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6CCVD Research

An field programmable gate array (FPGA)-based device for charge-state readout of nitrogen-vacancy (NV) center in diamond with nanosecond feedback speed

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2023-11-01
JournalAIP Advances
AuthorsRunchuan Ye, Yunpeng Zhai, Yushan Liu, Xue Lin, Nanyang Xu
InstitutionsHefei University of Technology, Zhejiang Lab

Abstract

Section titled ā€œAbstractā€

Ionization of nitrogen-vacancy (NV) center in diamond from the NVāˆ’ to NV0 state is a destructive process in applications, where a large amount of time is cost for high-fidelity readout. To this end, real-time adaptive feedback would be helpful to improve the readout efficiency. Here, we develop a field programmable gate array-based device that supports complex calculation and real-time feedback at the nanosecond level. This device integrates a time tagger for photon input, a programmable logic arrays for real-time calculation, and a 20-channel pulse streamer for control output. Based on this device, we demonstrate a high-efficiency of real-time charge-state readout. With this device, the signal-to-noise ratio of maximal adaptive-decision-based charge-state readout can be significantly reduced. Moreover, we demonstrate an application of NVāˆ’ purification with the real-time feedback, where the contrast of spin-state-dependent fluorescence is improved from 31.7% to 35.0%. The device can be easily extended to other quantum systems.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  2. 2021 - High-fidelity single-shot readout of single electron spin in diamond with spin-to-charge conversion [Crossref]
  3. 2020 - Orbital and spin dynamics of single neutrally-charged nitrogen-vacancy centers in diamond [Crossref]
  4. 2021 - Real-time optimal quantum control of mechanical motion at room temperature [Crossref]
  5. 2022 - Entanglement response in modulation optomechanical system controlled by the feedback optical field [Crossref]
  6. 2011 - Real-time quantum feedback prepares and stabilizes photon number states [Crossref]
  7. 2014 - Manipulating a qubit through the back action of sequential partial measurements and real-time feedback [Crossref]
  8. 2008 - Process tomography of field damping and measurement of Fock state lifetimes by quantum nondemolition photon counting in a cavity [Crossref]
  9. 2014 - Adaptive quantum nondemolition measurement of a photon number [Crossref]
  10. 2011 - Nanoscale magnetometry using a single-spin system in diamond [Crossref]

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