Journal
PHYSICAL REVIEW APPLIED
Volume 9, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.9.031002
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Funding
- Netherlands Organisation for Scientific Research (NWO) [08QIP6-2]
- NWO
- Ministry for Education, Culture and Science (OCW) as part of the Frontiers of Nanoscience program
- National Science Foundation (NSF) [0901886, 0960331]
- Direct For Mathematical & Physical Scien [0960331] Funding Source: National Science Foundation
- Division Of Materials Research [0960331] Funding Source: National Science Foundation
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We present a fully fiber-coupled source of high-fidelity single photons. An (In,Ga) As semiconductor quantum dot is embedded in an optical Fabry-Perot microcavity with a robust design and rigidly attached single-mode fibers, which enables through-fiber cross-polarized resonant laser excitation and photon extraction. Even without spectral filtering, we observe that the incident coherent light pulses are transformed into a stream of single photons with high purity (97%) and indistinguishability (90%), which is measured at an in-fiber brightness of 5% with an excellent cavity-mode-to-fiber coupling efficiency of 85%. Our results pave the way for fully fiber-integrated photonic quantum networks. Furthermore, our method is equally applicable to fiber-coupled solid-state cavity-QED-based photonic quantum gates.
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