A Walmsley, I |
| author_sort | Humphreys, P |
| collection | OXFORD |
| description | We study the simultaneous estimation of multiple phases as a discretized model for the imaging of a phase object. We identify quantum probe states that provide an enhancement compared to the best quantum scheme for the estimation of each individual phase separately as well as improvements over classical strategies. Our strategy provides an advantage in the variance of the estimation over individual quantum estimation schemes that scales as O(d), where d is the number of phases. Finally, we study the attainability of this limit using realistic probes and photon-number-resolving detectors. This is a problem in which an intrinsic advantage is derived from the estimation of multiple parameters simultaneously. |
| first_indexed | 2024-03-07T02:43:29Z |
| format | Journal article |
| id | oxford-uuid:ab3d3cee-e811-434b-a167-494449b5a6dc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:43:29Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:ab3d3cee-e811-434b-a167-494449b5a6dc2022-03-27T03:20:40ZQuantum enhanced multiple phase estimation.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ab3d3cee-e811-434b-a167-494449b5a6dcEnglishSymplectic Elements at Oxford2013Humphreys, PBarbieri, MDatta, AWalmsley, IWe study the simultaneous estimation of multiple phases as a discretized model for the imaging of a phase object. We identify quantum probe states that provide an enhancement compared to the best quantum scheme for the estimation of each individual phase separately as well as improvements over classical strategies. Our strategy provides an advantage in the variance of the estimation over individual quantum estimation schemes that scales as O(d), where d is the number of phases. Finally, we study the attainability of this limit using realistic probes and photon-number-resolving detectors. This is a problem in which an intrinsic advantage is derived from the estimation of multiple parameters simultaneously. |
| spellingShingle | Humphreys, P Barbieri, M Datta, A Walmsley, I Quantum enhanced multiple phase estimation. |
| title | Quantum enhanced multiple phase estimation. |
| title_full | Quantum enhanced multiple phase estimation. |
| title_fullStr | Quantum enhanced multiple phase estimation. |
| title_full_unstemmed | Quantum enhanced multiple phase estimation. |
| title_short | Quantum enhanced multiple phase estimation. |
| title_sort | quantum enhanced multiple phase estimation |
| work_keys_str_mv | AT humphreysp quantumenhancedmultiplephaseestimation AT barbierim quantumenhancedmultiplephaseestimation AT dattaa quantumenhancedmultiplephaseestimation AT walmsleyi quantumenhancedmultiplephaseestimation |