Complete temporal characterization of a single photon
| Autor: | Qin, Zhongzhong, Prasad, Adarsh S., Brannan, Travis, MacRae, Andrew, Lezama, A., Lvovsky, A. I. |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Light: Sci. Appl. 4, e298 (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/lsa.2015.71 |
| Popis: | Precise information about the temporal mode of optical states is crucial for optimizing their interaction efficiency between themselves and/or with matter in various quantum communication devices. Here we propose and experimentally demonstrate a method of determining both the real and imaginary components of a single photon's temporal density matrix by measuring the autocorrelation function of the photocurrent from a balanced homodyne detector at multiple local oscillator frequencies. We test our method on single photons heralded from biphotons generated via four-wave mixing in an atomic vapor and obtain excellent agreement with theoretical predictions for several settings. Comment: 8 pages, 6 figures. Accepted by Light: Science & Applications. In press |
| Databáze: | arXiv |
| Externí odkaz: |
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