65 citations · 265 across the 10 of their papers we have counts for
8 papers · 1 filter
Identifying an environment-induced localization transition from entropy and conductance
Zhanyu Ma, Cheolhee Han, Yigal Meir +1
Environment-induced localization transitions (LT) occur when a small quantum system interacts with a bath of harmonic oscillators. At equilibrium, LTs are accompanied by an entropy…
Measuring topological entanglement entropy using Maxwell relations
Sarath Sankar, Eran Sela, Cheolhee Han
Topological entanglement entropy (TEE) is a key diagnostic of topological order, allowing to detect the presence of Abelian or non-Abelian anyons. However, there are currently no p…
Realistic protocol to measure entanglement at finite temperatures
Cheolhee Han, Yigal Meir, Eran Sela
It is desirable to relate entanglement of many-body systems to measurable observables. In systems with a conserved charge, it was recently shown that the number entanglement entrop…
Fractional Mutual Statistics on Integer Quantum Hall Edges
June-Young M. Lee, Cheolhee Han, H. -S. Sim
Fractional charge and statistics are hallmarks of low-dimensional interacting systems such as fractional quantum Hall (QH) systems. Integer QH systems are regarded noninteracting,…
Fractional entropy of multichannel Kondo systems from conductance-charge relations
Cheolhee Han, Zubair Iftikhar, Yaakov Kleeorin +5
Fractional entropy is a signature of nonlocal degrees of freedom, such as Majorana zero modes or more exotic non-Abelian anyons. Although direct experimental measurements remain ch…
Ultrafast energy relaxation of quantum dot-generated 2D hot electrons
Dongsung T. Park, Dongkun Kim, Uhjin Kim +8
Through a series of transverse magnetic focusing experiments, we show that hot electrons in a two-dimensional electron gas system undergo an ultrafast relaxation when generated by…
Negative Excess Shot Noise by Anyon Braiding
Byeongmok Lee, Cheolhee Han, H. -S. Sim
Anyonic fractional charges have been detected by autocorrelation shot noise at a quantum point contact (QPC) between two fractional quantum Hall edges. We find that the autoc…
Topological vacuum bubble by anyon braiding
Cheolhee Han, Jinhong Park, Yuval Gefen +1
According to a basic rule of fermionic and bosonic many-body physics, known as the linked cluster theorem, physical observables are not affected by vacuum bubbles, which represent…