dorsal/arxiv
View SchemaGeneralized measurements via programmable quantum processor
| Authors | Marian Rosko, Vladimir Buzek, Paul Robert Chouha, Mark Hillery |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0311172 |
| URL | https://arxiv.org/abs/quant-ph/0311172 |
| DOI | 10.1103/PhysRevA.68.062302 |
Abstract
We show that it is possible to control the trade-off between information gain and disturbance in generalized measurements of qudits by utilizing the programmable quantum processor. This universal quantum machine allows us to perform a generalized measurement on the initial state of the input qudit to construct a Husimi function of this state. The trade-off between the gain and the disturbance of the qudit is controlled by the initial state of ancillary system that acts as a program register for the quantum-information distributor. The trade-off fidelity does not depend on the initial state of the qudit.
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"abstract": "We show that it is possible to control the trade-off between information gain\nand disturbance in generalized measurements of qudits by utilizing the\nprogrammable quantum processor. This universal quantum machine allows us to\nperform a generalized measurement on the initial state of the input qudit to\nconstruct a Husimi function of this state. The trade-off between the gain and\nthe disturbance of the qudit is controlled by the initial state of ancillary\nsystem that acts as a program register for the quantum-information distributor.\nThe trade-off fidelity does not depend on the initial state of the qudit.",
"arxiv_id": "quant-ph/0311172",
"authors": [
"Marian Rosko",
"Vladimir Buzek",
"Paul Robert Chouha",
"Mark Hillery"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.68.062302",
"title": "Generalized measurements via programmable quantum processor",
"url": "https://arxiv.org/abs/quant-ph/0311172"
},
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