Abstract
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.
| Original language | English (US) |
|---|---|
| Article number | 110502 |
| Journal | Physical Review Letters |
| Volume | 94 |
| Issue number | 11 |
| DOIs | |
| State | Published - Mar 25 2005 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Robust one-step catalytic machine for high fidelity anticloning and W-state generation in a multiqubit system. / Olaya-Castro, Alexandra; Johnson, Neil F; Quiroga, Luis.
In: Physical Review Letters, Vol. 94, No. 11, 110502, 25.03.2005.Research output: Contribution to journal › Article
}
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
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.
UR - http://www.scopus.com/inward/record.url?scp=18144420438&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18144420438&partnerID=8YFLogxK
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 -