Adaptive detection of arbitrarily shaped ultrashort quantum light states

Year: 2012

Authors: Polycarpou C., Cassemiro KN, Venturi G., Zavatta A., Bellini M.

Autors Affiliation: Istituto Nazionale di Ottica (INO-CNR), Largo Enrico Fermi 6, 50125 Florence, Italy; LENS and Department of Physics, University of Firenze, 50019 Sesto Fiorentino, Florence, Italy; Max Planck Institute for the Science of Light, 91058 Erlangen, Germany; Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife-PE, Brazil

Abstract: A quantum state of light is the excitation of a particular spatiotemporal mode of the electromagnetic field. A precise control of the mode structure is therefore essential for processing, detecting, and using photonic states in novel quantum technologies. Here we demonstrate an adaptive scheme, combining techniques from the fields of ultrafast coherent control and quantum optics, for probing the arbitrary complex spectrotemporal profile of an ultrashort quantum light pulse. The ability to access the modal structure of a quantum light state could boost the capacity of current quantum information protocols.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 109 (5)      Pages from: 053602  to: 053602

More Information: M. B. and A. Z. acknowledge the support of Ente Cassa di Risparmio di Firenze, Regione Toscana under Project CTOTUS, EU under ERA-NET CHIST-ERA Project QSCALE, and MIUR, under Contract No. FIRB RBFR10M3SB. K. N. C. acknowledges support from the Alexander von Humboldt Foundation and LaserLab Europe.
KeyWords: Adaptive detection; Adaptive scheme; Coherent control; Combining techniques; Light pulse; Modal structures; Mode structure; Photonic state; Precise control; Quantum Information; Quantum state; Quantum technologies; Ultra-fast, Electromagnetic fields; Excited states, Quantum optics
DOI: 10.1103/PhysRevLett.109.053602

Citations: 57
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