Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Axel Pelster"'
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033094 (2024)
We report on a nonequilibrium quantum phase transition (NQPT) in a hybrid quantum many-body system consisting of a vibrational mode of a damped nanomembrane interacting optomechanically with a cavity, whose output light couples to two internal states
Externí odkaz:
https://doaj.org/article/0282efcd5fda4a67bdbe3be96067772e
Publikováno v:
New Journal of Physics, Vol 26, Iss 1, p 013035 (2024)
Within the many different models, that appeared with the use of cold atoms to create BECs, the bubble trap shaped potential has been of great interest. However, the relationship between the physical parameters and the resulting manifold geometry rema
Externí odkaz:
https://doaj.org/article/7d78800864a0438c97a13fe3be30a6d6
Autor:
Enrico Stein, Axel Pelster
Publikováno v:
New Journal of Physics, Vol 25, Iss 3, p 033025 (2023)
Thermo-optic interaction significantly differs from the usual particle-particle interactions in physics, as it is retarded in time. A prominent platform for realising this kind of interaction are photon Bose–Einstein condensates, which are created
Externí odkaz:
https://doaj.org/article/f7d55dd250674cb49d77c04a7b201ec0
Autor:
Enrico Stein, Axel Pelster
Publikováno v:
New Journal of Physics, Vol 25, Iss 3, p 033026 (2023)
Although photon Bose–Einstein condensates have already been used for studying many interesting effects, the precise role of the photon–photon interaction is not fully clarified up to now. In view of this, it is advantageous that these systems all
Externí odkaz:
https://doaj.org/article/1468d5bb00e1486a86f582765b9e4055
Publikováno v:
Physical Review Research, Vol 4, Iss 1, p 013122 (2022)
Ultracold quantum gases are highly controllable and thus capable of simulating difficult quantum many-body problems ranging from condensed matter physics to astrophysics. Although experimental realizations have so far been restricted to flat geometri
Externí odkaz:
https://doaj.org/article/de8922c7af144546b3ea830cfaf277e7
Autor:
Enrico Stein, Axel Pelster
Publikováno v:
New Journal of Physics, Vol 24, Iss 2, p 023032 (2022)
Since the advent of experiments with photon Bose–Einstein condensates (phBECs) in dye-filled microcavities in 2010, many investigations have focussed upon the emerging effective photon–photon interaction. Despite its smallness, it can be identifi
Externí odkaz:
https://doaj.org/article/c78df27be4b6427a8e8d8c30cf3dba38
Autor:
Enrico Stein, Axel Pelster
Publikováno v:
New Journal of Physics, Vol 24, Iss 2, p 023013 (2022)
Photon Bose–Einstein condensates are characterised by a quite weak interaction, so they behave nearly as an ideal Bose gas. Moreover, since the current experiments are conducted in a microcavity, the longitudinal motion is frozen out and the photon
Externí odkaz:
https://doaj.org/article/b681c0e8da4f4d86b3abacc5aa39585c
Autor:
Bodhaditya Santra, Christian Baals, Ralf Labouvie, Aranya B. Bhattacherjee, Axel Pelster, Herwig Ott
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
Quantum gas experiments are useful to study non-equilibrium many-body dynamics. Here, the authors demonstrate how the Talbot effect can be used to measure the spreading of phase coherence of ultracold atoms in an optical lattice.
Externí odkaz:
https://doaj.org/article/5ed30eed3f6746dea51322ede8bab085
Publikováno v:
New Journal of Physics, Vol 23, Iss 8, p 083007 (2021)
We analyse the distinction between the three different ground states presented by a system of spinless bosons with short-range interactions submitted to a random potential using the disordered Bose–Hubbard model. The criteria for identifying the su
Externí odkaz:
https://doaj.org/article/fd303a30a20e465f84ef78db6879b0c5
Autor:
Tao Wang (汪涛), Shijie Hu (胡时杰), Sebastian Eggert, Michael Fleischhauer, Axel Pelster, Xue-Feng Zhang (张学锋)
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013275 (2020)
We consider two species of hard-core bosons with density-dependent hopping in a one-dimensional optical lattice, for which we propose experimental realizations using time-periodic driving. The quantum phase diagram for half-integer filling is determi
Externí odkaz:
https://doaj.org/article/a27e0243f34d4ad8804ab2e440cb8e7b