Decoherence of Fock States Leads to a Maximally Quantum State

Details Decoherence of Fock States Leads to a Maximally Quantum State Decoherence of Fock States Leads to a Maximally Quantum State

2010-07-27

arxiv.org/abs/1007.4618v1

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

We consider the Wigner function evolution of Fock states $|n\rangle$ linearly coupled to a Markovian bath of oscillators. In the absence of environmental coupling, apparent ``quantumness'' increases with $n$, but the presence of any environmental interaction causes high-$n$ states to lose their quantum features more rapidly than low-$n$ states. Using the negative volume of the Wigner function as a metric \cite{kenfack04}, we observe a time-dependent quantumness peak across the eigenstates.

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