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Rebuilding of destroyed spin squeezing in noisy environments.

ABSTRACT: We investigate the process of spin squeezing in a ferromagnetic dipolar spin-1 Bose-Einstein condensate under the driven one-axis twisting scheme, with emphasis on the detrimental effect of noisy environments (stray magnetic fields) which completely destroy the spin squeezing. By applying concatenated dynamical decoupling pulse sequences with a moderate bias magnetic field to suppress the effect of the noisy environments, we faithfully reconstruct the spin squeezing process under realistic experimental conditions. Our noise-resistant method is ready to be employed to generate the spin squeezed state in a dipolar spin-1 Bose-Einstein condensate and paves a feasible way to the Heisenberg-limit quantum metrology.

SUBMITTER: Xu P

PROVIDER: S-EPMC5658406 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Rebuilding of destroyed spin squeezing in noisy environments.

Xu Peng P Sun Huanying H Yi S S Zhang Wenxian W

Scientific reports 20171026 1

We investigate the process of spin squeezing in a ferromagnetic dipolar spin-1 Bose-Einstein condensate under the driven one-axis twisting scheme, with emphasis on the detrimental effect of noisy environments (stray magnetic fields) which completely destroy the spin squeezing. By applying concatenated dynamical decoupling pulse sequences with a moderate bias magnetic field to suppress the effect of the noisy environments, we faithfully reconstruct the spin squeezing process under realistic exper ...[more]

PMID: 29074937

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