Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Nascimbene, S."'
We study the Bisognano-Wichmann Hamiltonian for fractional quantum Hall states defined on a sphere and explore its relationship with the entanglement Hamiltonian associated to the state. We present results for several examples, namely the bosonic Lau
Externí odkaz:
http://arxiv.org/abs/2312.07604
Autor:
Chauveau, G., Maury, C., Rabec, F., Heintze, C., Brochier, G., Nascimbene, S., Dalibard, J., Beugnon, J., Roccuzzo, S. M., Stringari, S.
Publikováno v:
Phys. Rev. Lett. 130 226003 (2023)
At zero temperature, a Galilean-invariant Bose fluid is expected to be fully superfluid. Here we investigate theoretically and experimentally the quenching of the superfluid density of a dilute Bose-Einstein condensate due to the breaking of translat
Externí odkaz:
http://arxiv.org/abs/2302.01776
Autor:
Maury, C., Bakkali-Hassani, B., Chauveau, G., Rabec, F., Nascimbene, S., Dalibard, J., Beugnon, J.
Cold quantum gases, when acted upon by electromagnetic fields, can give rise to samples where isolated atoms coexist with dimers or trimers, which raises the question of the interactions between these various constituents. Here we perform microwave p
Externí odkaz:
http://arxiv.org/abs/2211.05049
Publikováno v:
New J. Phys 25 013007 (2023)
When two Bose-Einstein condensates -- labelled 1 and 2 -- overlap spatially, the equilibrium state of the system depends on the miscibility criterion for the two fluids. Here, we theoretically focus on the non-miscible regime in two spatial dimension
Externí odkaz:
http://arxiv.org/abs/2207.06939
Autor:
Bakkali-Hassani, B., Maury, C., Zou, Y. -Q., Cerf, É. Le, Saint-Jalm, R., Castilho, P. C. M., Nascimbene, S., Dalibard, J., Beugnon, J.
Publikováno v:
Phys. Rev. Lett. 127, 023603 (2021)
Most experimental observations of solitons are limited to one-dimensional (1D) situations, where they are naturally stable. For instance, in 1D cold Bose gases, they exist for any attractive interaction strength $g$ and particle number $N$. By contra
Externí odkaz:
http://arxiv.org/abs/2103.01605
Autor:
Zou, Y. -Q., Cerf, É. Le, Bakkali-Hassani, B., Maury, C., Chauveau, G., Castilho, P. C. M., Saint-Jalm, R., Nascimbene, S., Dalibard, J., Beugnon, J.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 54 08LT01 (2021)
We demonstrate the arbitrary control of the density profile of a two-dimensional Bose gas by shaping the optical potential applied to the atoms. We use a digital micromirror device (DMD) directly imaged onto the atomic cloud through a high resolution
Externí odkaz:
http://arxiv.org/abs/2102.05492
Autor:
Zou, Y. -Q., Bakkali-Hassani, B., Maury, C., Cerf, É. Le, Nascimbene, S., Dalibard, J., Beugnon, J.
Publikováno v:
Nat. Commun. 12, 760 (2021)
Tan's contact is a quantity that unifies many different properties of a low-temperature gas with short-range interactions, from its momentum distribution to its spatial two-body correlation function. Here, we use a Ramsey interferometric method to re
Externí odkaz:
http://arxiv.org/abs/2007.12385
Autor:
Zou, Y. -Q., Bakkali-Hassani, B., Maury, C., Cerf, É. Le, Nascimbene, S., Dalibard, J., Beugnon, J.
Publikováno v:
Phys. Rev. Lett. 125, 233604 (2020)
In atomic systems, clock states feature a zero projection of the total angular momentum and thus a low sensitivity to magnetic fields. This makes them widely used for metrological applications like atomic fountains or gravimeters. Here, we show that
Externí odkaz:
http://arxiv.org/abs/2007.12389
Publikováno v:
Phys. Rev. Research 2, 043340 (2020)
Activating transitions between a set of atomic internal states has emerged as an elegant scheme by which lattice models can be designed in ultracold atomic gases. In this approach, the internal states can be viewed as fictitious lattice sites defined
Externí odkaz:
http://arxiv.org/abs/1907.10555
Autor:
Ville, J. L., Saint-Jalm, R., Cerf, É. Le, Aidelsburger, M., Nascimbène, S., Dalibard, J., Beugnon, J.
Publikováno v:
Phys. Rev. Lett. 121, 145301 (2018)
In superfluid systems several sound modes can be excited, as for example first and second sound in liquid helium. Here, we excite propagating and standing waves in a uniform two-dimensional Bose gas and we characterize the propagation of sound in bot
Externí odkaz:
http://arxiv.org/abs/1804.04037