dorsal/arxiv
View SchemaSix-qubit permutation-based decoherence-free orthogonal basis
| Authors | Adan Cabello |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0702118 |
| URL | https://arxiv.org/abs/quant-ph/0702118 |
| DOI | 10.1103/PhysRevA.75.020301 |
| Journal | Phys. Rev. A 75 (2007) 020301(R) |
Abstract
There is a natural orthogonal basis of the 6-qubit decoherence-free (DF) space robust against collective noise. Interestingly, most of the basis states can be obtained from one another just permuting qubits. This property: (a) is useful for encoding qubits in DF subspaces, (b) allows the implementation of the Bennett-Brassard 1984 (BB84) protocol in DF subspaces just permuting qubits, which completes a the method for quantum key distribution using DF states proposed by Boileau et al. [Phys. Rev. Lett. 92, 017901 (2004)], and (c) points out that there is only one 6-qubit DF state which is essentially new (not obtained by permutations) and therefore constitutes an interesting experimental challenge.
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"abstract": "There is a natural orthogonal basis of the 6-qubit decoherence-free (DF)\nspace robust against collective noise. Interestingly, most of the basis states\ncan be obtained from one another just permuting qubits. This property: (a) is\nuseful for encoding qubits in DF subspaces, (b) allows the implementation of\nthe Bennett-Brassard 1984 (BB84) protocol in DF subspaces just permuting\nqubits, which completes a the method for quantum key distribution using DF\nstates proposed by Boileau et al. [Phys. Rev. Lett. 92, 017901 (2004)], and (c)\npoints out that there is only one 6-qubit DF state which is essentially new\n(not obtained by permutations) and therefore constitutes an interesting\nexperimental challenge.",
"arxiv_id": "quant-ph/0702118",
"authors": [
"Adan Cabello"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.75.020301",
"journal_ref": "Phys. Rev. A 75 (2007) 020301(R)",
"title": "Six-qubit permutation-based decoherence-free orthogonal basis",
"url": "https://arxiv.org/abs/quant-ph/0702118"
},
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