dorsal/arxiv
View SchemaCorrecting quantum channels by measuring the environment
| Authors | Patrick Hayden, Christopher King |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409026 |
| URL | https://arxiv.org/abs/quant-ph/0409026 |
| Journal | Quantum Information and Computation 5(2):156-160, 2005. |
Abstract
The corrected capacity of a quantum channel is defined as the best one-shot capacity that can be obtained by measuring the environment and using the result to correct the output of the channel. It is shown that (i) all qubit channels have corrected capacity log 2, (ii) a product of N qubit channels has corrected capacity N log 2, and (iii) all channels have corrected capacity at least log 2. The question is posed of finding the channel with smallest corrected capacity in any dimension d.
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"abstract": "The corrected capacity of a quantum channel is defined as the best one-shot\ncapacity that can be obtained by measuring the environment and using the result\nto correct the output of the channel. It is shown that (i) all qubit channels\nhave corrected capacity log 2, (ii) a product of N qubit channels has corrected\ncapacity N log 2, and (iii) all channels have corrected capacity at least log\n2. The question is posed of finding the channel with smallest corrected\ncapacity in any dimension d.",
"arxiv_id": "quant-ph/0409026",
"authors": [
"Patrick Hayden",
"Christopher King"
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"journal_ref": "Quantum Information and Computation 5(2):156-160, 2005.",
"title": "Correcting quantum channels by measuring the environment",
"url": "https://arxiv.org/abs/quant-ph/0409026"
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