Xiao Chen - quantum entanglement

Entanglement entropy provides a quantum information perspective to understand the long-distance properties of correlated many-body state and can be used to classify strongly correlated phases of matter in and out of equilibrium.

We study the entanglement scaling of 2+1 dimensional critical systems. Our main results include:

The universal subleading correction term of entanglement entropy of various 2+1 dimensional critical system defined on spatial torus.
The entanglement entropy and mutual information of quantum Lifshitz model.
The entanglement Aharonov-Bohm effect for critical system. This method is further used to detect the low energy excitation of spin liquid on Kagome lattice.

We explore the entanglement scaling of one classical of one dimensional critical wave function which is the ground state of quantum spin chain model with dynamical exponent z>1.

The entanglement scaling of non-unitary dynamics can be found here.

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