Journal
PHYSICAL REVIEW A
Volume 83, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.83.031806
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Funding
- European Community through the Marie Curie Initial Training Network [213681, 248095, CA-ITN-214962-FASTQUAST]
- EPSRC [EP/C51933/0]
- Royal Society
- Engineering and Physical Sciences Research Council [EP/H03031X/1, EP/E036066/1] Funding Source: researchfish
- EPSRC [EP/H03031X/1, EP/E036066/1] Funding Source: UKRI
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High-quality quantum sources are of paramount importance for the implementation of quantum technologies. We present here a heralded single-photon source based on commercial-grade polarization-maintaining optical fiber. The heralded photons exhibit a purity of at least 0.84 and an unprecedented heralding efficiency into a single-mode fiber of 85%. The birefringent phase-matching condition of the underlying four-wave mixing process can be controlled mechanically to optimize the wavelength tuning needed for interfacing multiple sources, as is required for large-scale entanglement generation.
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