Experimental Constraint on an Exotic Parity-Odd Spin- and Velocity-Dependent Interaction with a Single Electron Spin Quantum Sensor

Man Jiao; Maosen Guo; Xing Rong; Yi-Fu Cai; Jiangfeng Du

doi:10.1103/PhysRevLett.127.010501

Experimental Constraint on an Exotic Parity-Odd Spin- and Velocity-Dependent Interaction with a Single Electron Spin Quantum Sensor

Phys Rev Lett. 2021 Jul 2;127(1):010501. doi: 10.1103/PhysRevLett.127.010501.

Authors

Man Jiao^{1

2

3}, Maosen Guo^{1

2

3}, Xing Rong^{1

2

3}, Yi-Fu Cai^{4

5}, Jiangfeng Du^{1

2

3}

Affiliations

¹ Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.
² CAS Key Laboratory of Microscale Magnetic Resonance, University of Science and Technology of China, Hefei 230026, China.
³ Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.
⁴ CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China.
⁵ School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China.

PMID: 34270279
DOI: 10.1103/PhysRevLett.127.010501

Abstract

Improved laboratory limits on the exotic spin- and velocity-dependent interaction at the micrometer scale are established with a single electron spin quantum sensor. The single electron spin of a near-surface nitrogen-vacancy center in diamond is used as the quantum sensor, and a fused-silica half-sphere lens is taken as the source of the moving nucleons. The exotic interaction between the polarized electron and the moving nucleon source is explored by measuring the possible magnetic field sensed by the electron spin quantum sensor. Our experiment sets improved constraints on the exotic spin- and velocity-dependent interaction within the force range from 1.4 to 330 μm. The upper limit of the coupling g_{A}^{e}g_{V}^{N} at 200 μm is |g_{A}^{e}g_{V}^{N}|≤5.3×10^{-19}, significantly improving the current laboratory limit by more than 4 orders of magnitude.