Quantum measurement and the quantum to classical transition in a non-linear quantum oscillator
Mark Everitt
W.J. Munro
T.P. Spiller
2134/12055
https://repository.lboro.ac.uk/articles/journal_contribution/Quantum_measurement_and_the_quantum_to_classical_transition_in_a_non-linear_quantum_oscillator/9408344
We study a non-linear quantum mechanical oscillator, acting as a measurement device. Candidate systems for realising such apparatus range from superconducting devices through to nano-mechanical resonators. The measurement device comprises an oscillator circuit where the dynamics of expectation values, in its correspondence limit, are either chaotic-like or periodic depending on the measured state of the quantum object – in this case a qubit. In a previous work we showed how the classical like trajectories of such a quantum system can act as a model of a projective measurement process. Here we investigate the quantum to classical transition of the measurement device and postulate criteria for realisation of an effective implementation of such a device.
2013-04-05 13:08:21
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Physical Sciences not elsewhere classified