Acoustic frequency atomic spin oscillator in the quantum regime
- URL: http://arxiv.org/abs/2303.11029v3
- Date: Fri, 18 Aug 2023 23:51:53 GMT
- Title: Acoustic frequency atomic spin oscillator in the quantum regime
- Authors: Jun Jia, Valeriy Novikov, Tulio Brito Brasil, Emil Zeuthen, J\"org
Helge M\"uller and Eugene S. Polzik
- Abstract summary: Quantum back-action of the spin measurement and ponderomotive squeezing of light are observed at spin oscillation down to 6 kHz.
Results constitute an important step towards quantum noise reduction and entanglement-enhanced sensing in the acoustic range.
Results are relevant for broadband noise reduction in gravitational wave detectors.
- Score: 2.1057988880229024
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We experimentally demonstrate quantum behavior of a macroscopic atomic spin
oscillator in the acoustic frequency range. Quantum back-action of the spin
measurement, ponderomotive squeezing of light, and oscillator spring softening
are observed at spin oscillation frequencies down to 6 kHz. Quantum noise
sources characteristic of spin oscillators operating in the near-DC frequency
range are identified and means for their mitigation are presented. These
results constitute an important step towards quantum noise reduction and
entanglement-enhanced sensing in the acoustic range using a negative-mass
reference frame. In particular, the results are relevant for broadband noise
reduction in gravitational wave detectors.
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