65 citations · 265 across the 10 of their papers we have counts for
10 papers
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,…
Symmetric inseparability and number entanglement in charge conserving mixed states
Zhanyu Ma, Cheolhee Han, Yigal Meir +1
We explore sufficient conditions for inseparability in mixed states with a globally conserved charge, such as a particle number. We argue that even separable states may contain ent…
Multi-impurity chiral Kondo model: correlation functions and anyon fusion rules
Dor Gabay, Cheolhee Han, Pedro L. S. Lopes +2
The multichannel Kondo model supports effective anyons on the partially screened impurity, as suggested by its fractional impurity entropy. It was recently demonstrated for the mul…
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…