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

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 sixteen-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.

8 pages, 8 figures, submitted to Phys. Rev. A

References in corpus (9)

• Quantum Simulation of Antiferromagnetic Spin Chains in an Optical Lattice
• Shortcut to adiabatic passage in two and three level atoms
• High-Resolution Magnetometry with a Spinor Bose-Einstein Condensate
• Number squeezing, quantum fluctuations and oscillations in mesoscopic Bose Josephson junctions
• Antiferromagnetic spinor condensates in a two-dimensional optical lattice
• Experimental Demonstration of Decoherence-Free One-Way Information Transfer
• The single-atom box: bosonic staircase and effects of parity
• Many-body singlets by dynamic spin polarization
• Ground-states of spin-1 bosons in asymmetric double-wells

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