Efficient photon coupling from a diamond nitrogen vacancy center by integration with silica fiber[J]. LSA, 2016,5(1).
Patel, R. N. et al. Efficient photon coupling from a diamond nitrogen vacancy center by integration with silica fiber. Light: Science & Applications, 5, e16032 (2016).
Efficient photon coupling from a diamond nitrogen vacancy center by integration with silica fiber[J]. LSA, 2016,5(1). DOI: 10.1038/lsa.2016.32.
Patel, R. N. et al. Efficient photon coupling from a diamond nitrogen vacancy center by integration with silica fiber. Light: Science & Applications, 5, e16032 (2016). DOI: 10.1038/lsa.2016.32.
Efficient photon coupling from a diamond nitrogen vacancy center by integration with silica fiber
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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