Heralded processes on continuous-variable spaces as quantum maps

Journal Article · Thu Dec 04 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4903143· OSTI ID:22390695

Ferreyrol, Franck ^[1]; Spagnolo, Nicolò ^[2]; Blandino, Rémi ^[3]; Barbieri, Marco ^[4]; Tualle-Brouri, Rosa ^[5]

---

1. Laboratoire Charles Fabry, Institut d'Optique, Université Paris-Sud and CNRS, F-91127, Palaiseau, France and Centre for Quantum Dynamics and Centre for Quantum Computation and Communication Technology, Griffith University, Brisbane 4111 (Australia)
2. Laboratoire Charles Fabry, Institut d'Optique, Université Paris-Sud and CNRS, F-91127, Palaiseau, France and Dipartimento di Fisica, Sapienza Università di Roma, piazzale Aldo Moro 5, I-00185 Rome (Italy)
3. Laboratoire Charles Fabry, Institut d'Optique, Université Paris-Sud and CNRS, F-91127, Palaiseau (France)
4. Laboratoire Charles Fabry, Institut d'Optique, Université Paris-Sud and CNRS, F-91127, Palaiseau, France and Clarendon Laboratory, Department of Physics, University of Oxford, OX1 3PU (United Kingdom)
5. Laboratoire Charles Fabry, Institut d'Optique, Université Paris-Sud and CNRS, F-91127, Palaiseau, France and Institut Universitaire de France, 103 boulevard St. Michel, 75005, Paris (France)

Heralding processes, which only work when a measurement on a part of the system give the good result, are particularly interesting for continuous-variables. They permit non-Gaussian transformations that are necessary for several continuous-variable quantum information tasks. However if maps and quantum process tomography are commonly used to describe quantum transformations in discrete-variable space, they are much rarer in the continuous-variable domain. Also, no convenient tool for representing maps in a way more adapted to the particularities of continuous variables have yet been explored. In this paper we try to fill this gap by presenting such a tool.

• OSTI ID: 22390695
• Journal Information: AIP Conference Proceedings, Vol. 1633, Issue 1; Conference: 11. International Conference on Quantum Communication, Measurement and Computation, Vienna (Austria), 30 Jul - 3 Aug 2012; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
QUANTUM INFORMATION
QUANTUM MECHANICS
SPACE
TOMOGRAPHY
TRANSFORMATIONS