| Journal: | Revista mexicana de física |
| Database: | PERIÓDICA |
| System number: | 000460767 |
| ISSN: | 0035-001X |
| Authors: | Arias Téllez, N1 Angeles Aguillón, I.F1 Martínez Cara, D1 Martínez Vallejo, A1 Villegas Aguilar, L.Y1 Mendoza López, L.A1 Torres, Y. M1 Gutiérrez Arenas, R.A1 Jáuregui, R1 Sahagún Sánchez, D1 Pérez Castillo, I2 Ceré, A3 |
| Institutions: | 1Universidad Nacional Autónoma de México, Instituto de Física, Ciudad de México. México 2Universidad Autónoma Metropolitana, Departamento de Física, Iztapalapa, Ciudad de México. México 3Center for Quantum Technologies, Singapur. Singapur |
| Year: | 2022 |
| Season: | May-Jun |
| Volumen: | 68 |
| Number: | 3 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, teórico |
| English abstract | We present our recently-built experimental setup designed to generate near-infrared and narrow-band correlated photon pairs by inducing four-wave mixing in a cold gas of 87Rb atoms confined in a magneto-optical trap. The experimental setup and its automation and control approach are described in detail. A characterization of the optical density of the atomic ensemble as well as the basic statistical measurements of the generated light are reported. The non-classical nature of the photon pairs is confirmed by observing a violation of Cauchy-Schwarz inequality by a factor of 5.6 × 10-5 in a Hanbury Brown - Twiss interferometer. A 1/e coherence time for the heralded, idler photons of 44 ± 0.1 ns is estimated from our observations. We are able to achieve a value of 104 s-1 pair-detection-rate, which results in a spectral brightness of 280 (MHz s)-1. The combination of high brightness and narrow-band spectrum makes this photon-pair source a viable tool in fundamental studies of quantum states and opens the door to use them in quantum technologies |
| Disciplines: | Física y astronomía |
| Keyword: | Optica, Bifotones, Redes cuánticas, Mezcla de cuatro ondas, Atomos enfriados, Información cuántica |
| Keyword: | Optics, Bi-photons, Quantum networks, Four wave mixing, Cold atoms, Quantum information |
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