dorsal/arxiv
View SchemaClassical and quantum: some mutual clarifications
| Authors | Valerio Scarani |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0309113 |
| URL | https://arxiv.org/abs/quant-ph/0309113 |
Abstract
This paper presents two unconventional links between quantum and classical physics. The first link appears in the study of quantum cryptography. In the presence of a spy, the quantum correlations shared by Alice and Bob are imperfect. One can either process the quantum information, recover perfect correlations and finally measure the quantum systems; or, one can perform the measurements first and then process the classical information. These two procedures tolerate exactly the same error rate for a wide class of attacks by the spy. The m second link is drawn between the quantum notions of "no-cloning theorem" and "weak-measurements with post-selection", and simple experiments using classical polarized light and ordinary telecom devices.
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"abstract": "This paper presents two unconventional links between quantum and classical\nphysics. The first link appears in the study of quantum cryptography. In the\npresence of a spy, the quantum correlations shared by Alice and Bob are\nimperfect. One can either process the quantum information, recover perfect\ncorrelations and finally measure the quantum systems; or, one can perform the\nmeasurements first and then process the classical information. These two\nprocedures tolerate exactly the same error rate for a wide class of attacks by\nthe spy. The m second link is drawn between the quantum notions of \"no-cloning\ntheorem\" and \"weak-measurements with post-selection\", and simple experiments\nusing classical polarized light and ordinary telecom devices.",
"arxiv_id": "quant-ph/0309113",
"authors": [
"Valerio Scarani"
],
"categories": [
"quant-ph"
],
"title": "Classical and quantum: some mutual clarifications",
"url": "https://arxiv.org/abs/quant-ph/0309113"
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