Optimal Generation of Pulsed Entangled Photon Pairs

Abstract

We experimentally investigate a double-pass parametric down-conversion scheme for producing pulsed, polarization-entangled photon pairs with high visibility. The amplitudes for creating photon pairs on each pass interfere to compensate for distinguishing characteristics that normally degrade two-photon visibility. The result is a high-flux source of polarization-entangled photon pulses that does not require spectral filtering. We observe quantum interference visibility of over 95% without the use of spectral filters for 200 femtosecond pulses, and up to 98.1% with 5 nm bandwidth filters.

8 pages, 6 figures

References in corpus (3)

• Experimental Analysis of a 4-Qubit Cluster State
• Quantum entanglement of a large number of photons
• Multiphoton path entanglement by non-local bunching

Cited by in corpus (3)

• Heralded Generation of Ultrafast Single Photons in Pure Quantum States
• A pulsed Sagnac source of narrowband polarization-entangled photons
• Joint Spectrum Mapping of Polarization Entanglement in Spontaneous Parametric Down-conversion