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The measurement of the photocount distribution of a low light level signal as an easy method to determine its factorial moments

Manuel P. Cagigal

Optics CommunicationsMay 1, 19894 citations

Photon statistics of a Josephson parametric amplifier from continuous microwave measurements

Jean Olivier Simoneau, Stéphane Virally, Christian Lupien +1 more

Bulletin of the American Physical SocietyMar 8, 20180 citations

Statistics of the quantized microwave electromagnetic field in mesoscopic elements at low temperature

Stéphane Virally, Jean Olivier Simoneau, Christian Lupien +1 more

The quantum behavior of the electromagnetic field in mesoscopic elements is intimately linked to the quantization of the charge. In order to probe nonclassical aspects of the field in those elements, it is essential that thermal noise be reduced to the quantum level, i.e. to scales where kT ≲ hν . This is easily achieved in dilution refrigerators for frequencies of a few GHz, i.e. in the microwave domain. Several recent experiments have highlighted the link between discrete charge transport and discrete photon emission in simple mesoscopic elements such as a tunnel junction. Photocount statistics are inferred from the measurement of continuous variables such as the quadratures of the field.The quantum behavior of the electromagnetic field in mesoscopic elements is intimately linked to the quantization of the charge. In order to probe nonclassical aspects of the field in those elements, it is essential that thermal noise be reduced to the quantum level, i.e. to scales where kT ≲ hν . This is easily achieved in dilution refrigerators for frequencies of a few GHz, i.e. in the microwave domain. Several recent experiments have highlighted the link between discrete charge transport and discrete photon emission in simple mesoscopic elements such as a tunnel junction. Photocount statistics are inferred from the measurement of continuous variables such as the quadratures of the field.

arXiv:1804.10720Journal of Physics Conference SeriesMar 1, 20180 citations

Photon statistics measurement for coherent fields

Yuan Liu, Wang Lin Jun, 董双丽 +3 more

Chinese Optics LettersJan 1, 20080 citations

Characterizing quantum microwave radiation and its entanglement with superconducting qubits using linear detectors

Christopher Eichler, Deniz Bozyigit, Andreas J. Wallraff

Recent progress in the development of superconducting circuits has enabled the realization of interesting sources of nonclassical radiation at microwave frequencies. Here, we discuss field quadrature detection schemes for the experimental characterization of itinerant microwave photon fields and their entanglement correlations with stationary qubits. In particular, we present joint state tomography methods of a radiation field mode and a two-level system. Including the case of finite quantum detection efficiency, we relate measured photon field statistics to generalized quasiprobability distributions and statistical moments for one-channel and two-channel detection. We also present maximum-likelihood methods to reconstruct density matrices from measured field quadrature histograms. Our theoretical investigations are supported by the presentation of experimental data, for which microwave quantum fields beyond the single-photon and Gaussian level have been prepared and reconstructed.Recent progress in the development of superconducting circuits has enabled the realization of interesting sources of nonclassical radiation at microwave frequencies. Here, we discuss field quadrature detection schemes for the experimental characterization of itinerant microwave photon fields and their entanglement correlations with stationary qubits. In particular, we present joint state tomography methods of a radiation field mode and a two-level system. Including the case of finite quantum detection efficiency, we relate measured photon field statistics to generalized quasiprobability distributions and statistical moments for one-channel and two-channel detection. We also present maximum-likelihood methods to reconstruct density matrices from measured field quadrature histograms. Our theoretical investigations are supported by the presentation of experimental data, for which microwave quantum fields beyond the single-photon and Gaussian level have been prepared and reconstructed.

arXiv:1206.3405Physical Review ASep 10, 2012134 citations

Statistics of photocounts of a field formed by superposition of a coherent signal and brownian noise

Nick Laskin, Александр Сергеевич Мазманишвили

Radiophysics and Quantum ElectronicsApr 1, 19850 citations

Discrete photon statistics from continuous microwave measurements

Abstract

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Discrete photon statistics from continuous microwave measurements

Abstract

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