Olaya-Castro, A;
Johnson, NF;
Quiroga, L;
(2005)
Robust one-step catalytic machine for high fidelity anticloning and W-state generation in a multiqubit system.
PHYS REV LETT
, 94
(11)
, Article 110502. 10.1103/PhysRevlett.94.110502.
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Abstract
We propose a physically realizable machine which can either generate multiparticle W-like states, or implement high-fidelity 1 -> M (M=1,2,(...)infinity) 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.
| Type: | Article |
|---|---|
| Title: | Robust one-step catalytic machine for high fidelity anticloning and W-state generation in a multiqubit system |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevlett.94.110502 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevlett.94.110502 |
| Language: | English |
| Additional information: | © 2005 The American Physical Society |
| Keywords: | CAVITY QUANTUM ELECTRODYNAMICS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/136883 |
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