129 citations · 629 across the 29 of their papers we have counts for
29 papers
Engineering SU()-Symmetric Hubbard Models with Microwave-Shielded Dipolar Molecules
Jing-Lun Li, Ragheed Alhyder, Andreas Schindewolf +3
Ultracold polar molecules provide strong, long-range interactions that microwave shielding makes tunable and nearly nuclear-spin independent, giving an emergent SU() symmetry. H…
Core-Hole Excitation Dynamics of One-Dimensional Ultracold Trapped Fermions
André Becker, Georgios M. Koutentakis, Peter Schmelcher
We investigate the nonequilibrium dynamics of core-hole excitations in a one-dimensional fermionic few-body system consisting of a spin-polarized Fermi bath coupled to a single hea…
Kerr-enhanced amplification of three-wave mixing and emergent masing regimes
Ragheed Alhyder, Rishabh Sahu, Johannes M. Fink +2
Integrated optical microresonators exploiting either second-order () or third-order () nonlinearities have become key platforms for frequency conversion, low-nois…
Two-Body Kapitza-Dirac Scattering of One-Dimensional Ultracold Atoms
André Becker, Georgios M. Koutentakis, Peter Schmelcher
Kapitza-Dirac scattering, the diffraction of matter waves from a standing light field, is widely utilized in ultracold gases, but its behavior in the strongly interacting regime is…
The R-index: A universal metric for evaluating OAM content and mode purity in optical fields
Monika Bahl, Georgios M. Koutentakis, Mikhail Maslov +4
Despite its pivotal role in optical manipulation, high-capacity communications, and quantum information, a general measure of orbital angular momentum (OAM) in structured light rem…
Tunable Field-Linked -wave Interactions in Dipolar Fermi Mixtures
Jing-Lun Li, Georgios M. Koutentakis, Mateja Hrast +3
Spin mixtures of degenerate fermions are a cornerstone of quantum many-body physics, enabling superfluidity, polarons, and rich spin dynamics through -wave scattering resonances…
Bottom-up Analysis of Ro-Vibrational Helical Dichroism
Mateja Hrast, Georgios M. Koutentakis, Mikhail Maslov +1
Helical dichroism (HD) is a proposed method for the resolution of molecular chirality, employing the orbital angular momentum (OAM) of light. Going beyond the conventional assumpti…
Competition of light- and phonon-dressing in microwave-dressed Bose polarons
G. M. Koutentakis, S. I. Mistakidis, F. Grusdt +2
We theoretically investigate the stationary properties of a spin-1/2 impurity immersed in a one-dimensional confined Bose gas. In particular, we consider coherently coupled spin st…
Dynamical probe of the pseudo Jahn-Teller effect in one-dimensional confined fermions
André Becker, Georgios M. Koutentakis, Peter Schmelcher
We investigate the real-time dynamics of a quenched quantum impurity immersed in a one-dimensional ultracold Fermi gas, focusing on the breakdown of the adiabatic Born-Oppenheimer…
Domain-Wall Ferroelectric Polarons in a two-dimensional Rotor Lattice Model
Florian Kluibenschedl, Georgios M. Koutentakis, Ragheed Alhyder +1
We demonstrate the formation of ferroelectric domain-wall polarons in a minimal two-dimensional lattice model of electrons interacting with rotating dipoles. Along the domain-wall,…
Synthetic dimension-induced pseudo Jahn-Teller effect in one-dimensional confined fermions
André Becker, Georgios M. Koutentakis, Peter Schmelcher
We demonstrate the failure of the adiabatic Born-Oppenheimer approximation to describe the ground state of a quantum impurity within an ultracold Fermi gas despite substantial mass…
Theory of angular momentum transfer from light to molecules
Mikhail Maslov, Georgios M. Koutentakis, Mateja Hrast +2
We present a theory describing interaction of structured light, such as light carrying orbital angular momentum, with molecules. The light-matter interaction Hamiltonian we derive…
