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- Title
Generation of macroscopic entangled states by means of x<sup>(2)</sup> nonlinearity without photon number resolving detection.
- Authors
Podoshvedov, S. A.
- Abstract
We generalize the scheme of conditional preparation of x(2) macroscopic entangled states [S.A. Podoshvedov, JETP 129 (2006)]. The studied system consists of a system of coupled down converters with type-I phase matching pumped simultaneously by powerful optical fields in coherent states with one auxiliary photon in the superposition state of two input modes and a projective measurement system. The projective measurement system involves two Hadamard gates introduced to generated output modes followed by photodetectors. Identification of macroscopic entangled states is produced by registration of one photon. No photon number resolving detection is required for the studied scheme.
- Subjects
COHERENT states; STOCHASTIC processes; PHOTON detectors; OPTICAL measurements; PHOTONS; DETECTORS
- Publication
JETP Letters, 2006, Vol 83, Issue 8, p360
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364006080133