Compact source of narrow-band counterpropagating polarization-entangled photon pairs using a single dual-periodically poled crystal

Abstract

We propose a scheme for the generation of counterpropagating polarization-entangled photon pairs from a dual-periodically poled crystal. Compared with the usual forward-wave type source, this source, in the backward-wave way, has a much narrower bandwidth. With a 2-cm-long bulk crystal, the bandwidths of the example sources are estimated to be 3.6 GHz, and the spectral brightnesses are more than 100 pairs/(s GHz mW). Two concurrent quasi-phase-matched spontaneous parametric down-conversion processes in a single crystal enable our source to be compact and stable. This scheme does not rely on any state projection and applies to both degenerate and non-degenerate cases, facilitating applications of the entangled photons.

6 pages, 1 figure

References in corpus (16)

• Review article: Linear optical quantum computing
• Photonic quantum technologies
• Quantum Communication
• A solid state light-matter interface at the single photon level
• Research on Hidden Variable Theories: a review of recent progresses
• A wavelength-tunable fiber-coupled source of narrowband entangled photons
• Towards high-speed optical quantum memories
• Entangling Independent Photons by Time Measurement
• Generation of Narrow-Band Polarization-Entangled Photon Pairs for Atomic Quantum Memories
• A pulsed Sagnac source of narrowband polarization-entangled photons
• Ultrabright Backward-wave Biphoton Source
• Generation of polarization entangled photons using type-II doubly periodically poled lithium niobate waveguides
• Pure single photon generation by type-I PDC with backward-wave amplification
• Three-color Sagnac source of polarization-entangled photon pairs
• Quantum properties of counter-propagating two-photon states generated in a planar waveguide
• A single-crystal source of path-polarization entangled photons at non-degenerate wavelengths

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• Nonlinear Domain Engineering for Quantum Technologies
• Design of mid-infrared entangled photon sources using lithium niobate
• Counter-propagating spectrally uncorrelated biphotons at 1550 nm generated from periodically poled MTiOXO4 (M = K, Rb, Cs; X = P, As)
• Narrow-band photonic quantum entanglement with counterpropagating domain engineering
• Generation and manipulation of entangled photons in a domain-engineered lithium niobate waveguide