Quantum information theory

Protocols and Trade-Offs of Quantum State Purification
Quantum state purification is crucial in quantum communication and computation, aiming to recover a purified state from multiple copies …
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Protocols and Trade-Offs of Quantum State Purification
Virtual Quantum Markov Chains
Quantum Markov chains generalize classical Markov chains for random variables to the quantum realm and exhibit unique inherent …
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Virtual Quantum Markov Chains
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 …
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Hypothesis testing of symmetry in quantum dynamics
No-Go Theorems for Universal Quantum State Purification via Classically Simulable Operations
Quantum state purification, a process that aims to recover a state closer to a system’s principal eigenstate from multiple copies …
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No-Go Theorems for Universal Quantum State Purification via Classically Simulable Operations
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 …
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Power of Quantum Measurement in Simulating Unphysical Operations
Reversible Entanglement Beyond Quantum Operations
We introduce a reversible theory of exact entanglement manipulation by establishing a necessary and sufficient condition for state …
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Reversible Entanglement Beyond Quantum Operations
Circuit Knitting Faces Exponential Sampling Overhead Scaling Bounded by Entanglement Cost
Circuit knitting, a method for connecting quantum circuits across multiple processors to simulate nonlocal quantum operations, is a …
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Circuit Knitting Faces Exponential Sampling Overhead Scaling Bounded by Entanglement Cost
Nonlinear functions of quantum states
Efficient estimation of nonlinear functions of quantum states is crucial for various key tasks in quantum computing, such as …
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Nonlinear functions of quantum states
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 …
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Amortized Stabilizer Rényi Entropy of Quantum Dynamics
Optimal unilocal virtual quantum broadcasting
Quantum broadcasting is central to quantum information processing and characterizes the correlations within quantum states. …
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Optimal unilocal virtual quantum broadcasting