The technologies of quantum information and quantum control are rapidly improving, but full exploitation of their capabilities requires complete characterization and assessment of processes that occur within quantum devices. We present a method for characterizing, with arbitrarily high accuracy, any quantum optical process. Our protocol recovers complete knowledge of the process by studying, via homodyne tomography, its effect on a set of coherent states, that is, classical fields produced by common laser sources. We demonstrate the capability of our protocol by evaluating and experimentally verifying the effect of a test process on squeezed vacuum.

Complete characterization of quantum-optical processes / Lobino, M.; Korystov, D.; Kupchak, C.; Figueroa, E.; Sanders, B. C.; Lvovsky, A. I.. - In: SCIENCE. - ISSN 0036-8075. - 322:5901(2008), pp. 563-566. [10.1126/science.1162086]

Complete characterization of quantum-optical processes

Lobino M.;
2008-01-01

Abstract

The technologies of quantum information and quantum control are rapidly improving, but full exploitation of their capabilities requires complete characterization and assessment of processes that occur within quantum devices. We present a method for characterizing, with arbitrarily high accuracy, any quantum optical process. Our protocol recovers complete knowledge of the process by studying, via homodyne tomography, its effect on a set of coherent states, that is, classical fields produced by common laser sources. We demonstrate the capability of our protocol by evaluating and experimentally verifying the effect of a test process on squeezed vacuum.
2008
5901
Lobino, M.; Korystov, D.; Kupchak, C.; Figueroa, E.; Sanders, B. C.; Lvovsky, A. I.
Complete characterization of quantum-optical processes / Lobino, M.; Korystov, D.; Kupchak, C.; Figueroa, E.; Sanders, B. C.; Lvovsky, A. I.. - In: SCIENCE. - ISSN 0036-8075. - 322:5901(2008), pp. 563-566. [10.1126/science.1162086]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/334412
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