230 citations
- Institute for High Energy PhysicsES25 papers
- Institució Catalana de Recerca i Estudis AvançatsES17 papers
- Universitat de BarcelonaES11 papers
- Universidad Complutense de MadridES8 papers
- University of PaduaIT8 papers
- ETH ZurichCH7 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PadovaIT7 papers
- Max Planck Institute for PhysicsDE7 papers
- University of SienaIT7 papers
- A. Alikhanyan National LaboratoryAM6 papers
- Institute of Photonic SciencesES6 papers
- Institute of Space SciencesES6 papers
23 papers · 1 filter
Collective decoherence of cold atoms coupled to a Bose-Einstein condensate
M. A. Cirone, G. De Chiara, G. M. Palma +1
We examine the time evolution of cold atoms (impurities) interacting with an environment consisting of a degenerate bosonic quantum gas. The impurity atoms differ from the environm…
Comment on "Nongeometric Conditional Phase Shift via Adiabatic Evolution of Dark Eigenstates: A New Approach to Quantum Computation"
Ognyan Oreshkov, John Calsamiglia
In [Phys. Rev. Lett. 95, 080502 (2005)], Zheng proposed a scheme for implementing a conditional phase shift via adiabatic passages. The author claims that the gate is "neither of d…
Ramsey interferometry with a spin embedded in a Coulomb chain
Gabriele De Chiara, Tommaso Calarco, Shmuel Fishman +1
We show that the statistical properties of a Coulomb crystal can be measured by means of a standard interferometric procedure performed on the spin of one ion in the chain. The ion…
Operator quantum error correction for continuous dynamics
Ognyan Oreshkov, Daniel A. Lidar, Todd A. Brun
We study the conditions under which a subsystem code is correctable in the presence of noise that results from continuous dynamics. We consider the case of Markovian dynamics as we…
Photon-Mediated Interaction between Two Distant Atoms
Stefan Rist, Jürgen Eschner, Markus Hennrich +1
We study the photonic interactions between two distant atoms which are coupled by an optical element (a lens or an optical fiber) focussing part of their emitted radiation onto eac…
Optimal control of atom transport for quantum gates in optical lattices
G. De Chiara, T. Calarco, M. Anderlini +5
By means of optimal control techniques we model and optimize the manipulation of the external quantum state (center-of-mass motion) of atoms trapped in adjustable optical potential…