6 papers
Quantum Chaos with a Macroscopic Zero-Mode Sector
Cheryne Jonay, Kun W. Kim, Frank Pollmann +1
Chaotic many-body spectra are expected to densely fill their energy window. We show that constrained spin chains with chiral symmetry evade this expectation by hosting an exponenti…
Geometric Approach to Zero-Memory Quantum Dot Reservoir Computing
Bongsu Kim, Oscar Lee, Sangjun Jeon +1
Physical reservoir computing offers an energy-efficient alternative to conventional neural networks, where the material-specific intrinsic memory capacity in a physical system play…
Path integral approach to quantum thermalization
Alexander Altland, Kun Woo Kim, Tobias Micklitz
We introduce a quasiclassical Green function approach describing the unitary yet irreversible dynamics of quantum systems effectively acting as their own environment. Combining a v…
Mass-invariant universal optical conductivity from quantum geometry
Chang-geun Oh, Sun-Woo Kim, Kun Woo Kim +2
Mass is a defining property of particles, shaping their fundamental nature and interactions. In condensed matter systems, the effective mass of electrons has long been regarded as…
Thermoelectric Transport Driven by Quantum Distance
Chang-geun Oh, Kun Woo Kim, Jun-Won Rhim
The geometric characteristics of Bloch wave functions play a crucial role in electronic transport properties. We show that the thermoelectric performance of materials is governed b…
Thermodynamic uncertainty relations in superconducting junctions
David Christian Ohnmacht, Juan Carlos Cuevas, Wolfgang Belzig +3
Quantum conductors attached to metallic reservoirs have been demonstrated to overcome the thermodynamic uncertainty relation (TUR), a trade-off relation between the amount of dissi…