dorsal/arxiv
View SchemaA robust one-step catalytic machine for high fidelity anti-cloning and W-state generation in a multi-qubit system
| Authors | Alexandra Olaya-Castro, Neil F. Johnson, Luis Quiroga |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409104 |
| URL | https://arxiv.org/abs/quant-ph/0409104 |
| DOI | 10.1103/PhysRevLett.94.110502 |
Abstract
We propose a physically realizable machine which can either generate multiparticle W-like states, or implement high fidelity $1 \to M$ ($M=1,2,... \infty$) anti-cloning of an arbitrary qubit state, in a single step. Moreover this universal machine acts as a catalyst in that it is unchanged after either procedure, effectively resetting itself for its next operation. It also possesses an inherent {\em immunity} to decoherence. Most importantly in terms of practical multi-party quantum communication, the machine's robustness in the presence of decoherence actually {\em increases} as the number of qubits $M$ increases.
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"abstract": "We propose a physically realizable machine which can either generate\nmultiparticle W-like states, or implement high fidelity $1 \\to M$ ($M=1,2,...\n\\infty$) anti-cloning of an arbitrary qubit state, in a single step. Moreover\nthis universal machine acts as a catalyst in that it is unchanged after either\nprocedure, effectively resetting itself for its next operation. It also\npossesses an inherent {\\em immunity} to decoherence. Most importantly in terms\nof practical multi-party quantum communication, the machine\u0027s robustness in the\npresence of decoherence actually {\\em increases} as the number of qubits $M$\nincreases.",
"arxiv_id": "quant-ph/0409104",
"authors": [
"Alexandra Olaya-Castro",
"Neil F. Johnson",
"Luis Quiroga"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.94.110502",
"title": "A robust one-step catalytic machine for high fidelity anti-cloning and W-state generation in a multi-qubit system",
"url": "https://arxiv.org/abs/quant-ph/0409104"
},
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