207 citations · 249 across the 10 of their papers we have counts for
11 papers
Optical pattern formation in self-focusing and self-defocusing diffractively thick media
G. Labeyrie, I. Krešić, R. Kaiser +1
Cold atomic clouds constitute highly resonant nonlinear optical media, whose refractive index can be easily tuned via the light frequency. When subjected to a retro-reflected laser…
Controllable interatomic interaction mediated by diffractive coupling in a cavity
Ivor Krešić
Photon-mediated interaction can be used for simulating complex many-body phenomena with ultracold atoms coupled to electromagnetic modes of an optical resonator. We theoretically s…
Quantum enhanced SU(1,1) matter wave interferometry in a ring cavity
Ivor Krešić, Thorsten Ackemann
Quantum squeezed states offer metrological enhancement as compared to their classical counterparts. Here, we devise and numerically explore a novel method for performing SU(1,1) in…
Generating multiparticle entangled states by self-organization of driven ultracold atoms
Ivor Krešić, Gordon R. M. Robb, Gian-Luca Oppo +1
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…
Transforming space with non-Hermitian dielectrics
Ivor Krešić, Konstantinos G. Makris, Ulf Leonhardt +1
Coordinate transformations are a versatile tool to mould the flow of light, enabling a host of astonishing phenomena such as optical cloaking with metamaterials. Moving away from t…
Self-Organization in Cold Atoms Mediated by Diffractive Coupling
Thorsten Ackemann, Guillaume Labeyrie, Giuseppe Baio +8
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…
Light confinement by local index tailoring in inhomogeneous dielectrics
I. Krešić, K. G. Makris, S. Rotter
The engineering of light confinement is a topic with a long history in optics and with significant implications for the control of light-matter interaction. In inhomogeneous and di…
Self-ordering and cavity cooling using a train of ultrashort pulses
Valentin Torggler, Ivor Krešić, Ticijana Ban +1
A thin atomic gas in an optical resonator exhibits a phase transition from a homogeneous density to crystalline order when laser illuminated orthogonal to the resonator axis. We st…
Magnetic Phase Diagram of Light-mediated Spin Structuring in Cold Atoms
Guillaume Labeyrie, Ivor Kresic, Gordon R. M. Robb +3
When applying a red-detuned retro-reflected laser beam to a large cloud of cold atoms, we observe the spontaneous formation of 2D structures in the transverse plane corresponding t…
Thick-medium model of transverse pattern formation in optically excited cold two-level atoms with a feedback mirror
W. J. Firth, I. Kresic, G. Labeyrie +2
We study a pattern forming instability in a laser driven optically thick cloud of cold two-level atoms with a planar feedback mirror. A theoretical model is developed, enabling a f…
Superradiance in a Large and Dilute Cloud of Cold Atoms in the Linear-Optics Regime
Michelle O. Araújo, Ivor Kresic, Robin Kaiser +1
Superradiance has been extensively studied in the 1970s and 1980s in the regime of superfluores-cence, where a large number of atoms are initially excited. Cooperative scattering i…