The technologies of quantum information and quantum control are rapidly improving, but fall exploitation of their capabiUties reqiures complete characterization and assessment of processes that occur within quantom 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, i.e. 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. © 2009 American Institute of Physics.
Coherent-state quantum process tomography / Lobino, M.; Korystov, D.; Kupchak, C.; Figueroa, E.; Sanders, B. C.; Lvovsky, A. I.. - 1110:(2009), pp. 447-450. (Intervento presentato al convegno 9th International Conference on Quantum Communication, Measurement And Computing, QCMC tenutosi a Calgary, AB, can nel 2009) [10.1063/1.3131371].
Coherent-state quantum process tomography
Lobino M.;
2009-01-01
Abstract
The technologies of quantum information and quantum control are rapidly improving, but fall exploitation of their capabiUties reqiures complete characterization and assessment of processes that occur within quantom 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, i.e. 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. © 2009 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
