Optimal Coherent Filtering for Single Noisy Photons
| Autor: | Gao, S., Lazo-Arjona, O., Brecht, B., Kaczmarek, K. T., Thomas, S. E., Nunn, J., Ledingham, P. M., Saunders, D. J., Walmsley, I. A. |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 123, 213604 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.123.213604 |
| Popis: | We introduce a filter using a noise-free quantum buffer with large optical bandwidth that can both filter temporal-spectral modes, as well as inter-convert them and change their frequency. We show that such quantum buffers optimally filter out temporal-spectral noise; producing identical single-photons from many distinguishable noisy single-photon sources with the minimum required reduction in brightness. We then experimentally demonstrate a noise-free quantum buffer in a warm atomic system that is well matched to quantum dots and can outperform all intensity (incoherent) filtering schemes for increasing indistinguishability. Comment: 5 pages, 4 Figures |
| Databáze: | arXiv |
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