Retrieval of cavity-generated atomic spin squeezing after free-space release

Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B.K. Malia, O. Hosten, M.A. Kasevich, Physical Review A 102 (2020).


Journal Article | Published | English

Scopus indexed
Author
Wu, Yunfan; Krishnakumar, Rajiv; Martínez-Rincón, Julián; Malia, Benjamin K.; Hosten, OnurIST Austria ; Kasevich, Mark A.
Department
Abstract
We demonstrate that releasing atoms into free space from an optical lattice does not deteriorate cavity-generated spin squeezing for metrological purposes. In this work, an ensemble of 500000 spin-squeezed atoms in a high-finesse optical cavity with near-uniform atom-cavity coupling is prepared, released into free space, recaptured in the cavity, and probed. Up to ∼10 dB of metrologically relevant squeezing is retrieved for 700μs free-fall times, and decaying levels of squeezing are realized for up to 3 ms free-fall times. The degradation of squeezing results from loss of atom-cavity coupling homogeneity between the initial squeezed state generation and final collective state readout. A theoretical model is developed to quantify this degradation and this model is experimentally validated.
Publishing Year
Date Published
2020-07-30
Journal Title
Physical Review A
Acknowledgement
We thank N. Engelsen for comments on the manuscript. This work was supported by the Office of Naval Research, Vannevar Bush Faculty Fellowship, Department of Energy, and Defense Threat Reduction Agency. R.K. was partly supported by the AQT/INQNET program at Caltech.
Volume
102
Issue
1
Article Number
012224
ISSN
eISSN
IST-REx-ID

Cite this

Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. 2020;102(1). doi:10.1103/PhysRevA.102.012224
Wu, Y., Krishnakumar, R., Martínez-Rincón, J., Malia, B. K., Hosten, O., & Kasevich, M. A. (2020). Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A, 102(1). https://doi.org/10.1103/PhysRevA.102.012224
Wu, Yunfan, Rajiv Krishnakumar, Julián Martínez-Rincón, Benjamin K. Malia, Onur Hosten, and Mark A. Kasevich. “Retrieval of Cavity-Generated Atomic Spin Squeezing after Free-Space Release.” Physical Review A 102, no. 1 (2020). https://doi.org/10.1103/PhysRevA.102.012224.
Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B. K. Malia, O. Hosten, and M. A. Kasevich, “Retrieval of cavity-generated atomic spin squeezing after free-space release,” Physical Review A, vol. 102, no. 1, 2020.
Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. 2020. Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. 102(1).
Wu, Yunfan, et al. “Retrieval of Cavity-Generated Atomic Spin Squeezing after Free-Space Release.” Physical Review A, vol. 102, no. 1, 012224, APS, 2020, doi:10.1103/PhysRevA.102.012224.
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