%0 Journal Article %T Antibunching of microwave-frequency photons observed in correlation measurements using linear detectors %A Bozyigit, D. %A Lang, C. %A Steffen, L. %A Fink, J. M. %A Eichler, C. %A Baur, M. %A Bianchetti, R. %A Leek, P. J. %A Filipp, S. %A da Silva, M. P. %A Blais, A. %A Wallraff, A. %J Nature Physics %D 2011 %V 7 %N 2 %F Bozyigit_etal2011 %O exported from refbase (https://db.rplab.ru/refbase/show.php?record=835), last updated on Wed, 13 Jun 2012 19:06:41 -0500 %X At optical frequencies the radiation produced by a source, such as a laser, a black body or a single-photon emitter, is frequently characterized by analysing the temporal correlations of emitted photons using single-photon counters. At microwave frequencies, however, there are no efficient single-photon counters yet. Instead, well-developed linear amplifiers allow for efficient measurement of the amplitude of an electromagnetic field. Here, we demonstrate first- and second-order correlation function measurements of a pulsed microwave-frequency single-photon source integrated on the same chip with a 50/50 beam splitter followed by linear amplifiers and quadrature amplitude detectors. We clearly observe single-photon coherence in first-order and photon antibunching in second-order correlation function measurements of the propagating fields. %K fromIPMRAS %P 154-158