dorsal/arxiv
View SchemaEntropic information-disturbance tradeoff
| Authors | Lorenzo Maccone |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0604038 |
| URL | https://arxiv.org/abs/quant-ph/0604038 |
| DOI | 10.1209/0295-5075/77/40002 |
| Journal | Europhys. Lett. 77, 40002 (2007) |
Abstract
We show the flaws found in the customary fidelity-based definitions of disturbance in quantum measurements and evolutions. We introduce the "entropic disturbance" D and show that it adequately measures the degree of disturbance, intended essentially as an irreversible change in the state of the system. We also find that it complies with an information-disturbance tradeoff, namely the mutual information between the eigenvalues of the initial state and the measurement results is less than or equal to D.
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"abstract": "We show the flaws found in the customary fidelity-based definitions of\ndisturbance in quantum measurements and evolutions. We introduce the \"entropic\ndisturbance\" D and show that it adequately measures the degree of disturbance,\nintended essentially as an irreversible change in the state of the system. We\nalso find that it complies with an information-disturbance tradeoff, namely the\nmutual information between the eigenvalues of the initial state and the\nmeasurement results is less than or equal to D.",
"arxiv_id": "quant-ph/0604038",
"authors": [
"Lorenzo Maccone"
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"doi": "10.1209/0295-5075/77/40002",
"journal_ref": "Europhys. Lett. 77, 40002 (2007)",
"title": "Entropic information-disturbance tradeoff",
"url": "https://arxiv.org/abs/quant-ph/0604038"
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