Sensitive detection of spin flip using spin-mixing dynamics of $^{87}$Rb Bose-Einstein condensates
ORAL
Abstract
We revisit experimentally the spin-mixing dynamics in $^{87}$Rb spinor Bose-Einstein condensates, starting with all atoms in the $F=1$, $m_F=0$ Zeeman sublevel. We show that the short-time dynamics in the parametric amplification regime [1] is extremely sensitive to the initial number of atoms in the $m_F=\pm1$ state. This behavior is utilized to precisely characterize the degree of spin flip down to a few atoms. The longer-time evolution beyond the undepleted approximation is also investigated both experimentally and theoretically by considering the atom loss, as well as background radio-frequency noise. \\\\ {[1] D. Linnemann et al., Phys. Rev. Lett. 117, 013001 (2016)}
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Authors
Qi Liu
Department of Physics, Tsinghua University
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University
Ling-Na Wu
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University
Yi-Quan Zou
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University
Shuai-Feng Guo
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University
Jia-Hao Cao
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University
Meng Khoon Tey
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University;Collaborative Innovation Center of Quantum Matter
Li You
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University;Collaborative Innovation Center of Quantum Matter
