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Quantum information theory
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
,
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
Virtual Quantum Markov Chains
Quantum Markov chains generalize classical Markov chains for random variables to the quantum realm and exhibit unique inherent …
Yu-Ao Chen
,
Chengkai Zhu
,
Keming He
,
Mingrui Jing
,
Xin Wang
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Computable and Faithful Lower Bound for Entanglement Cost
Abstract Quantum entanglement is a crucial resource in quantum information processing. However, quantifying the entanglement required …
Xin Wang
,
Mingrui Jing
,
Chengkai Zhu
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DOI
Power of Quantum Measurement in Simulating Unphysical Operations
The manipulation of quantum states through linear maps beyond quantum operations has many important applications in various areas of …
Xuanqiang-Zhao
,
Lei Zhang
,
Benchi Zhao
,
Xin Wang
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DOI
Efficient information recovery from Pauli noise via classical shadow
The rapid advancement of quantum computing has led to an extensive demand for effective techniques to extract classical information …
Yifei Chen
,
Zhan Yu
,
Chenghong Zhu
,
Xin Wang
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