Hybrid discrete- and continuous-variable quantum information
نویسندگان
چکیده
منابع مشابه
Atomic filtering for hybrid continuous-variable/discrete-variable quantum optics.
We demonstrate atomic filtering of frequency-degenerate photon pairs from a sub-threshold optical parametric oscillator (OPO). The filter, a modified Faraday anomalous dispersion optical filter (FADOF), achieves 70% peak transmission simultaneous with 57 dB out-of-band rejection and a 445 MHz transmission bandwidth. When applied to the OPO output, only the degenerate mode, containing one-mode s...
متن کاملContinuous-variable and hybrid quantum gates
We provide several schemes to construct the continuous-variable SWAP gate and present a Hermitian generalized many-body continuous controlled-NOT gate. We introduce and study the hybrid controlled-NOT gate and controlledSWAP gate, and their physical realizations are discussed in trapped-ion systems. These continuous-variable and hybrid quantum gates may be used in the corresponding continuous-v...
متن کاملContinuous-variable quantum information processing
Observables of quantum systems can possess either a discrete or a continuous spectrum. For example, upon measurements of the photon number of a light state, discrete outcomes will result whereas measurements of the light’s quadrature amplitudes result in continuous outcomes. If one uses the continuous degree of freedom of a quantum system for encoding, processing or detecting information, one e...
متن کاملGaussian states in continuous variable quantum information
ISBN 88-7088-483-X (Bibliopolis, Napoli, 2005) http://www.bibliopolis.it These notes originated out of a set of lectures in Quantum Optics and Quantum Information given by one of us (MGAP) at the University of Napoli and the University of Milano. A quite broad set of issues are covered, ranging from elementary concepts to current research topics, and from fundamental concepts to applications. A...
متن کاملInformation losses in continuous-variable quantum teleportation
Quantum teleportation allows the transmission of an unknown quantum state by combining the nonlocal quantum coherence of entangled states with the transmission of classical information obtained in a joint measurement of the unknown input state and one part of the entangled pair @1#. Ideally, the classical information transmitted contains no information about the input state, and the output stat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Physics
سال: 2015
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys3410