Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications

Year: 2014

Authors: Bruno N., Martin A., Thewn R.T.

Autors Affiliation: Univ Geneva, Grp Appl Phys, CH-1211 Geneva 4, Switzerland.

Abstract: Quantum optics experiments frequently involve interfering single photons and coherent states. In the case of multi-photon experiments this requires all photons to be frequency degenerate. We report a simple and practical approach to generate coherent states that can be readily tuned to any wavelength required, for example by non-degenerate photon pair creation. We demonstrate this by performing a two-photon (Hong-Ou-Mandel) interference experiment between a coherent state and a pure heralded single photon source. Neither interfering photon passes through a spectral filter, the coherent state is constrained by the pump and seed lasers and the heralded photon exploits non-local filtering. We expect that such an approach can find a wide range of applications in photonic based quantum information science. (C) 2014 Elsevier B.V. All rights reserved.

Journal/Review: OPTICS COMMUNICATIONS

Volume: 327      Pages from: 17  to: 21

More Information: We thank B. Sanguinetti, P. Sekatski and H. Zbinden for stimulating discussions, This work was supported in part by the EU project SIQS and the Swiss SNSF – project CR23I2 127118.
KeyWords: Quantum communication; Nonlinear optics; Quantum optics
DOI: 10.1016/j.optcom.2014.02.025

Citations: 12
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