Hannover 2003 – wissenschaftliches Programm
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Q: Quantenoptik
Q 13: Quantencomputer
Q 13.3: Vortrag
Montag, 24. März 2003, 17:00–17:15, F102
Quantum Information Processing with Atoms in Microfabricated Optical Elements — •Michael Volk1, Falk Scharnberg1,2, Rainer Dumke1, Tobias Müther1, Wolfgang Ertmer1, and Gerhard Birkl1 — 1Institut für Quantenoptik, Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany — 2Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
We present the application of micro-optical elements to quantum information processing with atoms and discuss the advantages and the potential of this new approach.
We experimentally investigate a scalable system of registers for atomic qubits based on multiple far-detuned dipole traps created by two-dimensional arrays of microfabricated lenses [1]. Each trap is individually addressable, different or identical internal states can be prepared, manipulated, and retrieved for the atoms in the individual potential wells. By changing the optical configuration, two sets of trap arrays can be created with variable separation. The two sets can be brought close to each other or even made to overlap. We discuss the potential for storing and manipulating qubits inscribed into atoms, as well as for implementing various schemes for quantum entanglement and two- or multiple-qubit gates.
[1] R. Dumke, M. Volk, T. Müther, F.B.J. Buchkremer, G. Birkl, and W. Ertmer, Phys. Rev. Lett. 89, 097903 (2002).