dorsal/arxiv
View SchemaThe Quantum Governor: Automatic quantum control and reduction of the influence of noise without measuring
| Authors | S. Kallush, R. Kosloff |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0511199 |
| URL | https://arxiv.org/abs/quant-ph/0511199 |
| DOI | 10.1103/PhysRevA.73.032324 |
Abstract
The problem of automatically protecting a quantum system against noise in a closed circuit is analyzed. A general scheme is developed built from two steps. At first, a distillation step is induced in which undesired components are removed to another degree of freedom of the system. Later a recovering step is employed which the system gains back its initial density. An Optimal-Control method is used to generate the distilling operator. The scheme is demonstrated by a simulation of a two level byte influenced by white noise. Undesired deviations from the target were shown to be reduced by at least two orders of magnitude on average. The relations between the quantum version of the classical Watt's Governor and the field of quantum information are also discussed.
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"abstract": "The problem of automatically protecting a quantum system against noise in a\nclosed circuit is analyzed. A general scheme is developed built from two steps.\nAt first, a distillation step is induced in which undesired components are\nremoved to another degree of freedom of the system. Later a recovering step is\nemployed which the system gains back its initial density. An Optimal-Control\nmethod is used to generate the distilling operator. The scheme is demonstrated\nby a simulation of a two level byte influenced by white noise. Undesired\ndeviations from the target were shown to be reduced by at least two orders of\nmagnitude on average. The relations between the quantum version of the\nclassical Watt\u0027s Governor and the field of quantum information are also\ndiscussed.",
"arxiv_id": "quant-ph/0511199",
"authors": [
"S. Kallush",
"R. Kosloff"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.73.032324",
"title": "The Quantum Governor: Automatic quantum control and reduction of the influence of noise without measuring",
"url": "https://arxiv.org/abs/quant-ph/0511199"
},
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