Phase Controlled Continuously Entangled Two-Photon Laser with Double $Λ$ Scheme

Details Phase Controlled Continuously Entangled Two-Photon Laser with Double $Λ$ Scheme Phase Controlled Continuously Entangled Two-Photon Laser with Double $Λ$ Scheme

2007-03-10

arxiv.org/abs/quant-ph/0703084v1

Physics

Quantum Physics

6 pages (two-column), 4 figures. submitted to a journal on 14 February 2007

Scientific paper

We show that an absolute coherent phase of a laser can be used to manipulate the entanglement of photon pairs of two-photon laser. Our focus is on the generation of a continuous source of entangled photon pairs in the double $\Lambda $ (or Raman) scheme. We study the dependence of steady state entanglement on the phase and laser parameters. We obtain a relationship between entanglement and two-photon correlation. We derive conditions that give steady state entanglement for the Raman-EIT scheme and use it to identify region of steady state macroscopic entanglement. No entanglement is found for the double resonant Raman scheme for any laser parameters.

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