Spin-charge correlations in finite one-dimensional multi-band Fermi systems
J. M. Becker, G. M. Koutentakis, P. Schmelcher
We investigate spin-charge separation of a spin-1/2 Fermi system confined in a triple well where multiple bands are occupied. We assume that our finite fermionic system is close to…
Rotor Lattice Model of Ferroelectric Large Polarons
Georgios M. Koutentakis, Areg Ghazaryan, Mikhail Lemeshko
We present a minimal model of charge transport in hybrid perovskites, which provides an intuitive explanation for the recently proposed formation of ferroelectric large polarons. W…
Inducing spin-order with an impurity: phase diagram of the magnetic Bose polaron
S. I. Mistakidis, G. M. Koutentakis, F. Grusdt +2
We investigate the formation of magnetic Bose polaron, an impurity atom dressed by spin-wave excitations, in a one-dimensional spinor Bose gas. In terms of an effective potential m…
Radiofrequency spectroscopy of one-dimensional trapped Bose polarons: crossover from the adiabatic to the diabatic regime
S. I. Mistakidis, G. M. Koutentakis, F. Grusdt +2
We investigate the crossover of the impurity-induced dynamics, in trapped one-dimensional Bose polarons subject to radio frequency (rf) pulses of varying intensity, from an adiabat…
Interplay of phase separation and itinerant magnetism for correlated few fermions in a double-well
G. M. Koutentakis, S. I. Mistakidis, P. Schmelcher
We explore the stability of the phase separation phenomenon in few-fermion spin- systems confined in a double-well potential. It is shown that within the SU(2) symmetric case,…
Pump Probe Spectroscopy of Bose Polarons: Dynamical Formation and Coherence
S. I. Mistakidis, G. C. Katsimiga, G. M. Koutentakis +2
We propose and investigate a pump-probe spectroscopy scheme to unveil the time-resolved dynamics of fermionic or bosonic impurities immersed in a harmonically trapped Bose-Einstein…
Many-body quantum dynamics and induced correlations of Bose polarons
S. I. Mistakidis, G. M. Koutentakis, G. C. Katsimiga +2
We study the ground state properties and nonequilibrium dynamics of two spinor bosonic impurities immersed in a one-dimensional bosonic gas upon applying an interspecies interactio…
Dissipative correlated dynamics of a moving impurity immersed in a Bose-Einstein Condensate
S. I. Mistakidis, F. Grusdt, G. M. Koutentakis +1
We unravel the nonequilibrium correlated quantum quench dynamics of an impurity traveling through a harmonically confined Bose-Einstein condensate in one-dimension. For weak repuls…
Renormalization Group Flows in Non-Relativistic Holographic Effective Field Theories
Georgios M. Koutentakis
We develop a formalism with two different UV cutoff scales, one for space and one for time, appropriate for the richer structure of non-Lorentz invariant quantum field theories. In…
Quench Dynamics and Orthogonality Catastrophe of Bose Polarons
S. I. Mistakidis, G. C. Katsimiga, G. M. Koutentakis +2
We monitor the correlated quench induced dynamical dressing of a spinor impurity repulsively interacting with a Bose-Einstein condensate. Inspecting the temporal evolution of the s…
Repulsive Fermi Polarons and Their Induced Interactions in Binary Mixtures of Ultracold Atoms
S. I. Mistakidis, G. C. Katsimiga, G. M. Koutentakis +1
We explore repulsive Fermi polarons in one-dimensional harmonically trapped few-body mixtures of ultracold atoms using as a case example a Li-K mixture. A characterizati…
Many-Body Dissipative Flow of a Confined Scalar Bose-Einstein Condensate Driven by a Gaussian Impurity
G. C. Katsimiga, S. I. Mistakidis, G. M. Koutentakis +2
The many-body dissipative flow induced by a mobile aussian impurity harmonically oscillating within a cigar-shaped Bose-Einstein condensate is investigated. For very {small and lar…