7 papers
Quantum-classical crossover in fault-tolerant quantum dynamics simulation
Jinzhao Sun, Bozhen Zhou, Jue Xu +28
While quantum computers promise to solve classically intractable problems, identifying the point at which fault-tolerant quantum computation outperforms the best classical algorith…
Provable Quantum Advantage for Dynamical Phase Transition
Jue Xu, Xiao Yuan, Qi Zhao
The universal scaling of critical behavior in phase transitions is a cornerstone of physics. Dynamical quantum phase transitions (DQPTs) are their nonequilibrium analogues: abrupt…
Taming Trotter Errors with Quantum Resources
Xiangran Zhang, Jue Xu, Qi Zhao +1
Quantum simulation is a cornerstone application of quantum computing, yet how fundamental quantum resources--entanglement and non-stabilizerness (``magic")--shape simulation fideli…
Classical Simulation of Noiseless Quantum Dynamics without Randomness
Jue Xu, Chu Zhao, Xiangran Zhang +2
Simulating noiseless quantum dynamics classically faces a fundamental dilemma: tensor-network methods become inefficient as entanglement saturates, while Pauli-truncation approache…
Exponentially Decaying Quantum Simulation Error with Noisy Devices
Jue Xu, Chu Zhao, Junyu Fan +1
Quantum simulation is a promising way toward practical quantum advantage, but noise in current quantum hardware poses a significant obstacle. We prove that not only the physical er…
Error Interference in Quantum Simulation
Boyang Chen, Jue Xu, Qi Zhao +1
Understanding algorithmic error accumulation in quantum simulation is crucial due to its fundamental significance and practical applications in simulating quantum many-body system…