Generation of a two-photon singlet beam

Details Generation of a two-photon singlet beam Generation of a two-photon singlet beam

2005-03-12

arxiv.org/abs/quant-ph/0503117v1

Physical Review Letters 92 (4): Art. No. 043602 JAN 30 2004

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.92.043602

Controlling the pump beam transverse profile in multimode Hong-Ou-Mandel interference, we generate a ''localized" two-photon singlet state, in which both photons propagate in the same beam. This type of multi-photon singlet beam may useful in quantum communication to avoid decoherence. We show that although the photons are part of the same beam, they are never in the same plane wave mode, which is characterized by spatial antibunching behavior in the plane normal to the propagation direction.

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