Studying Dynamics of Macroscopic Quantum Entanglement with Future Advanced Gravitational-Wave Detectors

Авторы: Kiriukhin O.M., Miao H., Chen Y.
Журнал: LIGO Document
Номер: T1200333
Год издания: 2012
Аннотация: Future advanced gravitational-wave detectors will reach such high sensitivity that they possibly allow us to study quantum behaviors of the macroscopic test masses. One interesting issue, which is also of fundamental importance, is the observation of the Einstein-Podolsky-Rosen-type of quantum entanglement among macroscopic objects, for example, the kilogramscale test masses. We explore quantum dynamics of entanglement and study the possibility of observing it with future advanced gravitational-wave detectors or prototypes. In particular, we theoretically evaluate the characteristic lifetime of macroscopic entangled states under thermal decoherence in realistic setups and analyze its dependence on the different parameters of the system. In this work we consider a system being under the continuous measurements and study the dynamics of quantum entanglement for the conditional quantum state. In order to obtain the conditional expectations we apply filtering approach which is a technique of minimization of error dispersion. Filter gives the best possible estimation of the variable by measurements with incomplete information and noise in the system being under the disturbance of an uncontrolled stochastic process.
Добавил в систему: Кирюхин Олег Михайлович

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