307 citations
- Universitat Autònoma de BarcelonaES3 papers
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- MacDiarmid Institute for Advanced Materials and NanotechnologyNZ2 papers
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14 papers · 1 filter
Tackling the Gross-Pitaevskii energy functional with the Sobolev gradient - Analytical and numerical results
P. Kazemi, M. Eckart
In the first part of this contribution we prove the global existence and uniqueness of a trajectory that globally converges to the minimizer of the Gross-Pitaevskii energy function…
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…
Causal signal transmission by quantum fields. II. Quantum-statistical response of interacting bosons
L. I. Plimak, S. Stenholm
We analyse nonperturbatively signal transmission patterns in Green's functions of interacting quantum fields. Quantum field theory is re-formulated in terms of the nonlinear quantu…
Causal signal transmission by quantum fields. I. Response of the harmonic oscillator
L. I. Plimak, S. Stenholm
It is shown that response properties of a quantum harmonic oscillator are in essence those of a classical oscillator, and that, paradoxical as it may be, these classical properties…
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…
Transport of ions in a segmented linear Paul trap in printed-circuit-board technology
G. Huber, T. Deuschle, W. Schnitzler +3
We describe the construction and operation of a segmented linear Paul trap, fabricated in printed-circuit-board technology with an electrode segment width of 500 microns. We prove…