Continuous source of phase-controlled entangled two-photon laser

Document Type

Article

Publication Date

1-1-2007

Abstract

We show that an absolute coherent phase of a laser can be used to manipulate the entanglement of photon pairs in two-photon laser. We present simple physics behind a general master equation for two-photon laser. Our focus is on the generation of a continuous source of macroscopically entangled photon pairs in the double Lambda (or Raman) scheme. We show how the steady-state photon numbers and entanglement depend on the laser parameters, especially the phase. We obtain a relationship between entanglement and two-photon correlation. We derive conditions that give steady-state entanglement for the spontaneous Raman-electromagnetic-induced transparency scheme and use it to identify the region with macroscopic entanglement. No entanglement is found for the double resonant Raman scheme.

Keywords

Continuous variable systems, Lithography, Criterion

Publication Title

Physical Review A

ISSN

1050-2947

Divisions

PHYSICS

Volume

76

Issue

1

Additional Information

Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA

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