dorsal/arxiv
View SchemaEfficient Schemes for Reducing Imperfect Collective Decoherences
| Authors | W. Y. Hwang, H. J. Lee, D. Ahn, S. W. Hwang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0008050 |
| URL | https://arxiv.org/abs/quant-ph/0008050 |
| DOI | 10.1103/PhysRevA.62.062305 |
| Journal | Phys. Rev. A 62, 062305 (2000) |
Abstract
We propose schemes that are efficient when each pair of qubits undergoes some imperfect collective decoherence with different baths. In the proposed scheme, each pair of qubits is first encoded in a decoherence-free subspace composed of two qubits. Leakage out of the encoding space generated by the imperfection is reduced by the quantum Zeno effect. Phase errors in the encoded bits generated by the imperfection are reduced by concatenation of the decoherence-free subspace with either a three-qubit quantum error correcting code that corrects only phase errors or a two-qubit quantum error detecting code that detects only phase errors, connected with the quantum Zeno effect again.
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"abstract": "We propose schemes that are efficient when each pair of qubits undergoes some\nimperfect collective decoherence with different baths. In the proposed scheme,\neach pair of qubits is first encoded in a decoherence-free subspace composed of\ntwo qubits. Leakage out of the encoding space generated by the imperfection is\nreduced by the quantum Zeno effect. Phase errors in the encoded bits generated\nby the imperfection are reduced by concatenation of the decoherence-free\nsubspace with either a three-qubit quantum error correcting code that corrects\nonly phase errors or a two-qubit quantum error detecting code that detects only\nphase errors, connected with the quantum Zeno effect again.",
"arxiv_id": "quant-ph/0008050",
"authors": [
"W. Y. Hwang",
"H. J. Lee",
"D. Ahn",
"S. W. Hwang"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.62.062305",
"journal_ref": "Phys. Rev. A 62, 062305 (2000)",
"title": "Efficient Schemes for Reducing Imperfect Collective Decoherences",
"url": "https://arxiv.org/abs/quant-ph/0008050"
},
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