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New Constraints on Exotic Spin-Spin-Velocity-Dependent Interactions with Solid-State Quantum Sensors
Yue Huang1,2, Hang Liang1,2, Man Jiao1,2,3
1CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.
Physical Review Letters
|May 17, 2024
Summary
Researchers explored novel spin-spin-velocity interactions using diamond nitrogen-vacancy (NV) ensembles. New experimental limits were set for T-violating and P,T-violating interactions at short force ranges.
Area of Science:
- Quantum physics
- Experimental particle physics
- Condensed matter physics
Background:
- Understanding fundamental interactions is crucial for advancing physics.
- Spin-dependent forces, particularly those involving velocity, are poorly constrained at short ranges.
- Nitrogen-vacancy (NV) centers in diamond offer a promising platform for sensitive spin measurements.
Purpose of the Study:
- To experimentally investigate exotic spin-spin-velocity-dependent interactions.
- To establish new limits on coupling coefficients for T-violating and P,T-violating interactions.
- To probe these interactions at short force ranges using a novel experimental setup.
Main Methods:
- Development of an elaborate experimental setup using two nitrogen-vacancy (NV) ensembles in diamond.
- One NV ensemble acted as the spin source, the other as the spin sensor.
- Coherent manipulation of quantum states and precise control of relative velocity at the micrometer scale.
Main Results:
- New experimental limits were established for a T-violating interaction (V6) for force ranges shorter than 1 cm.
- New constraints were obtained for a P,T-violating interaction (V14) for force ranges shorter than 1 km.
- The study successfully probed exotic spin interactions at unprecedented short ranges.
Conclusions:
- The experiment provides stringent new limits on exotic spin-spin-velocity-dependent interactions.
- This work demonstrates the capability of NV ensembles in diamond for sensitive measurements of fundamental forces.
- The findings contribute to constraining theories beyond the Standard Model of particle physics.
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