Towards an efficient spin-photon interface with near-deterministically engineered defects in diamond

Laiyi Weng; Sam Johnson; Paul Hill; Hangyu Liu; Yu-chen Chen; Ben Griffiths; Shannon Nicley; Shazeaa Ishmael; Colin J. Stephen; Yashna Lekhai; Ben Green; Aurelien A. P. Trichet; Patrick Salter; Martin Booth; Erdan Gu; Gavin Morley; Martin E. Newton; Jason M. Smith

doi:10.1117/12.2507298

4 March 2019 Towards an efficient spin-photon interface with near-deterministically engineered defects in diamond

Laiyi Weng, Sam Johnson, Paul Hill, Hangyu Liu, Yu-chen Chen, Ben Griffiths, Shannon Nicley, Shazeaa Ishmael, Colin J. Stephen, Yashna Lekhai, Ben Green, Aurelien A. P. Trichet, Patrick Salter, Martin Booth, Erdan Gu, Gavin Morley, Martin E. Newton, Jason M. Smith

Author Affiliations +

Proceedings Volume 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII; 109330E (2019) https://doi.org/10.1117/12.2507298
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

In this work, we demonstrate two developments, in device and material engineering respectively, towards an efficient spin-photon device using colour centres in diamond for scalable quantum computing networks: firstly, we report the emission enhancement of the coherent zero-phonon-line transistion of an nitrogen vacancy centre in a diamond membrane on coupling to a tunable open-cavity; secondly, we present a new method for deterministic writing of NV arrays in bulk diamond with a 96% yield of single defects, a 50 nm positional accuracy in the image plane, and NV electron spin coherence (T2) times of up to 170 microseconds.

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Laiyi Weng, Sam Johnson, Paul Hill, Hangyu Liu, Yu-chen Chen, Ben Griffiths, Shannon Nicley, Shazeaa Ishmael, Colin J. Stephen, Yashna Lekhai, Ben Green, Aurelien A. P. Trichet, Patrick Salter, Martin Booth, Erdan Gu, Gavin Morley, Martin E. Newton, and Jason M. Smith "Towards an efficient spin-photon interface with near-deterministically engineered defects in diamond", Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 109330E (4 March 2019); https://doi.org/10.1117/12.2507298

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