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

Abstract

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 $R$}.

13 pages, 1 figure

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Cited by in corpus (9)

• Pretty good state transfer of entangled states through quantum spin chains
• Remote creation of a one-qubit mixed state through a short homogeneous spin-1/2 chain
• Robustness of spin-chain state-transfer schemes
• Partial structural restoring of two-qubit transferred state
• Optimal remote restoring of quantum states in communication lines via local magnetic field
• Temperature-dependent remote control of polarization and coherence intensity with pure sender's initial state
• Pretty Good State Transfer and Minimal Polynomials
• Remote control of quantum correlations in two-qubit receiver via three-qubit sender
• Coherence restoring in communication line via controlled interaction with environment