Title | Tunable Quantum Beat of Single Photons Enabled by Nonlinear Nanophotonics |
Publication Type | Journal Article |
Year of Publication | 2019 |
Authors | Q. Li, A. Singh, X. Lu, J. Lawall, V. Verma, R. Mirin, S. Woo Nam, and K. Srinivasan |
Journal | Phys. Rev. Appl. |
Volume | 12 |
Pagination | 054054 |
Date Published | NOV 22 |
Type of Article | Article |
ISSN | 2331-7019 |
Abstract | We demonstrate the tunable quantum beat of single photons through the co-development of core nonlinear nanophotonic technologies for frequency-domain manipulation of quantum states in a common physical platform. Spontaneous four-wave mixing in a nonlinear resonator is used to produce nondegenerate, quantum-correlated photon pairs. One photon from each pair is then frequency shifted, without degradation of photon statistics, using four-wave-mixing Bragg scattering in a second nonlinear resonator. Fine tuning of the applied frequency shift enables tunable quantum interference of the two photons as they are impinged on a beam splitter, with an oscillating signature that depends on their frequency difference. Our work showcases the potential of nonlinear nanophotonic devices as a valuable resource for photonic quantum-information science. |
DOI | 10.1103/PhysRevApplied.12.054054 |