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Quantum information theory
Optimal Hamiltonian recognition of unknown quantum dynamics
Identifying unknown Hamiltonians from their quantum dynamics is a pivotal challenge in quantum technologies and fundamental physics. In …
Chengkai Zhu
,
Shuyu He
,
Yu-Ao Chen
,
Lei Zhang
,
Xin Wang
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DOI
Protocols and Trade-Offs of Quantum State Purification
Efficient estimation of nonlinear functions of quantum states is crucial for various key tasks in quantum computing, such as …
Hongshun Yao
,
Yingjian Liu
,
Tengxiang Lin
,
Xin Wang
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DOI
Hypothesis testing of symmetry in quantum dynamics
Symmetry plays a crucial role in quantum physics, dictating the behavior and dynamics of physical systems. In this paper, We develop a …
Yu-Ao Chen
,
Chenghong Zhu
,
Keming He
,
Yingjian Liu
,
Xin Wang
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DOI
Amortized Stabilizer Rényi Entropy of Quantum Dynamics
Unraveling the secrets of how much nonstabilizerness a quantum dynamic can generate is crucial for harnessing the power of magic …
Chengkai Zhu
,
Yu-Ao Chen
,
Zanqiu Shen
,
Zhiping Liu
,
Zhan Yu
,
Xin Wang
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DOI
Optimal unilocal virtual quantum broadcasting
Quantum broadcasting is central to quantum information processing and characterizes the correlations within quantum states. …
Hongshun Yao
,
Xia Liu
,
Chengkai Zhu
,
Xin Wang
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DOI
Reversing Unknown Quantum Processes via Virtual Combs for Channels with Limited Information
The inherent irreversibility of quantum dynamics for open systems poses a significant barrier to the inversion of unknown quantum …
Chengkai Zhu
,
Yin Mo
,
Yu-Ao Chen
,
Xin Wang
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DOI
Protocols and Trade-Offs of Quantum State Purification
Quantum state purification plays a pivotal role in quantum communication and quantum computation, aiming to recover the purified state …
Hongshun Yao
,
Yu-Ao Chen
,
Erdong Huang
,
Kaichu Chen
,
Xin Wang
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DOI
Circuit Knitting Faces Exponential Sampling Overhead Scaling Bounded by Entanglement Cost
Abstract Circuit knitting, a method for connecting quantum circuits across multiple processors to simulate nonlocal quantum operations, …
Mingrui Jing
,
Chengkai Zhu
,
Xin Wang
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DOI
Estimate distillable entanglement and quantum capacity by squeezing useless entanglement
Quantum Internet relies on quantum entanglement as a fundamental resource for secure and efficient quantum communication, reshaping …
Chengkai Zhu
,
Chenghong Zhu
,
Xin Wang
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DOI
Reversible Entanglement Beyond Quantum Operations
We introduce a reversible theory of exact entanglement manipulation by establishing a necessary and sufficient condition for state …
Xin Wang
,
Yu-Ao Chen
,
Lei Zhang
,
Chenghong Zhu
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DOI
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