期刊
NANO LETTERS
卷 19, 期 12, 页码 9037-9044出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.9b04069
关键词
Plasmonic nanocavities; carbon nanotubes; indistinguishable single photons; telecommunication bands
类别
资金
- National Science Foundation (NSF) [DMR-1506711, DMR-1809235]
- NSF [ECCS-MRI-1531237]
- LANL LDRD program
- DOE BES FWP [LANLBES22]
- U.S. Department of Energy (DOE) [DE-AC36-08GO28308]
- Solar Photochemistry Program, Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy (DOE)
Indistinguishable single photon generation at telecom wavelengths from solid-state quantum emitters remains a significant challenge to scalable quantum information processing. Here we demonstrate efficient generation of indistinguishable single photons directly in the telecom O-band from aryl-functionalized carbon nano tubes by overcoming the emitter quantum decoherence with plasmonic nanocavities. With an unprecedented single-photon spontaneous emission time down to 10 ps (from initially 0.7 ns) generated in the coupling scheme, we show a two-photon interference visibility at 4 K reaching up to 0.79, even without applying post selection. Cavity-enhanced quantum yields up to 74% and Purcell factors up to 415 are achieved with single-photon purities up to 99%. Our results establish the capability to fabricate fiber-based photonic devices for quantum information technology with coherent properties that can enable quantum logic.
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