Spin-Squeezing and Light Entanglement in Coherent Population Trapping

Abstract

We show that high squeezing and entanglement can be generated at the output of a cavity containing atoms interacting with two fields in a Coherent Population Trapping situation, on account of a non-linear Faraday effect experienced by the fields close to a dark-state resonance in a cavity. Moreover, the cavity provides a feedback mechanism allowing to reduce the quantum fluctuations of the ground state spin, resulting in strong steady state spin-squeezing.

4 pages, 5 figures

References in corpus (18)

• Inseparability criterion for continuous variable systems
• Experimental long-lived entanglement of two macroscopic objects
• Resonant nonlinear magneto-optical effects in atoms
• Polarization squeezing and continuous-variable polarization entanglement
• Quantum noise and correlations in resonantly enhanced wave mixing based on atomic coherence
• Continuous variable entanglement using cold atoms
• Quantum state transfer between field and atoms in Electromagnetically Induced Transparency
• Polarization squeezing with cold atoms
• From EIT photon correlations to Raman anti-correlations in coherently prepared Rb vapor
• Enhancement of Magneto-Optic Effects via Large Atomic Coherence
• Squeezing with cold atoms
• Super-poissonian photon statistics and correlations between pump and probe fields in Electromagnetically Induced Transparency
• Pump-probe nonlinear magneto-optical rotation with frequency modulated light
• Nonlinear Magneto-Optical Rotation of Elliptically Polarized Light
• Can optical squeezing be generated via polarization self-rotation in a thermal vapour cell?
• Atomic squeezing in a Lambda system
• Dynamics of a pulsed continuous variable quantum memory
• Entanglement and squeezing in a two-mode system: theory and experiment

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