Abstract
We summarize our recent work on quantum information with atomic ensembles. In particular, we describe techniques for storing and manipulating quantum information in collective states of mesoscopic ensembles. Quantum information processing is is accomplished by optical excitation into states with strong dipole-dipole interactions. The resulting “dipole blockade” can be used to inhibit transitions into all but singly excited collective states. This can be employed for a controlled generation of collective atomic spin states as well as non-classical photonic states and for scalable quantum logic gates. Furthermore, we present schemes for entangling a very large number of atoms of a spinor 1 Bose Einstein condensate based on collisional interaction between atoms. As a final example, we discuss the possiblilty of creating entangled atomic states of a few bosonic atoms in a setup which mimics a “fractional quantum Hall effect” and allows the manipulation of anyonic excitations.
© 2001 Optical Society of America
PDF ArticleMore Like This
Ignacio Cirac
QECCA1 International Conference on Quantum Information (QIM) 2001
F.B.J. Buchkremer, R. Dumke, T. Müther, M. Volk, G. Birkl, and W. Ertmer
CQTA324 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2001
Thad G. Walker
LTh2G.4 Laser Science (LS) 2013