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Journal Article

Quantum Uniqueness

MPS-Authors
/persons/resource/persons201208

Sych,  Denis
Optics Theory Group, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201115

Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Sych, D., & Leuchs, G. (2015). Quantum Uniqueness. FOUNDATIONS OF PHYSICS, 45(12), 1613-1619. doi:10.1007/s10701-015-9947-9.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6342-6
Abstract
Classical physics allows for the existence of pairs of absolutely identical systems. Pairwise application of identical measurements to each of those systems always leads to exactly alike results irrespectively of the choice of measurements. Here we ask a question how the picture looks like in the quantum domain. Surprisingly, we get a counterintuitive outcome. Pairwise application of identical (but a priori unknown) measurements cannot always lead to exactly alike results. We interpret this as quantum uniqueness-a feature that has no classical analog.