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Villar AS, Martinelli M, Fabre C, et al. Direct production of tripartite pump-signal-idler entanglement in the above-threshold optical parametric oscillator. Phys Rev Lett. 2006;97(14):140504doi: 10.1103/PhysRevLett.97.140504.
Villar, A. S., Martinelli, M., Fabre, C., & Nussenzveig, P. (2006). Direct production of tripartite pump-signal-idler entanglement in the above-threshold optical parametric oscillator. Physical review letters, 97(14), 140504. https://doi.org/10.1103/PhysRevLett.97.140504
Villar, A S, et al. "Direct production of tripartite pump-signal-idler entanglement in the above-threshold optical parametric oscillator." Physical review letters vol. 97,14 (2006): 140504. doi: https://doi.org/10.1103/PhysRevLett.97.140504
Villar AS, Martinelli M, Fabre C, Nussenzveig P. Direct production of tripartite pump-signal-idler entanglement in the above-threshold optical parametric oscillator. Phys Rev Lett. 2006 Oct 06;97(14):140504. doi: 10.1103/PhysRevLett.97.140504. Epub 2006 Oct 06. PMID: 17155232.
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Phys Rev Lett. 2006 Oct 06;97(14):140504. doi: 10.1103/PhysRevLett.97.140504. Epub 2006 Oct 06.

Direct production of tripartite pump-signal-idler entanglement in the above-threshold optical parametric oscillator.

Physical review letters

A S Villar, M Martinelli, C Fabre, P Nussenzveig

Affiliations

  1. Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, 05315-970 São Paulo, SP, Brazil.

PMID: 17155232 DOI: 10.1103/PhysRevLett.97.140504

Abstract

We calculate the quantum correlations existing among the three output fields (pump, signal, and idler) of a triply resonant nondegenerate optical parametric oscillator operating above threshold. By applying the standard criteria [P. van Loock and A. Furusawa, Phys. Rev. A 67, 052315 (2003)], we show that strong tripartite continuous-variable entanglement is present in this well-known and simple system. Furthermore, since the entanglement is generated directly from a nonlinear process, the three entangled fields can have very different frequencies, opening the way for multicolored quantum information networks.

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