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

Paper Details

Date Published: 4 March 2019
Proc. SPIE 10933, Advances in Photonics of Quantum Computing, Memory, and Communication XII, 109330E (4 March 2019); doi: 10.1117/12.2507298
Show Author Affiliations
Laiyi Weng, Univ. of Oxford (United Kingdom)
Sam Johnson, Univ. of Oxford (United Kingdom)
Paul Hill, Univ. of Strathclyde (United Kingdom)
Hangyu Liu, Univ. of Strathclyde (United Kingdom)
Yu-chen Chen, Univ. of Oxford (United Kingdom)
Ben Griffiths, Univ. of Oxford (United Kingdom)
Shannon Nicley, Univ. of Oxford (United Kingdom)
Shazeaa Ishmael, Univ. of Oxford (United Kingdom)
Colin J. Stephen, The Univ. of Warwick (United Kingdom)
Yashna Lekhai, The Univ. of Warwick (United Kingdom)
Ben Green, The Univ. of Warwick (United Kingdom)
Aurelien A. P. Trichet, Univ. of Oxford (United Kingdom)
Patrick Salter, Univ. of Oxford (United Kingdom)
Martin Booth, Univ. of Oxford (United Kingdom)
Erdan Gu, Univ. of Strathclyde (United Kingdom)
Gavin Morley, The Univ. of Warwick (United Kingdom)
Martin E. Newton, The Univ. of Warwick (United Kingdom)
Jason M. Smith, Univ. of Oxford (United Kingdom)

Published in SPIE Proceedings Vol. 10933:
Advances in Photonics of Quantum Computing, Memory, and Communication XII
Philip R. Hemmer; Alan L. Migdall; Zameer Ul Hasan, Editor(s)

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