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Author  |
Shcherbatenko, M. L.; Elezov, M. S.; Goltsman, G. N.; Sych, D. V. | ||||
| Title | Sub-shot-noise-limited fiber-optic quantum receiver | Type | Journal Article | ||
| Year | 2020 | Publication | Phys. Rev. A | Abbreviated Journal | Phys. Rev. A |
| Volume | 101 | Issue | 3 | Pages | 032306 (1 to 5) |
| Keywords | SSPD mixer, SNSPD | ||||
| Abstract | We experimentally demonstrate a quantum receiver based on the Kennedy scheme for discrimination between two phase-modulated weak coherent states. The receiver is assembled entirely from standard fiber-optic elements and operates at a conventional telecom wavelength of 1.55 μm. The local oscillator and the signal are transmitted through different optical fibers, and the displaced signal is measured with a high-efficiency superconducting nanowire single-photon detector. We show the discrimination error rate is two times below that of a shot-noise-limited receiver with the same system detection efficiency. | ||||
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| ISSN | 2469-9926 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Serial | 1268 | |||
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