Skip to content
6CCVD Research

Broadband microwave antenna for uniform manipulation of millimeter-scale volumes of diamond quantum sensors

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-12-08
JournalJournal of Applied Physics
AuthorsYukitoshi Takemura, Kazushi Hayashi, Y. Yoshii, M. Saito, Shinobu Onoda
InstitutionsKyoto University, National Institutes for Quantum Science and Technology
Citations3

Abstract

Section titled ā€œAbstractā€

Quantum sensors based on nitrogen-vacancy (NV) centers in diamond are expected to demonstrate a wide variety of applications. For high-sensitivity quantum sensors with NV center ensembles, uniform manipulation of the electron spins of the NV centers in large volumes is required. In addition, a broad microwave frequency bandwidth for manipulating the NV centersā€™ electron spin is necessary for vector magnetometry and measurement under a finite static magnetic field. Here, we demonstrate a broadband microwave antenna for uniform manipulation of millimeter-scale volumes of diamond quantum sensors. The simulation shows that the current is distributed at both edges of the loop coil of a single copper plate due to the skin effect. The loop coil acts like a Helmholtz coil, which realizes uniformity in the z-direction of the microwave magnetic field (B1). The plate structure has a higher mechanical stability, durability, and a larger heat capacity than the Helmholtz coil, due to its large volume. The antenna achieves a higher performance than previously reported antennae, with a maximal B1 of 4.5 G, a broad bandwidth of 287 Ā± 6 MHz, and a peak-to-peak variation of 9.2% over a 3.1 mm3 cylinder volume. These performances show that the presented antenna is suitable for manipulating solid-state spin ensembles for high-sensitivity quantum sensors.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2013 - Solid-state electronic spin coherence time approaching one second [Crossref]

Reads Similar to This

Measurement of weak static magnetic field with nitrogen-vacancy color center Using Weak Measurements to Synthesize Projective Measurement of Nonconserved Observables of Weakly Coupled Nuclear Spins Efficient extraction of zero-phonon-line photons from single nitrogen vacancy centers in an integrated GaP-on-diamond platform