Searching for new particles beyond the standard model with a single electron-spin quantum sensor

Abstract

Searching for new particles beyond the standard model is crucial for understanding several fundamental conundrums in physics and astrophysics. Amongst them, axions or similar hypothetical pseudoscalar bosons would mediate electron-nucleon interactions. While previous experiments set stringent upper bounds of this interaction strength with force range over $20\mu$m, experimental searching at shorter force range remains elusive. We develop a method that utilizes a near-surface Nitrogen-vacancy center as a quantum sensor to explore such interaction. New constraints for axion-mediated electron-nucleon coupling, $g_s^N{g}_p^e$, have been set for the force range $0.1$--$23\mu$m. The obtained upper bound of the interaction at $20\mu$m, $g_s^N{g}_p^e<6.24\times 10^{-15}$, is two orders of magnitude more stringent than that set by earlier experiments. Our method can be further extended to investigate other spin-dependent interactions and opens the door for the single-spin quantum sensor to explore new physics beyond the standard model.

References in corpus (10)

• Quantum sensing
• High-sensitivity diamond magnetometer with nanoscale resolution
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• Nanoscale magnetic imaging of a single electron spin under ambient conditions
• Spin-Dependent Macroscopic Forces from New Particle Exchange
• Preferred-Frame and CP-Violation Tests with Polarized Electrons
• Limits on a CP-violating scalar axion-nucleon interaction
• Double-quantum spin-relaxation limits to coherence of near-surface nitrogen-vacancy centers
• Dark energy from the string axiverse
• New CP-violation and preferred-frame tests with polarized electrons

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