Zobrazeno 1 - 10
of 312
pro vyhledávání: '"R A, Robb"'
Publikováno v:
Atoms, Vol 12, Iss 3, p 15 (2024)
We show that a Bose–Einstein Condensate illuminated by a far off-resonant optical pump field and its retroreflection from a feedback mirror can produce stable, localised structures known as optomechanical droplets. We show that these droplets could
Externí odkaz:
https://doaj.org/article/c9325b77252a4f839367e82ef913b67b
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p L032004 (2023)
A Bose-Einstein condensate (BEC) interacting with an optical field via a feedback mirror can be a realization of the quantum Hamiltonian Mean Field (HMF) model, a paradigmatic model of long-range interactions in quantum systems. We demonstrate that t
Externí odkaz:
https://doaj.org/article/5e86a1e540d045e4a2c49f17fbd6a4f7
Autor:
Bonifacio, Rodolfo, Fares, Hesham, Ferrario, Massimo, W. J. McNeil, Brian, R. M. Robb, Gordon
Publikováno v:
In Optics Communications 1 January 2017 382:58-63
Publikováno v:
Atoms, Vol 9, Iss 3, p 40 (2021)
Collective atomic recoil lasing (CARL) is a process during which an ensemble of cold atoms, driven by a far-detuned laser beam, spontaneously organize themselves in periodic structures on the scale of the optical wavelength. The principle was envisag
Externí odkaz:
https://doaj.org/article/a6a4ef93d676456daf5fa7dd63b57dc5
Autor:
Thorsten Ackemann, Guillaume Labeyrie, Giuseppe Baio, Ivor Krešić, Josh G. M. Walker, Adrian Costa Boquete, Paul Griffin, William J. Firth, Robin Kaiser, Gian-Luca Oppo, Gordon R. M. Robb
Publikováno v:
Atoms, Vol 9, Iss 3, p 35 (2021)
This article discusses self-organization in cold atoms via light-mediated interactions induced by feedback from a single retro-reflecting mirror. Diffractive dephasing between the pump beam and the spontaneous sidebands selects the lattice period. Sp
Externí odkaz:
https://doaj.org/article/5da79827e5134151b2e6fb21fccee85d
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023126 (2020)
Optomechanical pattern forming instabilities in a cloud of cold atoms lead to self-organized spatial structures of light and atoms. Here, we consider the optomechanical self-structuring of a cold atomic cloud in the presence of a phase structured inp
Externí odkaz:
https://doaj.org/article/6c6980faa89c4da6bba4cc99b3cd4a4e
Publikováno v:
Physical Review A. 105
We investigate numerically a one-dimensional Bose-Einstein condensate illuminated by off-resonant laser light which is retroreflected by a single feedback mirror. Studying the ground states of the system, we find density structures which are self-tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20208623d05352b9a8d3abf755cdd588
https://doi.org/10.1103/physreva.105.063305
https://doi.org/10.1103/physreva.105.063305
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The orbital angular momentum (OAM) from a laser beam can be coherently transferred to a Bose-Einstein condensate in a ring trap, in quantized units of $\hbar$. The light-matter coupling allows for the superradiant transfer of the atoms between the di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d606850a52c94b46f7b0bbeffb5cf125
http://arxiv.org/abs/2205.04144
http://arxiv.org/abs/2205.04144
Publikováno v:
Physical Review A. 105
We investigate the interplay between two mechanisms for magnetic self-organization in a cloud of cold rubidium atoms subjected to a retroreflected laser beam. The transition between two different phases, one linked to a spontaneous spatial modulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d44ebf000bf88612380beb6386d7cb0
https://doi.org/10.1103/physreva.105.023505
https://doi.org/10.1103/physreva.105.023505
Publikováno v:
Optica Advanced Photonics Congress 2022.
Optical vortex beams propagating through a BEC fragment into solitons depending on the optical angular momentum. Using Bessel-Gauss beams, we transversely confine the solitons leading to atomic transport of BEC droplets.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::563d62b50b3c005cce15aa278eaa4115
https://doi.org/10.1364/np.2022.npm2e.3
https://doi.org/10.1364/np.2022.npm2e.3