High-Resolution Quantum Sensing with Shaped Control Pulses

J. Zopes, K. Sasaki, K. S. Cujia, J. M. Boss, K. Chang, T. F. Segawa, K. M. Itoh, and C. L. Degen
Phys. Rev. Lett. 119, 260501 – Published 28 December 2017
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Abstract

We investigate the application of amplitude-shaped control pulses for enhancing the time and frequency resolution of multipulse quantum sensing sequences. Using the electronic spin of a single nitrogen-vacancy center in diamond and up to 10 000 coherent microwave pulses with a cosine square envelope, we demonstrate 0.6-ps timing resolution for the interpulse delay. This represents a refinement by over 3 orders of magnitude compared to the 2-ns hardware sampling. We apply the method for the detection of external ac magnetic fields and nuclear magnetic resonance signals of C13 spins with high spectral resolution. Our method is simple to implement and especially useful for quantum applications that require fast phase gates, many control pulses, and high fidelity.

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  • Received 22 May 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.260501

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyCondensed Matter, Materials & Applied Physics

Authors & Affiliations

J. Zopes1, K. Sasaki2, K. S. Cujia1, J. M. Boss1, K. Chang1, T. F. Segawa1, K. M. Itoh2, and C. L. Degen1,*

  • 1Department of Physics, ETH Zurich, Otto Stern Weg 1, 8093 Zurich, Switzerland
  • 2School of Fundamental Science and Technology, Keio University, Yokohama 223-8522, Japan

  • *degenc@ethz.ch

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Issue

Vol. 119, Iss. 26 — 29 December 2017

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