Controllable Frequency Entanglement via Auto-Phase-Matched Spontaneous Parametric Down-Conversion

Details Controllable Frequency Entanglement via Auto-Phase-Matched Spontaneous Parametric Down-Conversion Controllable Frequency Entanglement via Auto-Phase-Matched Spontaneous Parametric Down-Conversion

2002-07-29

arxiv.org/abs/quant-ph/0207166v2

Physics

Quantum Physics

5 pages, 4 figures; recalculated the bold visibility curve in Fig. 4 for a GaAs (instead of KTP) waveguide--conclusions unchan

Scientific paper

10.1103/PhysRevA.67.053810

A new method for generating entangled photons with controllable frequency correlation via spontaneous parametric down-conversion (SPDC) is presented. The method entails initiating counter-propagating SPDC in a single-mode nonlinear waveguide by pumping with a pulsed beam perpendicular to the waveguide. The method offers several advantages over other schemes, including the ability to generate frequency-correlated photon pairs regardless of the dispersion characteristics of the system. Numerical evidence demonstrates the improvement provided by this source in the special case of frequency-correlated two-photon states.

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