Nonclassical 2-photon interference with separate intrinsically narrowband fibre sources

Abstract

In this paper, we demonstrate a source of photon pairs based on four-wave-mixing in photonic crystal fibres. Careful engineering of the phase matching conditions in the fibres enables us to create photon pairs at 597 nm and 860 nm in an intrinsically factorable state showing no spectral correlations. This allows for heralding one photon in a pure state and hence renders narrow band filtering obsolete. The source is narrow band, bright and achieves an overall detection efficiency of up to 21% per photon. For the first time, a Hong-Ou-Mandel interference with unfiltered photons from separate fibre sources is presented.

10 pages, 6 figures

References in corpus (6)

• Beating the Standard Quantum Limit with Four Entangled Photons
• Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber
• Photonic crystal fibre source of photon pairs for quantum information processing
• Conditional preparation of single photons using parametric downconversion: A recipe for purity
• Photon pair generation using four-wave mixing in a microstructured fibre: theory versus experiment
• Heralded single photon source at 1550 nm from pulsed parametric down conversion

Cited by in corpus (5)

• Tailored photon-pair generation in optical fibers
• From quantum pulse gate to quantum pulse shaper -- enigneered frequency conversion in nonlinear optical waveguides
• Bright source of spectrally uncorrelated polarization-entangled photons with nearly single-mode emission
• High-visibility nonclassical interference between pure heralded single photons and weak coherent photons
• Heralding Single Photons Without Spectral Factorability