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Hybrid sensors based on colour centres in diamond and piezoactive layers

Author

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  • Jianming Cai

    (Institut für Theoretische Physik, Universität Ulm
    Centre for Integrated Quantum Science and Technology, Universität Ulm)

  • Fedor Jelezko

    (Centre for Integrated Quantum Science and Technology, Universität Ulm
    Institut für Quantenoptik, Universität Ulm)

  • Martin B. Plenio

    (Institut für Theoretische Physik, Universität Ulm
    Centre for Integrated Quantum Science and Technology, Universität Ulm)

Abstract

The ability to measure weak signals such as pressure, force, electric field and temperature with nanoscale devices and high spatial resolution offers a wide range of applications in fundamental and applied sciences. Here we present a proposal for a hybrid device composed of thin film layers of diamond with colour centres and piezoactive elements for the transduction and measurement of physical signals. The magnetic response of a piezomagnetic layer to an external stress or a stress induced by a signal is shown to affect significantly the spin properties of nitrogen-vacancy centres in diamond. Under ambient conditions, realistic environmental noise and material imperfections, we show that this hybrid device can achieve significant improvements in sensitivity over the pure diamond-based approach in combination with nanometre-scale spatial resolution. Furthermore, the proposed hybrid architecture offers novel possibilities for engineering strong coherent couplings between nanomechanical oscillator and solid state spin qubits.

Suggested Citation

  • Jianming Cai & Fedor Jelezko & Martin B. Plenio, 2014. "Hybrid sensors based on colour centres in diamond and piezoactive layers," Nature Communications, Nature, vol. 5(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5065
    DOI: 10.1038/ncomms5065
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