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6CCVD Research

Detecting Axial Ratio of Microwave Field with High Resolution Using NV Centers in Diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-05-21
JournalSensors
AuthorsCuihong Li, Dengfeng Li, Y. H. Zheng, Fangā€Wen Sun, Aimin Du
InstitutionsUniversity of Science and Technology of China, Institute of Geology and Geophysics
Citations3

Abstract

Section titled ā€œAbstractā€

Polarization property characterization of the microwave (MW) field with high speed and resolution is vitally beneficial as the circularly-polarized MW field plays an important role in the development of quantum technologies and satellite communication technologies. In this work, we propose a scheme to detect the axial ratio of the MW field with optical diffraction limit resolution with a nitrogen vacancy (NV) center in diamond. Firstly, the idea of polarization selective detection of the MW magnetic field is carried out using a single NV center implanted in a type-IIa CVD diamond with a confocal microscope system achieving a sensitivity of 1.7 Ī¼T/Hz. Then, high speed wide-field characterization of the MW magnetic field at the submillimeter scale is realized by combining wide-field microscopy and ensemble NV centers inherent in a general CVD diamond. The precision axial ratio can be detected by measuring the magnitudes of two counter-rotating circularly-polarized MW magnetic fields. The wide-field detection of the axial ratio and strength parameters of microwave fields enables high speed testing of small-scale microwave devices.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  2. 2016 - Addressing spin transitions on Bi 209 donors in silicon using circularly polarized microwaves [Crossref]
  3. 1996 - A circularly polarized small-size microstrip antenna with a cross slot [Crossref]
  4. 2012 - Wideband circularly polarized UHF RFID reader antenna with high gain and wide axial ratio beamwidths [Crossref]
  5. 2018 - A Wideband Circularly Polarized Antenna with Wide Beamwidth for GNSS Applications [Crossref]
  6. 1999 - Calculation of calorimetric effect of thermo-field electron emission [Crossref]
  7. 2011 - Power sensor calibration by implementing true-twin microcalorimeter [Crossref]
  8. 1995 - Imaging radio-frequency fields using a scanning SQUID microscope [Crossref]
  9. 2010 - Imaging of microwave fields using ultracold atoms [Crossref]

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