TY - JOUR
T1 - Robust one-step catalytic machine for high fidelity anticloning and W-state generation in a multiqubit system
AU - Olaya-Castro, Alexandra
AU - Johnson, Neil F.
AU - Quiroga, Luis
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2005/3/25
Y1 - 2005/3/25
N2 - We propose a physically realizable machine which can either generate multiparticle W-like states, or implement high-fidelity 1 → M (M = 1, 2, ∞) anticloning of an arbitrary qubit state, in a single step. This universal machine acts as a catalyst in that it is unchanged after either procedure, effectively resetting itself for its next operation. It possesses an inherent immunity to decoherence. Most importantly in terms of practical multiparty quantum communication, the machine's robustness in the presence of decoherence actually increases as the number of qubits M increases.
AB - We propose a physically realizable machine which can either generate multiparticle W-like states, or implement high-fidelity 1 → M (M = 1, 2, ∞) anticloning of an arbitrary qubit state, in a single step. This universal machine acts as a catalyst in that it is unchanged after either procedure, effectively resetting itself for its next operation. It possesses an inherent immunity to decoherence. Most importantly in terms of practical multiparty quantum communication, the machine's robustness in the presence of decoherence actually increases as the number of qubits M increases.
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U2 - 10.1103/PhysRevLett.94.110502
DO - 10.1103/PhysRevLett.94.110502
M3 - Article
AN - SCOPUS:18144420438
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 110502
ER -