Guiding Neutral Atoms with a Wire

A Radio-Frequency Atom Chip for Guiding Neutral Atoms

We propose two kinds of wire configurations fabricated on an atom chip surface for creating two-dimensional (2D) adiabatic rf guide with an inhomogeneous rf magnetic field and a homogenous dc magnetic field. The guiding state can be selected by changing the detuning between the frequency of rf magnetic field and the resonance frequency of two Zeeman sublevels. We also discuss the optimization o...

Atom fiber for omnidirectional guiding of cold neutral atoms.

We present an omnidirectional matter waveguide on an atom chip. The guide is based on a combination of two current-carrying wires and a bias field pointing perpendicular to the chip surface. Thermal atoms are guided for more than two complete turns along a 25-mm-long spiral path (with curve radii as short as 200 microm) at various atom-surface distances (35-450 microm). An extension of the sche...

Quantum computing with neutral atoms

Long-distance quantum communication with neutral atoms

In this thesis, we develop quantitative performance analyses for a variety of quantum communication/computation systems that have the common feature of employing neutral atoms for storage/processing and photons for qubit transmission. For most of these systems, there is a lack of a precise performance analysis to enable a comparison between different scenarios from a top-level system standpoint...

Holonomic quantum computation with neutral atoms

A. Recati, T. Calarco, P. Zanardi, J.I. Cirac, and P. Zoller 1 ECT∗, I-38050 Villazzano (TN) and Istituto Nazionale di Fisica della Materia, I-38050 Povo, Italy 2 Institut für Theoretische Physik, Universität Innsbruck, A-6020 Innsbruck, Austria 3 Dipartimento di Fisica, Università di Trento, I-38050 Povo, Italy 4 Institute for Scientific Interchange (ISI) Foundation, I-10133 Torino, Italy 5 Ma...