189 citations · 517 across the 13 of their papers we have counts for
13 papers
Emergence of singularities from decoherence: Quantum catastrophes
Aaron Z. Goldberg, Asma Al-Qasimi, J. Mumford +1
We use a master equation to study the dynamics of two coupled macroscopic quantum systems (e.g.\ a Josephson junction made of two Bose-Einstein condensates or two spin states of an…
Catastrophes in non-equilibrium many-particle wave functions: universality and critical scaling
J Mumford, W Kirkby, D H J O'Dell
As part of the quest to uncover universal features of quantum dynamics, we study catastrophes that form in simple many-body wave functions after a quench, focusing on two-mode syst…
Parametric amplification of light in a cavity with a moving dielectric membrane: Landau-Zener problem for the Maxwell field
F. Hasan, D. H. J. O'Dell
We perform a theoretical investigation into the classical and quantum dynamics of an optical field in a cavity containing a moving membrane ("membrane-in-the-middle" set-up). Our a…
Anisotropic and long-range vortex interactions in two-dimensional dipolar Bose gases
B. C. Mulkerin, R. M. W. van Bijnen, D. H. J. O'Dell +2
We perform a theoretical study into how dipole-dipole interactions modify the properties of superfluid vortices within the context of a two-dimensional atomic Bose gas of co-orient…
Quantum catastrophes and ergodicity in the dynamics of bosonic Josephson junctions
D. H. J. O'Dell
We study rainbow (fold) and cusp catastrophes that form in Fock space following a quench in a Bose Josephson junction. In the Gross-Pitaevskii mean-field theory the rainbows are si…
Collective excitation frequencies and stationary states of trapped dipolar Bose-Einstein condensates in the Thomas-Fermi regime
R. M. W. van Bijnen, N. G. Parker, S. J. J. M. F. Kokkelmans +2
We present a general method for obtaining the exact static solutions and collective excitation frequencies of a trapped Bose-Einstein condensate (BEC) with dipolar atomic interacti…
Classical versus quantum dynamics of the atomic Josephson junction
G. J. Krahn, D. H. J. O'Dell
We compare the classical (mean-field) dynamics with the quantum dynamics of atomic Bose-Einstein condensates in double-well potentials. The quantum dynamics are computed using a si…
Exact solutions and stability of rotating dipolar Bose-Einstein condensates in the Thomas-Fermi limit
R. M. W. van Bijnen, A. J. Dow, D. H. J. O'Dell +2
We present a theoretical analysis of dilute gas Bose-Einstein condensates with dipolar atomic interactions under rotation in elliptical traps. Working in the Thomas-Fermi limit, we…
Atomic Bloch-Zener oscillations for sensitive force measurements in a cavity
B. Prasanna Venkatesh, M. Trupke, E. A. Hinds +1
Cold atoms in an optical lattice execute Bloch-Zener oscillations when they are accelerated. We have performed a theoretical investigation into the case when the optical lattice is…
Dynamical Instability of a Rotating Dipolar Bose-Einstein Condensate
R. M. W. van Bijnen, D. H. J. O'Dell, N. G. Parker +1
We calculate the hydrodynamic solutions for a dilute Bose-Einstein condensate with long-range dipolar interactions in a rotating, elliptical harmonic trap, and analyse their dynami…
Depletion of a Bose-Einstein condensate by laser-iduced dipole-dipole interactions
I. E. Mazets, D. H. J. O'Dell, G. Kurizki +2
We study a gaseous Bose-Einstein condensate with laser-induced dipole-dipole interactions using the Hartree-Fock-Bogoliubov theory within the Popov approximation. The dipolar inter…
Rotons in gaseous Bose-Einstein condensates irradiated by a laser
D. H. J. O'Dell, S. Giovanazzi, G. Kurizki
A gaseous Bose-Einstein condensate (BEC) irradiated by a far off-resonance laser has long-range interatomic correlations caused by laser-induced dipole-dipole interactions. These c…
Dynamical diffraction in sinusoidal potentials: uniform approximations for Mathieu functions
Duncan H. J. O'Dell
Eigenvalues and eigenfunctions of Mathieu's equation are found in the short wavelength limit using a uniform approximation (method of comparison with a `known' equation having the…