title: Coherent Generation of Nonclassical Light on Chip via Detuned Photon Blockade.
abstract: The on-chip generation of nonclassical states of light is a key requirement for future optical quantum hardware. In solid-state cavity quantum electrodynamics, such nonclassical light can be generated from self-assembled quantum dots strongly coupled to photonic crystal cavities. Their anharmonic strong light-matter interaction results in large optical nonlinearities at the single photon level, where the admission of a single photon into the cavity may enhance (photon tunneling) or diminish (photon blockade) the probability for a second photon to enter the cavity. Here, we demonstrate that detuning the cavity and quantum-dot resonances enables the generation of high-purity nonclassical light from strongly coupled systems. For specific detunings we show that not only the purity but also the efficiency of single-photon generation increases significantly, making high-quality single-photon generation by photon blockade possible with current state-of-the-art samples.
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Kai
authors.initials: K
authors.lastname: Müller
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Armand
authors.initials: A
authors.lastname: Rundquist
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Kevin A
authors.initials: KA
authors.lastname: Fischer
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Tomas
authors.initials: T
authors.lastname: Sarmiento
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Konstantinos G
authors.initials: KG
authors.lastname: Lagoudakis
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Yousif A
authors.initials: YA
authors.lastname: Kelaita
authors.affiliation: Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain.
authors.forename: Carlos
authors.initials: C
authors.lastname: Sánchez Muñoz
authors.affiliation: Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain.
authors.forename: Elena
authors.initials: E
authors.lastname: del Valle
authors.affiliation: Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain.|Russian Quantum Center, Novaya 100, 143025 Skolkovo, Moscow Region, Russia.
authors.forename: Fabrice P
authors.initials: FP
authors.lastname: Laussy
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: Jelena
authors.initials: J
authors.lastname: Vučković