122 citations · 613 across the 15 of their papers we have counts for
3 papers · 1 filter
Matrix Product Density Operators: when do they have a local parent Hamiltonian?
Chi-Fang Chen, Kohtaro Kato, Fernando G. S. L. Brandão
We study whether one can write a Matrix Product Density Operator (MPDO) as the Gibbs state of a quasi-local parent Hamiltonian. We conjecture this is the case for generic MPDO and…
Concentration for random product formulas
Chi-Fang Chen, Hsin-Yuan Huang, Richard Kueng +1
Quantum simulation has wide applications in quantum chemistry and physics. Recently, scientists have begun exploring the use of randomized methods for accelerating quantum simulati…
Hierarchy of linear light cones with long-range interactions
Minh C. Tran, Chi-Fang Chen, Adam Ehrenberg +6
In quantum many-body systems with local interactions, quantum information and entanglement cannot spread outside of a linear light cone, which expands at an emergent velocity analo…