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Continuous measurement feedback control of a Bose-Einstein condensate using phase-contrast imaging

Szigeti, Stuart; Hush, Michael; Carvalho, Andre; Hope, Joseph


We consider the theory of feedback control of a Bose-Einstein condensate (BEC) confined in a harmonic trap under a continuous measurement constructed via nondestructive imaging. A filtering theory approach is used to derive a stochastic master equation (SME) for the system from a general Hamiltonian based upon system-bath coupling. Numerical solutions for this SME in the limit of a single atom show that the final steady-state energy is dependent upon the measurement strength, the ratio of...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.80.013614


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