dorsal/arxiv
View SchemaTesting Quantum Dynamics using Signaling
| Authors | Aditi Sen De, Ujjwal Sen |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0401186 |
| URL | https://arxiv.org/abs/quant-ph/0401186 |
| DOI | 10.1103/PhysRevA.72.014304 |
| Journal | Phys. Rev. A 72, 014304 (2005) |
Abstract
We consider a physical system in which the description of states and measurements follow the usual quantum mechanical rules. We also assume that the dynamics is linear, but may not be fully quantum (i.e unitary). We show that in such a physical system, certain complementary evolutions, namely cloning and deleting operations that give a better fidelity than quantum mechanically allowed ones, in one (inaccessible) region, lead to signaling to a far-apart (accessible) region. To show such signaling, one requires certain two-party quantum correlated states shared between the two regions. Subsequent measurements are performed only in the accessible part to detect such phenomenon.
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"abstract": "We consider a physical system in which the description of states and\nmeasurements follow the usual quantum mechanical rules. We also assume that the\ndynamics is linear, but may not be fully quantum (i.e unitary). We show that in\nsuch a physical system, certain complementary evolutions, namely cloning and\ndeleting operations that give a better fidelity than quantum mechanically\nallowed ones, in one (inaccessible) region, lead to signaling to a far-apart\n(accessible) region. To show such signaling, one requires certain two-party\nquantum correlated states shared between the two regions. Subsequent\nmeasurements are performed only in the accessible part to detect such\nphenomenon.",
"arxiv_id": "quant-ph/0401186",
"authors": [
"Aditi Sen De",
"Ujjwal Sen"
],
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"quant-ph"
],
"doi": "10.1103/PhysRevA.72.014304",
"journal_ref": "Phys. Rev. A 72, 014304 (2005)",
"title": "Testing Quantum Dynamics using Signaling",
"url": "https://arxiv.org/abs/quant-ph/0401186"
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