Information propagation in a quantum system. Examples of open spin-1/2 chains

Details Information propagation in a quantum system. Examples of open spin-1/2 chains Information propagation in a quantum system. Examples of open spin-1/2 chains

2011-10-21

arxiv.org/abs/1110.4771v3

J. Phys. A: Math. Theor. V. 45 (2012) 115306(11pp)

Physics

Quantum Physics

13 pages, 1 figure

Scientific paper

If the information is encoded into the state of the subsystem $S$ of a quantum system initially (at $t=0$), then it becomes distributed over the whole quantum system at $t>0$ due to the quantum interactions. Consequently, this information, in general, can be extracted, either completely or partially, from any subsystem of a quantum system. {We suggest a method of extraction of information, which is based on the polarization measurements on the receiver $R$}.

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