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Electron spin control of optically levitated nanodiamonds in vacuum

Author

Listed:
  • Thai M. Hoang

    (Purdue University)

  • Jonghoon Ahn

    (School of Electrical and Computer Engineering, Purdue University)

  • Jaehoon Bang

    (School of Electrical and Computer Engineering, Purdue University)

  • Tongcang Li

    (Purdue University
    School of Electrical and Computer Engineering, Purdue University
    Birck Nanotechnology Center, Purdue University
    Purdue Quantum Center, Purdue University)

Abstract

Electron spins of diamond nitrogen-vacancy (NV) centres are important quantum resources for nanoscale sensing and quantum information. Combining NV spins with levitated optomechanical resonators will provide a hybrid quantum system for novel applications. Here we optically levitate a nanodiamond and demonstrate electron spin control of its built-in NV centres in low vacuum. We observe that the strength of electron spin resonance (ESR) is enhanced when the air pressure is reduced. To better understand this system, we investigate the effects of trap power and measure the absolute internal temperature of levitated nanodiamonds with ESR after calibration of the strain effect. We also observe that oxygen and helium gases have different effects on both the photoluminescence and the ESR contrast of nanodiamond NV centres, indicating potential applications of NV centres in oxygen gas sensing. Our results pave the way towards a levitated spin–optomechanical system for studying macroscopic quantum mechanics.

Suggested Citation

  • Thai M. Hoang & Jonghoon Ahn & Jaehoon Bang & Tongcang Li, 2016. "Electron spin control of optically levitated nanodiamonds in vacuum," Nature Communications, Nature, vol. 7(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12250
    DOI: 10.1038/ncomms12250
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    Cited by:

    1. Yuanbin Jin & Kunhong Shen & Peng Ju & Xingyu Gao & Chong Zu & Alejandro J. Grine & Tongcang Li, 2024. "Quantum control and Berry phase of electron spins in rotating levitated diamonds in high vacuum," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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