title: Observation of squeezing in the electron quantum shot noise of a tunnel junction.
abstract: We report the measurement of the fluctuations of the two quadratures of the electromagnetic field generated by a quantum conductor, a dc- and ac-biased tunnel junction placed at very low temperature. We observe that the variance of the fluctuations on one quadrature can go below that of vacuum, i.e., that the radiated field is squeezed. This demonstrates the quantum nature of the radiated electromagnetic field.
authors.affiliation: Département de Physique, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Gasse
authors.forename: Christian
authors.initials: C
authors.lastname: Lupien
authors.forename: Bertrand
authors.initials: B
authors.lastname: Reulet