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Efficient Photon Coupling from a Diamond Nitrogen Vacancy Centre by Integration with Silica Fibre by Patel, Rishi N.; Schröder, Tim; Wan, Noel; Li, Luozhou; Mouradian, Sara L.; Chen, Edward H.; Englund, Dirk R. is a scholarly article available to read on EtoBox.

What is Efficient Photon Coupling from a Diamond Nitrogen Vacancy Centre by Integration with Silica Fibre about?

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) centre in diamond, with a single-mode optical fibre. In this approach, single-mode tapered diamond waveguides containing exactly one high quality NV memory are selected and integrated on tapered silica fibres. 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 18-40 % and observe a raw single photon count rate above 700 kHz. This integrated system enables robust, alignment-free, and efficient interfacing of single-mode optical fibres with single photon emitters and quantum memories in solids.

Author

Patel, Rishi N.; Schröder, Tim; Wan, Noel; Li, Luozhou; Mouradian, Sara L.; Chen, Edward H.; Englund, Dirk R.

Published

2015

Language

EN