Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Dalibard, Jean"'
Mixtures of ultracold gases with long-range interactions are expected to open new avenues in the study of quantum matter. Natural candidates for this research are spin mixtures of atomic species with large magnetic moments. However, the lifetime of s
Externí odkaz:
http://arxiv.org/abs/2407.08702
Dipolar gases like erbium and dysprosium have a dense spectrum of resonant loss features associated with their strong anisotropic interaction potential. These resonances display various behaviours with density and temperature, implying diverse micros
Externí odkaz:
http://arxiv.org/abs/2310.11418
Optical box traps for cold atoms offer new possibilities for quantum-gas experiments. Building on their exquisite spatial and temporal control, we propose to engineer system-reservoir configurations using box traps, in view of preparing and manipulat
Externí odkaz:
http://arxiv.org/abs/2306.15610
Autor:
Phillips, William D., Dalibard, Jean
On 04 October 2022, the Royal Swedish Academy of Sciences announced that the Nobel Prize for Physics of 2022 was awarded jointly to Alain Aspect, John Clauser, and Anton Zeilinger "for experiments with entangled photons, establishing the violation of
Externí odkaz:
http://arxiv.org/abs/2212.04737
Autor:
Bakkali-Hassani, Brice, Dalibard, Jean
In these lecture notes, we discuss the physics of a two-dimensional binary mixture of Bose gases at zero temperature, close to the point where the two fluids tend to demix. We are interested in the case where one of the two fluids (the bath) fills th
Externí odkaz:
http://arxiv.org/abs/2210.14045
Publikováno v:
Phys. Rev. A 103, 031302 (2021)
We present experiments revealing the competing effect of quantum fluctuations and of a coherent seed in the dynamics of a spin-1 Bose-Einstein condensate, and discuss the relevance of a mean-field description of our system. We first explore a near-eq
Externí odkaz:
http://arxiv.org/abs/2101.06716
Understanding the ground state of many-body fluids is a central question of statistical physics. Usually for weakly interacting Bose gases, most particles occupy the same state, corresponding to a Bose--Einstein condensate. However, another scenario
Externí odkaz:
http://arxiv.org/abs/2010.15739
Publikováno v:
Phys. Rev. Lett. 126, 063401 (2021)
The dynamics of a many-body system can take many forms, from a purely reversible evolution to fast thermalization. Here we show experimentally and numerically that an assembly of spin 1 atoms all in the same spatial mode allows one to explore this wi
Externí odkaz:
http://arxiv.org/abs/2010.13832
Publikováno v:
Phys. Rev. Lett. 125, 033401 (2020)
Using parametric conversion induced by a Shapiro-type resonance, we produce and characterize a two-mode squeezed vacuum state in a sodium spin 1 Bose-Einstein condensate. Spin-changing collisions generate correlated pairs of atoms in the $m=\pm 1$ Ze
Externí odkaz:
http://arxiv.org/abs/2004.09003
Autor:
Chalopin, Thomas, Satoor, Tanish, Evrard, Alexandre, Makhalov, Vasiliy, Dalibard, Jean, Lopes, Raphael, Nascimbene, Sylvain
Publikováno v:
Nature Physics 16, 1017-1021(2020)
Quantum Hall systems are characterized by the quantization of the Hall conductance -- a bulk property rooted in the topological structure of the underlying quantum states. In condensed matter devices, material imperfections hinder a direct connection
Externí odkaz:
http://arxiv.org/abs/2001.01664