Quantum control by compensation of quantum fluctuations

Abstract

We show that the influence of quantum fluctuations in the electromagnetic field vacuum on a two level atom can be measured and consequently compensated by balanced homodyne detection and a coherent feedback field. This compensation suppresses the decoherence associated with spontaneous emission for a specific state of the atomic system allowing complete control of the coherent state of the system.

5 pages RevTex and 2 figures, to be published in Optics Express

References in corpus (1)

• Measurement models for time-resolved spectroscopy: a comment

Cited by in corpus (8)

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• Non-Markovian homodyne-mediated feedback on a two-level atom: a quantum trajectory treatment
• Simulation of interaction Hamiltonians by quantum feedback: a comment on the dynamics of information exchange between coupled systems
• Optimal measurement-based feedback control for a single qubit: a candidate protocol