title: Quantum manipulation in a Josephson light-emitting diode.
abstract: We assess the suitability of the recently proposed Josephson LED for quantum manipulation purposes. We show that the device can both be used for on-demand production of entangled photon pairs and operated as a two-qubit gate. Also, one can entangle particle spin with photon polarization and/or measure the spin by measuring the polarization.
authors.affiliation: Instituut-Lorentz, Universiteit Leiden, PO Box 9506, 2300 RA Leiden, The Netherlands.
authors.forename: Fabian
authors.initials: F
authors.lastname: Hassler
authors.forename: Yuli V
authors.initials: YV
authors.lastname: Nazarov
authors.forename: Leo P
authors.initials: LP
authors.lastname: Kouwenhoven