Strictly contractive quantum channels and physically realizable quantum computers
نویسندگان
چکیده
منابع مشابه
Strictly contractive quantum channels and physically realizable quantum computers
We study the robustness of quantum computers under the influence of errors modelled by strictly contractive channels. A channel T is defined to be strictly contractive if, for any pair of density operators ρ, σ in its domain, ‖Tρ− Tσ‖1 ≤ k ‖ρ− σ‖1 for some 0 ≤ k < 1 (here ‖·‖1 denotes the trace norm). In other words, strictly contractive channels render the states of the computer less distingui...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2002
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.65.032306