Properties of hybrid entanglement between discrete- and continuous-variable states of light

Year: 2015

Authors: Costanzo L., Zavatta A., Grandi S., Bellini M., Jeong H., Kang M., Lee S., Ralph T.C.

Autors Affiliation: Istituto Nazionale di Ottica (INO-CNR) Largo E. Fermi 6 50125 Florence, Italy;
LENS, 50019 Sesto Fiorentino, Florence, Italy;
Center for Macroscopic Quantum Control, Department of Physics and Astronomy, Seoul National University, Seoul 151-742, South Korea;
Centre for Quantum Computation and Communication Technology, School of Mathematics and Physics, University of Queensland, Qld 4072, Australia

Abstract: We discuss some of the main features of a recently-generated form of hybrid entanglement between discrete- and continuous-variable states of light. Ideally, such a kind of entanglement should involve single-photon and coherent states as key representatives of the respective categories of states. Here we investigate the characteristics and limits of a scheme that, relying on a superposition of photon-creation operators onto two distinct modes, realizes the above ideal form of hybrid entanglement in an approximate way.


Volume: 90 (7)      Pages from: 074045-1  to: 074045-7

More Information: This work was partially supported by European Union under the CHIST-ERA project QSCALE (Quantum Technologies for Extending the Range of Quantum Communications) and from the Italian Ministry of Education, University and Research under the FIRB contract no. RBFR10M3SB. HJ, MK and S-WL were supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (No. 2010-0018295).
KeyWords: Light; Particle beams; Photons; Quantum optics; Quantum theory, Coherent state; Continuous variables; hybrid entanglement; Photon creation; Quantum-state engineering; Single photons; States of light, Quantum entanglement
DOI: 10.1088/0031-8949/90/7/074045

Citations: 11
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