title: Generation of multiphoton entangled quantum states by means of integrated frequency combs.
abstract: Complex optical photon states with entanglement shared among several modes are critical to improving our fundamental understanding of quantum mechanics and have applications for quantum information processing, imaging, and microscopy. We demonstrate that optical integrated Kerr frequency combs can be used to generate several bi- and multiphoton entangled qubits, with direct applications for quantum communication and computation. Our method is compatible with contemporary fiber and quantum memory infrastructures and with chip-scale semiconductor technology, enabling compact, low-cost, and scalable implementations. The exploitation of integrated Kerr frequency combs, with their ability to generate multiple, customizable, and complex quantum states, can provide a scalable, practical, and compact platform for quantum technologies.
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
authors.forename: Christian
authors.initials: C
authors.lastname: Reimer
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
authors.forename: Michael
authors.initials: M
authors.lastname: Kues
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
authors.forename: Piotr
authors.initials: P
authors.lastname: Roztocki
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9RH, UK.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Wetzel
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
authors.forename: Fabio
authors.initials: F
authors.lastname: Grazioso
authors.affiliation: State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China.
authors.forename: Brent E
authors.initials: BE
authors.lastname: Little
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong, China.
authors.forename: Sai T
authors.initials: ST
authors.lastname: Chu
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
authors.forename: Tudor
authors.initials: T
authors.lastname: Johnston
authors.affiliation: Department of Applied Physics, Yale University, New Haven, CT 06520, USA.
authors.forename: Yaron
authors.initials: Y
authors.lastname: Bromberg
authors.affiliation: School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK. State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an, China.
authors.forename: Lucia
authors.initials: L
authors.lastname: Caspani
authors.affiliation: School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3001, Australia.
authors.forename: David J
authors.initials: DJ
authors.lastname: Moss
authors.affiliation: Institut National de la Recherche Scientifique-Énergie Matériaux Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
authors.forename: Roberto
authors.initials: R
authors.lastname: Morandotti