3 papers
quant-ph2024
Probing entanglement scaling across a quantum phase transition on a quantum computer
Qiang Miao, Tianyi Wang, Kenneth R. Brown +2
The investigation of strongly-correlated quantum matter is difficult due to the curse of dimensionality and intricate entanglement structures. These challenges are particularly pro…
cond-mat.str-el2024
Scaling of contraction costs for entanglement renormalization algorithms including tensor Trotterization and variational Monte Carlo
Thomas Barthel, Qiang Miao
The multi-scale entanglement renormalization ansatz (MERA) is a hierarchical class of tensor network states motivated by the real-space renormalization group. It is used to simulat…
quant-ph2024
Equivalence of cost concentration and gradient vanishing for quantum circuits: An elementary proof in the Riemannian formulation
Qiang Miao, Thomas Barthel
The optimization of quantum circuits can be hampered by a decay of average gradient amplitudes with increasing system size. When the decay is exponential, this is called the barren…