A delta-kick focusing step applied to a BEC before one-axis twisting enhances spin squeezing and yields a fourfold improvement in phase sensitivity for quantum gravimetry, surpassing the SQL by a factor of ~20.
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Theoretical proposal for cavity-based momentum-state spin squeezing in Bragg interferometers that models momentum width and off-manifold coupling and predicts feasible squeezing levels with current technology.
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Enhanced squeezing for quantum gravimetry in a Bose-Einstein condensate with focussing
A delta-kick focusing step applied to a BEC before one-axis twisting enhances spin squeezing and yields a fourfold improvement in phase sensitivity for quantum gravimetry, surpassing the SQL by a factor of ~20.
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Squeezed state metrology with Bragg interferometers operating in a cavity
Theoretical proposal for cavity-based momentum-state spin squeezing in Bragg interferometers that models momentum width and off-manifold coupling and predicts feasible squeezing levels with current technology.