6 papers · 1 filter
Post-Selection Probability and Fidelity of Bidirectional Teleportation
Ning Sun, Lei Feng, Pengfei Zhang
Understanding the scrambling of quantum information is central to many areas of quantum physics, including quantum thermalization, entanglement growth, and quantum information proc…
Unitary Designs from Two Chaotic Hamiltonians and a Random Pauli Operation
Ning Sun, Pengfei Zhang
The realization of unitary designs is of fundamental interest in quantum science and typically requires the ability to implement structured quantum circuits. Recent developments ha…
Stabilizer Rényi Entropy and its Transition in the Coupled Sachdev-Ye-Kitaev Model
Pengfei Zhang, Shuyan Zhou, Ning Sun
Quantum entanglement and quantum magic are two distinct fundamental resources that enable quantum systems to exhibit complex phenomena beyond the capabilities of classical computer…
Connecting Magic Dynamics in Thermofield Double States to Spectral Form Factors
Ning Sun, Pengfei Zhang
Under unitary evolution, chaotic quantum systems initialized in simple states rapidly develop high complexity, precluding any efficient classical description. Quantum chaos is trad…
Exact Relation Between Wehrl-Rényi Entropy and Many-Body Entanglement
Pengfei Zhang, Chen Xu, Peng Zhang
Quantum entanglement is key to understanding correlations and emergent phenomena in quantum many-body systems. For qubits (distinguishable spin- particles) in a pure quant…
Universal Bound States in Long-range Spin Chains with an Impurity
Ning Sun, Lei Feng, Pengfei Zhang
Understanding how quasi-particles interact with impurities is crucial for unveiling novel properties of quantum many-body systems. A prominent example is the enhanced scattering be…