Unifying Decoherence and the Heisenberg Principle

Details Unifying Decoherence and the Heisenberg Principle Unifying Decoherence and the Heisenberg Principle

2006-06-10

arxiv.org/abs/quant-ph/0606093v1

Physics

Quantum Physics

17 pages, 7 figures

Scientific paper

We exhibit three inequalities involving quantum measurement, all of which are sharp and state independent. The first inequality bounds the performance of joint measurement. The second quantifies the trade-off between the measurement quality and the disturbance caused on the measured system. Finally, the third inequality provides a sharp lower bound on the amount of decoherence in terms of the measurement quality. This gives a unified discription of both the Heisenberg principle and the collapse of the wave function.

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