We show how a squeezed bath can be obtained by means of a suitable feedback of the output signal corresponding to a Quantum Non-Demolition (QND) measurement of an observable. We also show that a quantum non-demolition mediated feedback is able to preserve the interference fringes of the superposition of macroscopically distinguishable quantum states.

Optical feedback from quantum non-demolition measurements: How to realize a measurement apparatus to observe macroscopic quantum coherence

TOMBESI, Paolo;VITALI, David
1995

Abstract

We show how a squeezed bath can be obtained by means of a suitable feedback of the output signal corresponding to a Quantum Non-Demolition (QND) measurement of an observable. We also show that a quantum non-demolition mediated feedback is able to preserve the interference fringes of the superposition of macroscopically distinguishable quantum states.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11581/242175
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