A Scheme to Probe the Decoherence of a Macroscopic Object
arXiv:quant-ph/9712017 · doi:10.1103/PhysRevA.59.3204
Abstract
We propose a quantum optical version of Schrödinger's famous gedanken experiment in which the state of a microscopic system (a cavity field) becomes entangled with and disentangled from the state of a massive object (a movable mirror). Despite the fact that a mixture of Schrödinger cat states is produced during the evolution (due to the fact that the macroscopic mirror starts off in a thermal state), this setup allows us to systematically probe the rules by which a superposition of spatially separated states of a macroscopic object decoheres. The parameter regime required to test environment-induced decoherence models is found to be close to those currently realizable, while that required to detect gravitationally induced collapse is well beyond current technology.
Much expanded version, macroscopic mirror masses, to appear in Phys. Rev. A (tent: May 99)
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