350 citations · 957 across the 25 of their papers we have counts for
25 papers
Tunable-Size Unruh-DeWitt Detector in a Multimode Cavity
Simon Brunner, Farokh Mivehvar, Helmut Ritsch +1
Quantum simulators based on Bose-Einstein condensates (BECs) provide a powerful platform to study relativistic quantum-field phenomena in the lab and in particular emulate relativi…
Driven-Dissipative Landau Polaritons: Two Highly Nonlinearly-Coupled Quantum Harmonic Oscillators
Farokh Mivehvar
Landau levels (LLs) are the massively-degenerate discrete energy spectrum of a charged particle in a transverse magnetic field and lie at the heart of many intriguing phenomena suc…
Nonequilibrium Nonlinear Effects and Dynamical Boson Condensation in a Driven-Dissipative Wannier-Stark Lattice
Arkadiusz Kosior, Karol Gietka, Farokh Mivehvar +1
Driven-dissipative light-matter systems can exhibit collective nonequilibrium phenomena due to loss and gain processes on the one hand and effective photon-photon interactions on t…
Rotational Superradiance in a Time-Reversal Symmetry-Broken Quantum Gas inside an Optical Cavity
Natalia Masalaeva, Farokh Mivehvar
Appearance of quantized vortices in a superfluid and a Bose-Einstein condensate (BEC) stems from their nontrivial response to broken time-reversal symmetry (TRS). Here we show that…
Conventional and unconventional Dicke models: Multistabilities and nonequilibrium dynamics
Farokh Mivehvar
The Dicke model describes the collective behavior of a sub-wavelength--size ensemble of two-level atoms (i.e., spin-1/2) interacting identically with a single quantized radiation f…
Tuning photon-mediated interactions in a multimode cavity: from supersolid to insulating droplets hosting phononic excitations
Natalia Masalaeva, Helmut Ritsch, Farokh Mivehvar
Ultracold atoms trapped in laser-generated optical lattices serve as a versatile platform for quantum simulations. However, as these lattices are infinitely stiff, they do not allo…
Density-wave ordering in a unitary Fermi gas with photon-mediated interactions
Victor Helson, Timo Zwettler, Farokh Mivehvar +5
A density wave (DW) is a fundamental type of long-range order in quantum matter tied to self-organization into a crystalline structure. The interplay of DW order with superfluidity…
Nonequilibrium phases of ultracold bosons with cavity-induced dynamic gauge fields
Arkadiusz Kosior, Helmut Ritsch, Farokh Mivehvar
Gauge fields are a central concept in fundamental theories of physics, and responsible for mediating long-range interactions between elementary particles. Recently, it has been pro…
Crystalline Phases of Laser-Driven Dipolar Bose-Einstein Condensates
Chinmayee Mishra, Stefan Ostermann, Farokh Mivehvar +1
Although crystallization is a ubiquitous phenomenon in nature, crystal formation and melting still remain fascinating processes with several open questions yet to be addressed. In…
Open Quantum-System Simulation of Faraday's Induction Law via Dynamical Instabilities
Elvia Colella, Arkadiusz Kosior, Farokh Mivehvar +1
We propose a novel type of a Bose-Hubbard ladder model based on an open quantum-gas--cavity-QED setup to study the physics of dynamical gauge potentials. Atomic tunneling along opp…
Cavity QED with Quantum Gases: New Paradigms in Many-Body Physics
Farokh Mivehvar, Francesco Piazza, Tobias Donner +1
We review the recent developments and the current status in the field of quantum-gas cavity QED. Since the first experimental demonstration of atomic self-ordering in a system comp…
Many-Body Phases of a Planar Bose-Einstein Condensate with Cavity-Induced Spin-Orbit Coupling
Stefan Ostermann, Helmut Ritsch, Farokh Mivehvar
We explore the many-body phases of a two-dimensional Bose-Einstein condensate with cavity-mediated dynamic spin-orbit coupling. By the help of two transverse non-interfering, count…
Cavity-enhanced magnetometer with a spinor Bose-Einstein condensate
Karol Gietka, Farokh Mivehvar, Thomas Busch
We propose a novel type of composite light-matter magnetometer based on a transversely driven multi-component Bose-Einstein condensate coupled to two distinct electromagnetic modes…
Spin and density self-ordering in dynamic polarization gradients fields
Natalia Masalaeva, Wolfgang Niedenzu, Farokh Mivehvar +1
We study the zero-temperature quantum phase diagram for a two-component Bose-Einstein condensate in an optical cavity. The two atomic spin states are Raman coupled by two transvers…
The Hofstadter Butterfly in a Dynamic Cavity-Induced Synthetic Magnetic Field
Elvia Colella, Farokh Mivehvar, Francesco Piazza +1
Energy bands of electrons in a square lattice potential threaded by a uniform magnetic field exhibit a fractal structure known as the Hofstadter butterfly. Here we study a Fermi ga…
Emergent Quasicrystalline Symmetry in Light-Induced Quantum Phase Transitions
Farokh Mivehvar, Helmut Ritsch, Francesco Piazza
The discovery of quasicrystals with crystallographically forbidden rotational symmetries has changed the notion of the ordering in materials, yet little is known about the dynamica…
A supersolid-based gravimeter in a ring cavity
Karol Gietka, Farokh Mivehvar, Helmut Ritsch
We propose a novel type of composite light-matter interferometer based on a supersolid-like phase of a driven Bose-Einstein condensate coupled to a pair of degenerate counterpropag…
Antiferromagnetic self-ordering of a Fermi gas in a ring cavity
Elvia Colella, Stefan Ostermann, Wolfgang Niedenzu +2
We explore the density and spin self-ordering of driven spin- collisionless fermionic atoms coupled to the electromagnetic fields of a ring resonator. The two spin states are…
Cavity-quantum-electrodynamical toolbox for quantum magnetism
Farokh Mivehvar, Helmut Ritsch, Francesco Piazza
The recent experimental observation of spinor self-ordering of ultracold atoms in optical resonators has set the stage for the exploration of emergent magnetic orders in quantum-ga…
Cavity-induced emergent topological spin textures in a Bose Einstein condensate
Stefan Ostermann, Hon-Wai Lau, Helmut Ritsch +1
The coupled nonlinear dynamics of ultracold quantum matter and electromagnetic field modes in an optical resonator exhibits a wealth of intriguing collective phenomena. Here we stu…
Driven-Dissipative Supersolid in a Ring Cavity
Farokh Mivehvar, Stefan Ostermann, Francesco Piazza +1
Supersolids are characterized by the counter-intuitive coexistence of superfluid and crystalline order. Here we study a supersolid phase emerging in the steady state of a driven-di…
Disorder-Driven Density and Spin Self-Ordering of a Bose-Einstein Condensate in a Cavity
Farokh Mivehvar, Francesco Piazza, Helmut Ritsch
We study spatial spin and density self-ordering of a two-component Bose-Einstein condensate via collective Raman scattering into a linear cavity mode. The onset of the Dicke superr…
A Superradiant Topological Peierls Insulator inside an Optical Cavity
Farokh Mivehvar, Helmut Ritsch, Francesco Piazza
We consider a spinless ultracold Fermi gas tightly trapped along the axis of an optical resonator and transversely illuminated by a laser closely tuned to a resonator mode. At a ce…
Enhanced stripe phases in spin-orbit-coupled Bose-Einstein condensates in ring cavities
Farokh Mivehvar, David L. Feder
The coupled dynamics of the atom and photon fields in optical ring cavities with two counter-propagating modes give rise to both spin-orbit interactions as well as long-ranged inte…