Acoustic frequency atomic spin oscillator in the quantum regime
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Acoustic frequency atomic spin oscillator in the quantum regime. / Jia, Jun; Novikov, Valeriy; Brasil, Tulio Brito; Zeuthen, Emil; Müller, Jörg Helge; Polzik, Eugene S.
In: Nature Communications, Vol. 14, No. 1, 6396, 12.10.2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Acoustic frequency atomic spin oscillator in the quantum regime
AU - Jia, Jun
AU - Novikov, Valeriy
AU - Brasil, Tulio Brito
AU - Zeuthen, Emil
AU - Müller, Jörg Helge
AU - Polzik, Eugene S
N1 - © 2023. Springer Nature Limited.
PY - 2023/10/12
Y1 - 2023/10/12
N2 - Quantum noise reduction and entanglement-enhanced sensing in the acoustic frequency range is an outstanding challenge relevant for a number of applications including magnetometry and broadband noise reduction in gravitational wave detectors. Here 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 virtual spring softening are observed at oscillation frequencies down to the sub-kHz range. Quantum noise sources characteristic of spin oscillators operating in the near-DC frequency range are identified and means for their mitigation are presented.
AB - Quantum noise reduction and entanglement-enhanced sensing in the acoustic frequency range is an outstanding challenge relevant for a number of applications including magnetometry and broadband noise reduction in gravitational wave detectors. Here 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 virtual spring softening are observed at oscillation frequencies down to the sub-kHz range. Quantum noise sources characteristic of spin oscillators operating in the near-DC frequency range are identified and means for their mitigation are presented.
U2 - 10.1038/s41467-023-42059-y
DO - 10.1038/s41467-023-42059-y
M3 - Journal article
C2 - 37828042
VL - 14
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 6396
ER -
ID: 370421118