Continuous variable entanglement using cold atoms

Details Continuous variable entanglement using cold atoms Continuous variable entanglement using cold atoms

2003-06-23

arxiv.org/abs/quant-ph/0306152v3

Physical Review Letters 92 (2004) 123601

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.92.123601

We present experimental demonstration of quadrature and polarization entanglement generated via the interaction between a coherent linearly polarized field and cold atoms in a high finesse optical cavity. The non linear atom-field interaction produces two squeezed modes with orthogonal polarizations which are used to generate a pair of non separable beams, the entanglement of which is demonstrated by checking the inseparability criterion for continuous variables recently derived by Duan et al. [Phys. Rev. Lett. 84, 2722 (2000)] and calculating the entanglement of formation [Giedke et al., Phys. Rev. Lett. 91, 107901 (2003)].

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