Volume 65, Number 5, March 2004
|Page(s)||587 - 593|
|Published online||01 February 2004|
Quantized AC-Stark shifts and their use for multiparticle entanglement and quantum gates
Institut für Experimentalphysik - 6020 Innsbruck, Austria
Accepted: 18 December 2003
A single -ion is trapped and laser-cooled to its motional ground state. Laser radiation which couples off-resonantly to a motional sideband of the ion's to transition causes a phase shift proportional to the ion's motional quantum state . As the phase shift is conditional upon the ion's motion, we are able to demonstrate a universal 2-qubit quantum gate operation where the electronic target state is flipped depending on the motional qubit state . Finally, we discuss scaling properties of this universal quantum gate for linear ion crystals and present numerical simulations for the generation of a maximally entangled state of five ions.
PACS: 03.67.Lx – Quantum computation / 03.65.Ud – Entanglement and quantum nonlocality (e.g., EPR paradox, Bell's inequalities, GHZ states, etc.)
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.