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- W3174242259 abstract "We propose a protocol for generating Schrodinger cat states of the Greenberger-Horne-Zeilinger (GHZ) variety using ultracold fermions in 3D optical lattices or optical tweezer arrays. The protocol uses the interplay between laser driving, onsite interactions and external trapping confinement to enforce energetic spin- and position-dependent constraints on the atomic motion. These constraints allow us to transform a local superposition into a cat state through a stepwise protocol that flips one site at a time. The protocol requires no site-resolved drives or spin-dependent potentials, exhibits robustness to slow global laser phase drift, and naturally makes use of the harmonic trap that would normally cause difficulties for entanglement-generating protocols in optical lattices. We also discuss an improved protocol that can compensate for holes in the loadout at the cost of increased generation time. The cat state can immediately be used for quantum enhanced metrology in 3D optical lattice atomic clocks, opening a window to push the sensitivity of state-of-the-art sensors beyond the standard quantum limit." @default.
- W3174242259 created "2021-07-05" @default.
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- W3174242259 date "2019-12-12" @default.
- W3174242259 modified "2023-09-27" @default.
- W3174242259 title "Generating cat states with fermionic atoms in a driven optical lattice" @default.
- W3174242259 hasPublicationYear "2019" @default.
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