Hong-Ou-Mandel Interference between Two Deterministic Collective Excitations in an Atomic Ensemble
| Autor: | Li, Jun, Zhou, Ming-Ti, Jing, Bo, Wang, Xu-Jie, Yang, Sheng-Jun, Jiang, Xiao, Mølmer, Klaus, Bao, Xiao-Hui, Pan, Jian-Wei |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 117, 180501 (2016) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.117.180501 |
| Popis: | We demonstrate deterministic generation of two distinct collective excitations in one atomic ensemble, and we realize the Hong-Ou-Mandel interference between them. Using Rydberg blockade we create single collective excitations in two different Zeeman levels, and we use stimulated Raman transitions to perform a beam-splitter operation between the excited atomic modes. By converting the atomic excitations into photons, the two-excitation interference is measured by photon coincidence detection with a visibility of 0.89(6). The Hong-Ou-Mandel interference witnesses an entangled NOON state of the collective atomic excitations, and we demonstrate its two times enhanced sensitivity to a magnetic field compared with a single excitation. Our work implements a minimal instance of Boson sampling and paves the way for further multi-mode and multi-excitation studies with collective excitations of atomic ensembles. Comment: 6 pages, 5 figures |
| Databáze: | arXiv |
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