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APS » Journals » Phys. Rev. Lett. » Volume 96 » Issue 6
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Phys. Rev. Lett. 96, 063601 (2006) [4 pages]

Harmonic Entanglement with Second-Order Nonlinearity

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Nicolai B. Grosse1, Warwick P. Bowen1,2, Kirk McKenzie1, and Ping Koy Lam1
1Quantum Optics Group, Department of Physics, Faculty of Science, The Australian National University, ACT 0200, Australia
2Norman Bridge Laboratory of Physics, California Institute of Technology, Pasadena, California 91125, USA

Received 6 July 2005; published 13 February 2006

We investigate the second-order nonlinear interaction as a means to generate entanglement between fields of differing wavelengths and show that perfect entanglement can, in principle, be produced between the fundamental and second-harmonic fields in these processes. Neither pure second-harmonic generation nor parametric oscillation optimally produce entanglement; such optimal entanglement is rather produced by an intermediate process.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.063601
DOI:
10.1103/PhysRevLett.96.063601
PACS:
42.50.Dv, 03.67.Mn, 42.65.Yj
 
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