Measurement of energy eigenstates by a slow detector

Abstract

We propose a method for a weak continuous measurement of the energy eigenstates of a fast quantum system by means of a "slow" detector. Such a detector is only sensitive to slowly-changing variables, e. g. energy, while its back-action can be limited solely to decoherence of the eigenstate superpositions. We apply this scheme to the problem of detection of quantum jumps between energy eigenstates in a harmonic oscillator.

4 pages

References in corpus (1)

• Quantum-Limited Position Detection and Amplification: A Linear Response Perspective

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