10 citations · 13 across the 5 of their papers we have counts for
6 papers
Spacetime Dynamics of Altermagnetic Magnons
Ali Emami Kopaei, Karthik Subramaniam Eswaran, Krzysztof Wohlfeld
Distinguishing altermagnetism from conventional ferromagnetism and antiferromagnetism typically relies on momentum-space probes. Here, we show that the real-space spreading of a lo…
Aspects of quantum geometry in photonic time crystals
Karthik Subramaniam Eswaran, Ali Emami Kopaei, Krzysztof Sacha
We develop a geometric description of quantum light in photonic time crystals on the SU(1,1) coherent-state manifold. In a projective picture, the evolution of each mode appears as…
Anderson Localization in Photonic Time Crystals
Karthik Subramaniam Eswaran, Ali Emami Kopaei, Krzysztof Sacha
Solutions of the wave equations for time-independent disordered media can exhibit Anderson localization where instead of wave propagation we observe their localization around diffe…
Towards Timetronics with Photonic Systems
Ali Emami Kopaei, Karthik Subramaniam Eswaran, Arkadiusz Kosior +5
Periodic driving of particles can create crystalline structures in their dynamics. Such systems can be used to study solid-state physics phenomena in the time domain. In addition,…
Topologically protected quantized changes of the distance between atoms
Ali Emami Kopaei, Krzysztof Giergiel, Krzysztof Sacha
Thouless pumping enables the transport of particles in a one-dimensional periodic potential if the potential is slowly and periodically modulated in time. The change in the positio…
Topological Molecules and Topological Localization of a Rydberg Electron on a Classical Orbit
Ali Emami Kopaei, Xuedong Tian, Krzysztof Giergiel +1
It is common knowledge that atoms can form molecules if they attract each other. Here, we show that it is possible to create molecules where bound states of the atoms are not the r…