10 citations · 29 across the 15 of their papers we have counts for
15 papers
Distilling Qubit Unitary Operations: A No-Go Theorem and Minimal Realization
Jiayi Zhao, Yu-Ao Chen, Guocheng Zhen +3
Quantum gates executed on physical hardware are inevitably degraded by environmental noise. While state purification effectively distills static quantum resources, the dynamic exec…
Structure, Optimality, and Symmetry in Shadow Unitary Inversion
Guocheng Zhen, Yu-Ao Chen, Mingrui Jing +3
Reversing unitary operations is a key task in quantum computing and quantum control. In this work, we introduce and develop the framework of shadow unitary inversion, a relaxed var…
Power and limitations of distributed quantum state purification
Benchi Zhao, Yu-Ao Chen, Xuanqiang Zhao +3
Quantum state purification protocols, which mitigate noise by converting multiple copies of noisy quantum states into fewer copies with a lower noise level, have applications in qu…
Predicting symmetries of quantum dynamics with optimal samples
Masahito Hayashi, Yu-Ao Chen, Chenghong Zhu +1
Identifying symmetries in quantum dynamics, such as identity or time-reversal invariance, is a crucial challenge with profound implications for quantum technologies. We introduce a…
Optimal Hamiltonian recognition of unknown quantum dynamics
Chengkai Zhu, Shuyu He, Yu-Ao Chen +2
Identifying unknown Hamiltonians from their quantum dynamics is a pivotal challenge in quantum technologies. In this paper, we introduce Hamiltonian recognition, a framework that b…
Hypothesis testing of symmetry in quantum dynamics
Yu-Ao Chen, Chenghong Zhu, Keming He +2
Symmetry plays a crucial role in quantum physics, dictating the behavior and dynamics of physical systems. In this paper, we develop a hypothesis-testing framework for quantum dyna…
Quantum Entanglement Allocation through a Central Hub
Yu-Ao Chen, Xia Liu, Chenghong Zhu +3
Establishing a fully functional quantum internet relies on the efficient allocation of multipartite entangled states, which enables advanced quantum communication protocols, secure…
Amortized Stabilizer Rényi Entropy of Quantum Dynamics
Chengkai Zhu, Yu-Ao Chen, Zanqiu Shen +3
Unraveling the secrets of how much nonstabilizerness a quantum dynamic can generate is crucial for harnessing the power of magic states, the essential resources for achieving quant…
Protocols and Trade-Offs of Quantum State Purification
Hongshun Yao, Yu-Ao Chen, Erdong Huang +3
Quantum state purification is crucial in quantum communication and computation, aiming to recover a purified state from multiple copies of an unknown noisy state. This work introdu…
Quantum Algorithm for Reversing Unknown Unitary Evolutions
Yu-Ao Chen, Yin Mo, Yingjian Liu +2
Reversing an unknown quantum evolution is of central importance to quantum information processing and fundamental physics, yet it remains a formidable challenge as conventional met…
Parameterized quantum comb and simpler circuits for reversing unknown qubit-unitary operations
Yin Mo, Lei Zhang, Yu-Ao Chen +3
Quantum combs play a vital role in characterizing and transforming quantum processes, with wide-ranging applications in quantum information processing. However, obtaining the expli…
Reversing Unknown Quantum Processes via Virtual Combs for Channels with Limited Information
Chengkai Zhu, Yin Mo, Yu-Ao Chen +1
The inherent irreversibility of quantum dynamics for open systems poses a significant barrier to the inversion of unknown quantum processes. To tackle this challenge, we propose th…
Virtual Quantum Markov Chains
Yu-Ao Chen, Chengkai Zhu, Keming He +2
Quantum Markov chains generalize classical Markov chains for random variables to the quantum realm and exhibit unique inherent properties, making them an important feature in quant…
Mitigating Quantum Errors via Truncated Neumann Series
Kun Wang, Yu-Ao Chen, Xin Wang
Quantum gates and measurements on quantum hardware are inevitably subject to hardware imperfections that lead to quantum errors. Mitigating such unavoidable errors is crucial to ex…
Measurement Error Mitigation via Truncated Neumann Series
Kun Wang, Yu-Ao Chen, Xin Wang
Measurements on near-term quantum processors are inevitably subject to hardware imperfections that lead to readout errors. Mitigation of such unavoidable errors is crucial to bette…