A scanning electron microscope for ultracold atoms

Gericke, Tatjana; Utfeld, C.; Hommerstad, N; Ott, Herwig

doi:10.1002/lapl.200610028

Cited by 22 publications

(42 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The controlled removal of atoms can be realized, e.g., by using the experimental technique based on the electron microscopy [21,22]. A narrow electron beam is directed to one of the minima of the potential ionizing the atoms and the latter are removed from the condensate.…”

Section: The Master Equationmentioning

confidence: 99%

Control of a Bose-Einstein condensate by dissipation: Nonlinear Zeno effect

Shchesnovich

Konotop

2010

Phys. Rev. A

View full text Add to dashboard Cite

We show that controlled dissipation can be used as a tool for exploring fundamental phenomena and managing mesoscopic systems of cold atoms and Bose-Einstein condensates. Even the simplest boson-Josephson junction, that is, a Bose-Einstein condensate in a double-well trap, subjected to removal of atoms from one of the two potential minima allows one to observe such phenomena as the suppression of losses and the nonlinear Zeno effect. In such a system the controlled dissipation can be used to create desired macroscopic states and implement controlled switching among different quantum regimes.

show abstract

Section: The Master Equationmentioning

confidence: 99%

Control of a Bose-Einstein condensate by dissipation: Nonlinear Zeno effect

Shchesnovich

Konotop

2010

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…(b) Absorption image of an illuminated BEC and (c) of a BEC that has not been illuminated. Reprinted from [44] with kind permission from Herwig Ott. since usually dissipation is connected with an uncontrollable environment.…”

Section: Dissipative Processes In Experimentsmentioning

confidence: 99%

The dissipative Bose-Hubbard model

Kordas

Witthaut

Buonsante

et al. 2015

Eur. Phys. J. Spec. Top.

View full text Add to dashboard Cite

Open many-body quantum systems have attracted renewed interest in the context of quantum information science and quantum transport with biological clusters and ultracold atomic gases. The physical relevance in many-particle bosonic systems lies in the realization of counterintuitive transport phenomena and the stochastic preparation of highly stable and entangled many-body states due to engineered dissipation. We review a variety of approaches to describe an open system of interacting ultracold bosons which can be modeled by a tight-binding Hubbard approximation. Going along with the presentation of theoretical and numerical techniques, we present a series of results in diverse setups, based on a master equation description of the dissipative dynamics of ultracold bosons in a one-dimensional lattice. Next to by now standard numerical methods such as the exact unravelling of the master equation by quantum jumps for small systems and beyond mean-field expansions for larger ones, we present a coherent-state path integral formalism based on Feynman-Vernon theory applied to a many-body context.

show abstract

“…1, which can be realized, for example, by the technique of Refs. [5,6]. Then, the state of the system is given by the density matrix ρ satisfying the quantum master equation in the Lindblad form (see, for more details, Ref.…”

Section: The One-dimensional Lattice With a Periodic Sublattice Omentioning

confidence: 99%

“…A spectacular achievement in this direction is the demonstrated single-site addressability of the two-dimensional optical lattices [5,6], i.e. the atoms can be controllably removed from the lattice sites selected at will.…”

Section: Introductionmentioning

confidence: 99%

“…To this goal, one can use the controlled removal of atoms by the technique of Refs. [5,6] from a periodic sublattice of the optical lattice with BEC loaded in it. It is shown below that the condensate is driven to a coherent non-local Bloch-like state described by a complex-valued order parameter (in the two-dimensional case) or the order parameter with nodes (in the one-dimensional case).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

State engineering for a Bose-Einstein condensate in an optical lattice by means of a periodic sublattice of dissipative sites

Shchesnovich

2012

Phys. Rev. A

View full text Add to dashboard Cite

We introduce the notion of dissipative periodic lattice as an optical lattice with periodically distributed dissipative sites and argue that it allows to engineer unconventional Bose-Einstein superfluids with the complex-valued order parameter. We consider two examples, the one-dimensional dissipative optical lattice, where each third site is dissipative, and the dissipative honeycomb optical lattice, where each dissipative lattice site neighbors three non-dissipated sites. The tight-binding approximation is employed, which allows one to obtain analytical results. In the one-dimensional case the condensate is driven to a coherent Bloch-like state with non-zero quasimomentum, which breaks the translational periodicity of the dissipative lattice. In the two-dimensional case the condensate is driven to a zero quasimomentum Bloch-like state, which is a coherent superposition of four-site discrete vortices of alternating vorticity with the vortex centers located at the dissipative sites.

show abstract

A scanning electron microscope for ultracold atoms

Cited by 22 publications

References 33 publications

Control of a Bose-Einstein condensate by dissipation: Nonlinear Zeno effect

Control of a Bose-Einstein condensate by dissipation: Nonlinear Zeno effect

The dissipative Bose-Hubbard model

State engineering for a Bose-Einstein condensate in an optical lattice by means of a periodic sublattice of dissipative sites

Contact Info

Product

Resources

About