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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…
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…