dorsal/arxiv
View SchemaEntanglement production by quantum error correction in the presence of correlated environment
| Authors | G. De Chiara, R. Fazio, C. Macchiavello, G. M. Palma |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310173 |
| URL | https://arxiv.org/abs/quant-ph/0310173 |
| DOI | 10.1209/epl/i2004-10118-5 |
| Journal | Europhys. Lett. 67, 714 (2004) |
Abstract
We analyze the effect of a quantum error correcting code on the entanglement of encoded logical qubits in the presence of a dephasing interaction with a correlated environment. Such correlated reservoir introduces entanglement between physical qubits. We show that for short times the quantum error correction interprets such entanglement as errors and suppresses it. However for longer time, although quantum error correction is no longer able to correct errors, it enhances the rate of entanglement production due to the interaction with the environment.
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"abstract": "We analyze the effect of a quantum error correcting code on the entanglement\nof encoded logical qubits in the presence of a dephasing interaction with a\ncorrelated environment. Such correlated reservoir introduces entanglement\nbetween physical qubits. We show that for short times the quantum error\ncorrection interprets such entanglement as errors and suppresses it. However\nfor longer time, although quantum error correction is no longer able to correct\nerrors, it enhances the rate of entanglement production due to the interaction\nwith the environment.",
"arxiv_id": "quant-ph/0310173",
"authors": [
"G. De Chiara",
"R. Fazio",
"C. Macchiavello",
"G. M. Palma"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1209/epl/i2004-10118-5",
"journal_ref": "Europhys. Lett. 67, 714 (2004)",
"title": "Entanglement production by quantum error correction in the presence of correlated environment",
"url": "https://arxiv.org/abs/quant-ph/0310173"
},
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