Kavan Modi, University of Oxford
Wei Cui, University of Toronto
Keith Lee, Institute for Quantum Computing (IQC)
James Martin, University of Waterloo
"Atom chips" allow the manipulation of ultra-cold laser cooled atoms using micro fabricated wire structures. Current carrying wires on the chip surface generate inhomogeneous magnetic fields, allowing cold atoms to be held by the same forces as those in the famous Stern-Gerlach experiment. By varying the wire currents atoms can be squeezed into small volumes, and put at specific distances relative to surfaces.
Joel Wallman, The University of Sydney
Steven Bennett, Harvard
Rob Spekkens (Perimeter Institute), Institute for Quantum Computing (IQC)
Hartmut Haeffner, University of California, Berkeley
David Meyer, University of California, San Diego
Eduardo Martin-Martinez, Institute for Quantum Computing (IQC)
We show that particle detectors, such as 2-level atoms, in non-inertial motion (or in gravitational fields) could be used to build quantum gates for the processing of quantum information. Concretely, we show that through suitably chosen non-inertial trajectories of the detectors the interaction Hamiltonian's time dependence can be modulated to yield arbitrary rotations in the Bloch sphere due to relativistic quantum effects.