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Two Cold Atoms in a Harmonic Trap

- T. Busch, B. Englert, K. Rzążewski, M. Wilkens
- Physics
- 1 April 1998

Two ultracold atoms moving in a trap interact weakly at a very short distance. This interaction can be modeled by a properly regularized contact potential. We solve the corresponding time-independent… Expand

Dark-bright solitons in inhomogeneous Bose-Einstein condensates.

TLDR

Measurement of collective excitations in a spin-orbit-coupled Bose-Einstein condensate

- M. A. Khamehchi, Yongping Zhang, C. Hamner, T. Busch, P. Engels
- Physics
- 18 September 2014

We measure the collective excitation spectrum of a spin-orbit-coupled Bose-Einstein condensate using Bragg spectroscopy. The spin-orbit coupling is generated by Raman dressing of atomic hyperfine… Expand

Orthogonality catastrophe as a consequence of qubit embedding in an ultracold Fermi gas

- J. Goold, Thomás Fogarty, N. Gullo, M. Paternostro, T. Busch
- Physics
- 13 April 2011

We investigate the behavior of a two-level atom coupled to a one-dimensional, ultracold Fermi gas. The sudden switching on of the scattering between the two entities leads to the loss of any… Expand

Non-Markovianity criteria for open system dynamics

- N. Gullo, I. Sinayskiy, T. Busch, Francesco Petruccione
- Physics, Mathematics
- 6 January 2014

A universal definition of non-Markovianity for open systems dynamics is proposed. It is extended from the classical definition to the quantum realm by showing that a `transition' from the Markov to… Expand

Negative-Mass Hydrodynamics in a Spin-Orbit-Coupled Bose-Einstein Condensate.

- M. A. Khamehchi, Khalid Hossain, +4 authors P. Engels
- Physics, MedicinePhysical review letters
- 13 December 2016

TLDR

Fast quasiadiabatic dynamics

- S. Martínez-Garaot, A. Ruschhaupt, J. Gillet, T. Busch, J. G. Muga
- Physics
- 21 November 2014

We work out the theory and applications of a fast quasiadiabatic approach to speed up slow adiabatic manipulations of quantum systems by driving a control parameter as near to the adiabatic limit as… Expand

Alternate two-dimensional quantum walk with a single-qubit coin

- C. D. Franco, M. M. Gettrick, T. Machida, T. Busch
- Physics
- 22 July 2011

We have recently proposed a two-dimensional quantum walk where the requirement of a higher dimensionality of the coin space is substituted with the alternance of the directions in which the walker… Expand

Shaping the evanescent field of optical nanofibers for cold atom trapping.

- C. Phelan, T. Hennessy, T. Busch
- Physics, MedicineOptics express
- 5 August 2013

We investigate trapping geometries for cold, neutral atoms that can be created in the evanescent field of a tapered optical fibre by combining the fundamental mode with one of the next lowest… Expand

An efficient nonlinear Feshbach engine

- J. Li, Thomás Fogarty, S. Campbell, Xi Chen, T. Busch
- Physics
- 2 September 2017

We investigate a thermodynamic cycle using a Bose-Einstein condensate with nonlinear interactions as the working medium. Exploiting Feshbach resonances to change the interaction strength of the BEC… Expand

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