title: Energy correlations of photon pairs generated by a silicon microring resonator probed by Stimulated Four Wave Mixing.
abstract: Compact silicon integrated devices, such as micro-ring resonators, have recently been demonstrated as efficient sources of quantum correlated photon pairs. The mass production of integrated devices demands the implementation of fast and reliable techniques to monitor the device performances. In the case of time-energy correlations, this is particularly challenging, as it requires high spectral resolution that is not currently achievable in coincidence measurements. Here we reconstruct the joint spectral density of photons pairs generated by spontaneous four-wave mixing in a silicon ring resonator by studying the corresponding stimulated process, namely stimulated four wave mixing. We show that this approach, featuring high spectral resolution and short measurement times, allows one to discriminate between nearly-uncorrelated and highly-correlated photon pairs.
authors.affiliation: Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia, Italy.
authors.forename: Davide
authors.initials: D
authors.lastname: Grassani
authors.affiliation: Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia, Italy.
authors.forename: Angelica
authors.initials: A
authors.lastname: Simbula
authors.affiliation: Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Pirotta
authors.affiliation: Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Galli
authors.affiliation: Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Menotti
authors.affiliation: Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
authors.forename: Nicholas C
authors.initials: NC
authors.lastname: Harris
authors.affiliation: Coriant Advanced Technology Group, 1415 West Diehl Road, Naperville, IL 60563, United States.
authors.forename: Tom
authors.initials: T
authors.lastname: Baehr-Jones
authors.affiliation: Coriant Advanced Technology Group, 1415 West Diehl Road, Naperville, IL 60563, United States.
authors.forename: Michael
authors.initials: M
authors.lastname: Hochberg
authors.affiliation: Ecole Polytechnique Fédérale de Lausanne, SB-LPQM, CH-1015 Lausanne, Switzerland.
authors.forename: Christophe
authors.initials: C
authors.lastname: Galland
authors.affiliation: Dipartimento di Fisica, Università di Pavia, via Bassi 6, 27100 Pavia, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Liscidini
authors.affiliation: Dipartimento di Ingegneria Industriale e dell'Informazione, Università di Pavia, via Ferrata 1, 27100 Pavia, Italy.
authors.forename: Daniele
authors.initials: D
authors.lastname: Bajoni