Quantum Error Correction
Years and Authors of Summarized Original Work
A quantum system can never be seen as being completely isolated from its environment, thereby permanently causing disturbance to the state of the system. The resulting noise problem threatens quantum computers and their great promise, namely, to provide a computational advantage over classical computers for certain problems (see also the cross-references in the section “Cross-References”). Quantum noise is usually modeled by the notion of a quantum channel which generalizes the classical case and, in particular, includes scenarios for communication (space) and storage (time) of quantum information. For more information about quantum channels and quantum information in general, see . A basic channel is the quantum mechanical analog of the classical binary symmetric channel . This quantum channel is called the depolarizing channel and depends on a real parameter p ∈ [0, 1]. Its effect is to randomly...
KeywordsQuantum codes Quantum error-correcting codes Stabilizer codes
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