254 citations · 300 across the 4 of their papers we have counts for
10 papers
Topological lower bound on quantum chaos by entanglement growth
Zongping Gong, Lorenzo Piroli, J. Ignacio Cirac
A fundamental result in modern quantum chaos theory is the Maldacena-Shenker-Stanford upper bound on the growth of out-of-time-order correlators, whose infinite-temperature limit i…
Error bounds for constrained dynamics in gapped quantum systems: Rigorous results and generalizations
Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata +1
In arXiv:2001.03419 we introduce a universal error bound for constrained unitary dynamics within a well-gapped energy band of an isolated quantum system. Here, we provide the full…
Universal Error Bound for Constrained Quantum Dynamics
Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata +1
It is well known in quantum mechanics that a large energy gap between a Hilbert subspace of specific interest and the remainder of the spectrum can suppress transitions from the qu…
Thermodynamic Uncertainty Relation for Arbitrary Initial States
Kangqiao Liu, Zongping Gong, Masahito Ueda
The thermodynamic uncertainty relation (TUR) describes a trade-off relation between nonequilibrium currents and entropy production and serves as a fundamental principle of nonequil…
Lieb-Robinson Bounds on Entanglement Gaps from Symmetry-Protected Topology
Zongping Gong, Naoto Kura, Masatoshi Sato +1
A quantum quench is the simplest protocol to investigate nonequilibrium many-body quantum dynamics. Previous studies on the entanglement properties of quenched quantum many-body sy…
Second-Order Topological Phases in Non-Hermitian Systems
Tao Liu, Yu-Ran Zhang, Qing Ai +4
A -dimensional second-order topological insulator (SOTI) can host topologically protected -dimensional gapless boundary modes. Here we show that a 2D non-Hermitian SOTI…