Coupling Impurity Spins in Diamond to a 3D Loop-gap Resonator

ORAL

Abstract

We designed a loop-gap microwave resonator for applications of spin-based hybrid quantum systems, and tested it with impurity spins in diamond. Strong coupling with an ensemble of nitrogen-vacancy (NV) centers as well as that of nitrogen (P1) centers were observed. The external coupling rate can be tuned by changing the depth of the microwave SMA antenna pins. We also demonstrated time-domain measurements using standard pulse sequences of electron spin resonance. Large echo signals appear thanks to the large number of spins that are homogeneously coupled to the microwave magnetic field of the resonator. Coherence time T2 and spin relaxation time T1 were measured at 10 mK.

*J.B., Y.K., and D.K. were supported by an internal grant from the Okinawa Institute of Science and Technology (OIST) Graduate University, and Y.K. was supported by JST-PRESTO.

–

Presenters

  • Jason Ball

    • Quantum Dynamics Unit, Okinawa Institute of Science and Technology

Authors

  • Jason Ball

    • Quantum Dynamics Unit, Okinawa Institute of Science and Technology

  • Yuimaru Kubo

    • Quantum Dynamics Unit, Okinawa Institute of Science and Technology

  • Junichi Isoya

    • Research Center for Knowledge Communities, University of Tsukuba

  • Denis Konstantinov

    • Quantum Dynamics Unit, Okinawa Institute of Science and Technology