39 citations · 92 across the 10 of their papers we have counts for
10 papers
Exceptional points and phase transitions in non-Hermitian binary systems
Amir Rahmani, Andrzej Opala, Michał Matuszewski
Recent study demonstrated that steady states of a polariton system may show a first-order dissipative phase transition with an exceptional point that appears as an endpoint of the…
Non-Hermitian synthetic lattices with light-matter coupling
Amir Rahmani, Mateusz Kędziora, Andrzej Opala +1
We propose that light-matter coupling can be used to realize synthetic lattices. In particular, we consider a one-dimensional chain of exciton-photon sites to create a comb lattice…
Topologically driven Rabi-oscillating interference dislocation
Amir Rahmani, David Colas, Nina Voronova +3
Quantum vortices are the quantized version of classical vortices. Their center is a phase singularity or vortex core around which the flow of particles as a whole circulates and is…
Coupled quantum vortex kinematics and Berry curvature in real space
Lorenzo Dominici, Amir Rahmani, David Colas +6
The Berry curvature provides a powerful tool to unify several branches of science through their geometrical aspect: topology, energy bands, spin and vector fields. While quantum de…
Shaping the topology of light with a moving Rabi-oscillating vortex
Lorenzo Dominici, Nina Voronova, David Colas +8
Quantum vortices are the analogue of classical vortices in optics, Bose-Einstein condensates, superfluids and superconductors, where they provide the elementary mode of rotation an…
Temporal shaping and time varying orbital angular momentum of displaced vortices
Fazele Hosseini, Mohammad A. Sadeghzadeh, Amir Rahmani +2
The fundamental mode of rotation in quantum fluids is given by a vortex, whose quantized value yields the orbital angular momentum (OAM) per particle. If the vortex is displaced (o…
Detuning control of Rabi vortex oscillations in light matter coupling
Amir Rahmani
We study analytically the dynamics of vortices in strongly coupled exciton--photon fields in the presence of energy detuning. We derive equations for the vortex core velocity and m…
Full-Bloch beams and ultrafast Rabi-rotating vortices
Lorenzo Dominici, David Colas, Antonio Gianfrate +8
Strongly-coupled quantum fields, such as multi-component atomic condensates, optical fields and polaritons, are remarkable systems where the simple dynamics of coupled oscillators…
Polaritonic linear dynamic in Keldysh formalism
A. Rahmani, M. A. Sadeghzadeh
We study the dynamic of polaritons in the Keldysh functional formalism. Dissipation is considered through the coupling of the exciton and photon fields to two independent photonic…
Polaritonic Rabi and Josephson Oscillations
A. Rahmani, F. P. Laussy
The dynamics of coupled condensates is a wide-encompassing problem with relevance to superconductors, BECs in traps, superfluids, etc. Here, we provide a unified picture of this fu…