Title :
A single ion interacting with single spontaneous parametric down-conversion photons
Author :
Rohde, F. ; Piro, N. ; Schuck, C. ; Almendros, M. ; Huwer, J. ; Hennrich, M. ; Haase, A. ; Mitchell, M.W. ; Dubin, F. ; Eschner, J.
Author_Institution :
ICFO-Inst. de Cienc. Fotoniques, Castelldefels, Spain
Abstract :
The paper studies the second kind of entanglement distribution scheme. Entangled photon pairs are generated using the type-II spontaneous parametric down-conversion process (SPDC) in a PPKTP crystal. The source is tunable to both D-P transitions at 850 and 854 nm in 40Ca+ ions. The photon pairs are split by a polarizing beam splitter and one photon mode is coupled into a filtering line, consisting of two cascaded Fabry-Perot cavities, which are resonant with the atomic transition ( deltanu = 22 MHz). The second photon beam is focused onto a single trapped 40Ca+ ion through a high numerical aperture (0.4 NA) lens.
Keywords :
atom-photon collisions; calcium; particle traps; positive ions; potassium compounds; quantum entanglement; quantum optics; radiation pressure; two-photon processes; Ca; D-P transitions; Fabry-Perot cavities; KTP; PPKTP crystal; SPDC; atomic transition; entanglement distribution; ion trap; polarizing beam splitter; single ion interaction; spontaneous parametric down-conversion; wavelength 850 nm; wavelength 854 nm; Absorption; Atomic measurements; Filters; Fluorescence; Optical coupling; Photonic crystals; Polarization; Quantum entanglement; Resonance; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192788
