Time Evolution of Harmonic Oscillator Thermal Momentum Superposition States

Details Time Evolution of Harmonic Oscillator Thermal Momentum Superposition States Time Evolution of Harmonic Oscillator Thermal Momentum Superposition States

2011-09-09

arxiv.org/abs/1109.1818v1

Physics

Quantum Physics

6 pages 4 figures

Scientific paper

The time evolution of thermal states of a mirror released from a tight harmonic trap is studied. After the release no dissipation is assumed to be present and the mirror is, after a time delay, kicked into a momentum superposition state. The thermal character of the initial state washes out the telltale interference patterns of the superposition but no loss of coherence is found. This investigation resolves a controversy about decoherence--without--dissipation and shows that entrained measurements can be surprisingly insensitive to temperature effects.

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