期刊
LIGHT-SCIENCE & APPLICATIONS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/lsa.2016.32
关键词
diamond nanophotonics; fiber optics; nitrogen vacancy center; quantum optics; single photon source
类别
资金
- MIT SuperUROP (Undergraduate Research Opportunities Program)
- Alexander von Humboldt-Foundation
- NASA Office of the Chief Technologist's Space Technology Research Fellowship
- AFOSR Quantum Memories MURI
- NSF iQuISE program [0801525]
- US Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]
A central goal in quantum information science is to efficiently interface photons with single optical modes for quantum networking and distributed quantum computing. Here, we introduce and experimentally demonstrate a compact and efficient method for the low-loss coupling of a solid-state qubit, the nitrogen vacancy (NV) center in diamond, with a single-mode optical fiber. In this approach, single-mode tapered diamond waveguides containing exactly one high quality NV memory are selected and integrated on tapered silica fibers. Numerical optimization of an adiabatic coupler indicates that near-unity-efficiency photon transfer is possible between the two modes. Experimentally, we find an overall collection efficiency between 16% and 37% and estimate a single photon count rate at saturation above 700 kHz. This integrated system enables robust, alignment-free, and efficient interfacing of single-mode optical fibers with single photon emitters and quantum memories in solids.
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