Zobrazeno 1 - 10
of 432
pro vyhledávání: '"Gordon R. M."'
Publikováno v:
Geosciences, Vol 14, Iss 6, p 165 (2024)
Globally, the rapid retreat of coastal cliffs poses a profound risk to property, transport infrastructure, and public safety. To quantify and compare cliff top and cliff face retreat and identify erosion processes, this study combines historical (184
Externí odkaz:
https://doaj.org/article/253ea06f5dcd4ee29d8c3483fb7f4cc0
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:
Atoms. 2024; 12(3):15
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:
http://arxiv.org/abs/2403.14330
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
We describe a mechanism for guiding the dynamical evolution of ultracold atomic motional degrees of freedom toward multiparticle entangled Dicke-squeezed states, via nonlinear self-organization under external driving. Two examples of many-body models
Externí odkaz:
http://arxiv.org/abs/2208.10111
Publikováno v:
Physical Review A 106, L011304 (2022)
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:
http://arxiv.org/abs/2205.04144
Publikováno v:
Phys. Rev. Lett. 129, 073902 (2022)
We model propagation of far-red-detuned optical vortex beams through a Bose-Einstein Condensate using nonlinear Schr\"odinger and Gross-Pitaevskii equations. We show the formation of coupled light/atomic solitons that rotate azimuthally before moving
Externí odkaz:
http://arxiv.org/abs/2203.11640
Clouds of cold neutral atoms driven by a coherent light beam in a ring cavity exhibit self-structured states transversely with respect to the beam axis due to optomechanical forces and the back action of the atomic structures on the beam. Below the i
Externí odkaz:
http://arxiv.org/abs/2111.00227