8 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…
No Cloning of Quantum Ensembles
Zhenyu Du, Siyuan Cheng, Qi Zhao +2
Modern quantum physics now enables control of quantum systems at the level of individual trajectories, opening a new frontier that links quantum information theory, quantum many-bo…
Bypassing the protection-sensitivity incompatibility in quantum-error-corrected metrology via asymmetric codes
Junjie Chen, Rui Luo, Zhenyu Du +3
Quantum metrology surpasses the classical precision limit by encoding signals in a probe state such that signal contributions are indistinguishable and their phases accumulate cohe…
Complexity-driven transitions in quantum observation
Zhenyu Du, Siyuan Cheng, Han Ye +3
Observing the physical world is a foundational pursuit in science. In the quantum realm, however, observation necessitates a fundamental quantum-to-classical conversion: destructiv…
Scalable self-testing of generic multipartite quantum states
Jinchang Liu, Elias X. Huber, Zhenyu Du +2
Characterizing large quantum systems with minimal assumptions is a central challenge in quantum information science. Self-testing provides the strongest form of certification by id…
Approximate Quantum Error Correction with 1D Log-Depth Circuits
Guoding Liu, Zhenyu Du, Zi-Wen Liu +1
Efficient and high-performance quantum error correction is essential for achieving fault-tolerant quantum computing. Low-depth random circuits offer a promising approach to identif…