corner
corner
APS » Journals » Phys. Rev. A » Volume 61 » Issue 2
< Previous Article | Next Article >

Phys. Rev. A 61, 022304 (2000) [11 pages]

Quantum gates with neutral atoms: Controlling collisional interactions in time-dependent traps

Download: PDF (145 kB) Buy this article Export: BibTeX or EndNote (RIS)

T. Calarco1,2, E. A. Hinds3, D. Jaksch1, J. Schmiedmayer4, J. I. Cirac1, and P. Zoller1
1Institut für Theoretische Physik, Universität Innsbruck, Technikerstraße 25/2, A-6020 Innsbruck, Austria
2ECT*, European Centre for Theoretical Studies in Nuclear Physics and Related Areas, Villa Tambosi, Strada delle Tabarelle 286, I–38050 Villazzano (Trento), Italy
3Sussex Centre for Optical and Atomic Physics, University of Sussex, Brighton BN1 9QH, United Kingdom
4Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25/4, A-6020 Innsbruck, Austria

Received 5 May 1999; published 10 January 2000

We theoretically study specific schemes for performing a fundamental two-qubit quantum gate via controlled atomic collisions by switching microscopic potentials. In particular we calculate the fidelity of a gate operation for a configuration where a potential barrier between two atoms is instantaneously removed and restored after a certain time. Possible implementations could be based on microtraps created by magnetic and electric fields, or potentials induced by laser light.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.022304
DOI:
10.1103/PhysRevA.61.022304
PACS:
03.67.Lx, 32.80.Pj, 34.90.+q
 
< Previous Article | Next Article >