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15.10.En Atomic ensembles

Emergent devil's staircase without particle-hole symmetry in Rydberg quantum gases with competing attractive and repulsive interactions

Fri, 2016-03-11 15:34 - Ricardo gutierrez
Date: 
2015-11-11
Author(s): 

Z. Lan, J. Minář, E. Levi, W. Li, and I. Lesanovsky

Reference: 

Physical Review Letters 115, 203001 (2015)

URL: 

http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.203001

Crystalline structures and frustration in a two-component Rydberg gas

Fri, 2016-03-11 15:29 - Ricardo gutierrez
Date: 
2015-12-14
Author(s): 

Emanuele Levi, Jiří Minář, Juan P. Garrahan and Igor Lesanovsky

Reference: 

New Journal of Physics 17, 123017 (2015)

URL: 

http://iopscience.iop.org/article/10.1088/1367-2630/17/12/123017

Self-similar nonequilibrium dynamics of a many-body system with power-law interactions

Fri, 2016-03-11 15:26 - Ricardo gutierrez
Date: 
2015-12-28
Author(s): 

R. Gutierrez, J.P. Garrahan and I. Lesanovsky

Reference: 

Physical Review E 92, 062144 (2015)

URL: 

http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.062144

Crystalline structures in a one-dimensional two-component lattice gas with 1/r^α interactions

Fri, 2016-03-11 15:22 - Ricardo gutierrez
Date: 
2015-10-19
Author(s): 

Emanuele Levi, Jiří Minář, and Igor Lesanovsky

Reference: 

Journal of Statistical Mechanics, P033111 (2016)

URL: 

http://arxiv.org/abs/1503.03268

Atomic loss and gain as a resource for non-equilibrium phase transitions in optical lattices

Fri, 2016-03-11 15:14 - Ricardo gutierrez
Date: 
2016-02-09
Author(s): 

B. Everest, M. Marcuzzi and I. Lesanovsky

Reference: 

Physical Review A 93, 023409 (2016)

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.93.023409

Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Fo ̈rster Resonances

Fri, 2016-03-11 11:57 - Hans Peter Büchler
Date: 
2016-02-01
Author(s): 

H. Gorniaczyk, C. Tresp, P. Bienias, A. Paris-Mandoki, W. Li, I. Mirgorodskiy, H. P. Büchler, I. Lesanovsky, and S. Hofferberth

Reference: 

Nature Communications 7, 12480 (2016)

URL: 

https://www.nature.com/articles/ncomms12480

From the classical to the quantum Kibble-Zurek scaling

Fri, 2016-03-04 11:52 - Werner Weiss
Date: 
2015-10-27
Author(s): 

P. Silvi, G. Morigi, T. Calarco, S. Montangero

Reference: 

arXiv:1510.07941

URL: 

http://arxiv.org/abs/1510.07941

The Kibble-Zurek (KZ) hypothesis identifies the relevant time scales in out-of-equilibrium dynamics of critical systems employing concepts valid at equilibrium: It predicts the scaling of the defect formation immediately after quenches across classical and quantum phase transitions as a function of the quench speed. Here we study the crossover between the scaling dictated by a slow quench, which is ruled by the critical properties of the quantum phase transition, and the excitations due to a faster quench, where the dynamics is often well described by the classical model.

Optimal control of complex atomic quantum systems

Fri, 2016-03-04 11:33 - Werner Weiss
Date: 
2015-11-06
Author(s): 

S. van Frank, M. Bonneau, J. Schmiedmayer, S. Hild, C. Gross, M. Cheneau, I. Bloch, T. Pichler, A. Negretti, T. Calarco, S. Montangero

Reference: 

arXiv:1511.02247

URL: 

http://arxiv.org/abs/1511.02247

Interferometry with non-classical motional states of a Bose–Einstein condensate

Thu, 2016-03-03 17:01 - Werner Weiss
Date: 
2014-05-30
Author(s): 

S. van Frank, A. Negretti, T. Berrada, R. Bücker, S. Montangero, J.-F. Schaff, T. Schumm, T. Calarco, J. Schmiedmayer

Reference: 

Nature Communications 5, 4009 (2014)
doi:10.1038/ncomms5009

URL: 

http://www.nature.com/ncomms/2014/140530/ncomms5009/full/ncomms5009.html

The Ramsey interferometer is a prime example of precise control at the quantum level. It is usually implemented using internal states of atoms, molecules or ions, for which powerful manipulation procedures are now available. Whether it is possible to control external degrees of freedom of more complex, interacting many-body systems at this level remained an open question. Here we demonstrate a two-pulse Ramsey-type interferometer for non-classical motional states of a Bose–Einstein condensate in an anharmonic trap.

Pulsed excitation of Rydberg-atom-pair states in an ultracold Cs gas

Sat, 2015-09-12 12:17 - Johannes Deiglmayr
Date: 
2015-09-08
Author(s): 

H. Saßmannshausen, F. Merkt, and J. Deiglmayr

Reference: 

Phys. Rev. A 92, 032505 (2015)

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.032505

  


  

    

          

        


          

      






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