Efficient generation of many-body singlet states of spin-1 bosons in optical superlattices

Huanying Sun, Peng Xu, Han Pu, and Wenxian Zhang
Phys. Rev. A 95, 063624 – Published 29 June 2017

Abstract

We propose an efficient stepwise adiabatic merging (SAM) method to generate many-body singlet states in antiferromagnetic spin-1 bosons in concatenated optical superlattices with isolated double-well arrays, by adiabatically ramping up the double-well bias. With an appropriate choice of bias sweeping rate and magnetic field, the SAM protocol predicts a fidelity as high as 90% for a 16-body singlet state and even higher fidelities for smaller even-body singlet states. During their evolution, the spin-1 bosons exhibit interesting squeezing dynamics, manifested by an odd-even oscillation of the experimentally observable squeezing parameter. The generated many-body singlet states may find practical applications in precision measurement of magnetic field gradient and in quantum information processing.

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  • Received 6 February 2017

DOI:https://doi.org/10.1103/PhysRevA.95.063624

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Huanying Sun1, Peng Xu1, Han Pu2, and Wenxian Zhang1,*

  • 1School of Physics and Technology, Wuhan University, Wuhan, Hubei 430072, China
  • 2Department of Physics and Astronomy, and Rice Center for Quantum Materials, Rice University, Houston, Texas 77251, USA

  • *wxzhang@whu.edu.cn

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Vol. 95, Iss. 6 — June 2017

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