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6CCVD Research

Suppressing Thermal Noise to Sub-Millikelvin Level in a Single-Spin Quantum System Using Realtime Frequency Tracking

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2024-07-13
JournalMicromachines
AuthorsZhiyi Hu, Jingyan He, Runchuan Ye, Xue Lin, Feifei Zhou
InstitutionsHefei University of Technology, Zhejiang University

Abstract

Section titled ā€œAbstractā€

A single nitrogen-vacancy (NV) center in a diamond can be used as a nanoscale sensor for magnetic field, electric field or nuclear spins. Due to its low photon detection efficiency, such sensing processes often take a long time, suffering from an electron spin resonance (ESR) frequency fluctuation induced by the time-varying thermal perturbations noise. Thus, suppressing the thermal noise is the fundamental way to enhance single-sensor performance, which is typically achieved by utilizing a thermal control protocol with a complicated and highly costly apparatus if a millikelvin-level stabilization is required. Here, we analyze the real-time thermal drift and utilize an active way to alternately track the single-spin ESR frequency drift in the experiment. Using this method, we achieve a temperature stabilization effect equivalent to sub-millikelvin (0.8 mK) level with no extra environmental thermal control, and the spin-state readout contrast is significantly improved in long-lasting experiments. This method holds broad applicability for NV-based single-spin experiments and harbors the potential for prospective expansion into diverse nanoscale quantum sensing domains.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2024 - Single-molecule scale magnetic resonance spectroscopy using quantum diamond sensors [Crossref]
  2. 2020 - Calibration-Free Vector Magnetometry Using Nitrogen-Vacancy Center in Diamond Integrated with Optical Vortex Beam [Crossref]
  3. 2018 - Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond [Crossref]
  4. 2017 - Submillihertz magnetic spectroscopy performed with a nanoscale quantum sensor [Crossref]
  5. 2013 - Nanoscale Nuclear Magnetic Resonance with a Nitrogen-Vacancy Spin Sensor [Crossref]
  6. 2021 - Nanoscale electric-field imaging based on a quantum sensor and its charge-state control under ambient condition [Crossref]
  7. 2014 - Electronic properties and metrology applications of the diamond NV- center under pressure [Crossref]
  8. 2011 - Electric-field sensing using single diamond spins [Crossref]
  9. 2019 - Robust and Accurate Electric Field Sensing with Solid State Spin Ensembles [Crossref]

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