期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.013601
关键词
-
资金
- Air Force Office of Scientific Research
- U.S. Department of Defense through National Defense Science and Engineering Graduate Fellowship program
- National Science Foundation Graduate Fellowship
We realize a spin-orbit interaction between the collective spin precession and center-of-mass motion of a trapped ultracold atomic gas, mediated by spin-and position-dependent dispersive coupling to a driven optical cavity. The collective spin, precessing near its highest-energy state in an applied magnetic field, can be approximated as a negative-mass harmonic oscillator. When the Larmor precession and mechanical motion are nearly resonant, cavity mediated coupling leads to a negative-mass instability, driving exponential growth of a correlated mode of the hybrid system. We observe this growth imprinted on modulations of the cavity Held and estimate the full covariance of the resulting two-mode state by observing its transient decay during subsequent free evolution.
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