Experimental continuous-variable entanglement from a phase-difference-locked optical parametric oscillator
arXiv:quant-ph/0604134 · doi:10.1103/PhysRevA.74.041804
Abstract
We observed continuous-variable entanglement between the bright beams emitted above threshold by an ultrastable optical parametric oscillator, classically phase-locked at a frequency difference of 161.8273240(5) MHz. The amplitude-difference squeezing is -3 dB and the phase-sum one is -1.35 dB. Besides proving entanglement in a new physical system, the phase-locked OPO, such unprecedented frequency-difference stability paves the way for transferring entanglement between different optical frequencies and densely implementing continuous-variable quantum information in the frequency domain.
4 pages, 4 figures, submitted for publication
References in corpus (17)
- Quantum information with continuous variables
- Peres-Horodecki separability criterion for continuous variable systems
- Inseparability criterion for continuous variable systems
- Generation of Bright Two-Color Continuous Variable Entanglement
- Narrowband frequency tunable light source of continuous quadrature entanglement
- Multipartite continuous-variable entanglement from concurrent nonlinearities
- Experimental Demonstration of Quantum Entanglement Between Frequency-Nondegenerate Optical Twin Beams
- Experimental investigation of amplitude and phase quantum correlations in a type II OPO above threshold: from the non-degenerate to the degenerate operation
- Bright tripartite entanglement in triply concurrent parametric oscillation
- Experimental Generation of Large Quadrature EPR Entanglement with a Self-Phase-Locked Type II OPO Below Threshold
- Observation of triply coincident nonlinearities in periodically poled KTiOPO4
- Quantum interference of ultrastable twin optical beams
- Continuous variable entanglement of phase locked light beams
- Stable nondegenerate optical parametric oscillation at degenerate frequencies in Na:KTP
- Non-linear and quantum optics of a type II OPO containing a birefringent element Part 2 : bright entangled beams generation
- Sub-shot-noise heterodyne polarimetry
- Non-linear and quantum optics of a type II OPO containing a birefringent element Part 1: Classical operation
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