Journal of East China Normal University(Natural Science) ›› 2022, Vol. 2022 ›› Issue (2): 93-105.doi: 10.3969/j.issn.1000-5641.2022.02.011

• Physics and Electronics • Previous Articles     Next Articles

Optically mediated entanglement between Bose-Einstein condensates

Shuai GAO1, Matthew PREST1,2, Ebubechukwu O. ILO-OKEKE2,3, Manikandan KONDAPPAN4, Juan E. ARISTIZABAL-ZULUAGA1,2, Valentin IVANNIKOV1,5,6,7, Tim BYRNES1,5,6,7,*()   

  1. 1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
    2. Department of Physics, New York University Shanghai, Shanghai 200122, China
    3. Department of Physics, School of Science, Federal University of Technology, Imo State 460001, Nigeria
    4. Department of Precision Science and Natural Sciences, Institute of Physics, Universidad de Antioquia UdeA, Medellín 05001000, Colombia
    5. NYU-ECNU Institute of Physics at NYU Shanghai, Shanghai 200062, China
    6. National Institute of Informatics, Tokyo 101-8430, Japan
    7. Department of Physics, New York University, New York, NY 10003, USA
  • Received:2021-02-19 Online:2022-03-25 Published:2022-03-28
  • Contact: Tim BYRNES


This paper explores a method for generating optically mediated entanglement between Bose-Einstein condensates (BECs). Using a quantum nondemolition Hamiltonian with BECs placed in a Mach-Zehnder configuration, it is shown that entangled states can be induced by performing measurement on light. In particular, the effects of the entangled state in the presence of decoherence were analyzed. The behavior of the entangled state was found to be sensitive to the atom-light interaction time. The entangled state is relatively stable when the dimensionless interaction time $ \tau \lesssim \frac{1}{\sqrt{N}} $ and relatively fragile when the time is greater.

Key words: Bose-Einstein condensate, quantum nondemolition measurement, two-spin entangled state, decoherence

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