title: Emitters ofN-photon bundles.
abstract: Controlling the ouput of a light emitter is one of the basic tasks of photonics, with landmarks such as the laser and single-photon sources. The development of quantum applications makes it increasingly important to diversify the available quantum sources. Here, we propose a cavity QED scheme to realize emitters that release their energy in groups, or "bundles" ofNphotons, for integerN. Close to 100% of two-photon emission and 90% of three-photon emission is shown to be within reach of state of the art samples. The emission can be tuned with system parameters so that the device behaves as a laser or as aN-photon gun. The theoretical formalism to characterize such emitters is developed, with the bundle statistics arising as an extension of the fundamental correlation functions of quantum optics. These emitters will be useful for quantum information processing and for medical applications.
authors.affiliation: Condensed Matter Physics Center (IFIMAC), Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: C Sánchez
authors.initials: CS
authors.lastname: Muñoz
authors.affiliation: Condensed Matter Physics Center (IFIMAC), Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Del Valle
authors.affiliation: Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany.
authors.forename: A González
authors.initials: AG
authors.lastname: Tudela
authors.affiliation: Walter Schottky Institut, Technische Universiẗat München, Am Coulombwall 4, 85748 Garching, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Müller
authors.affiliation: Walter Schottky Institut, Technische Universiẗat München, Am Coulombwall 4, 85748 Garching, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Lichtmannecker
authors.affiliation: Walter Schottky Institut, Technische Universiẗat München, Am Coulombwall 4, 85748 Garching, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Kaniber
authors.affiliation: Condensed Matter Physics Center (IFIMAC), Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Tejedor
authors.affiliation: Walter Schottky Institut, Technische Universiẗat München, Am Coulombwall 4, 85748 Garching, Germany.
authors.forename: J J
authors.initials: JJ
authors.lastname: Finley
authors.affiliation: Condensed Matter Physics Center (IFIMAC), Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: F P
authors.initials: FP
authors.lastname: Laussy