Quantum information theory

Universal quantum state purification with energy-preserving operations
Quantum state purification, which operates not by identifying and correcting specific errors but by repeatedly projecting multiple …
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Universal quantum state purification with energy-preserving operations
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 of an …
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No-Go Theorems for Universal Quantum State Purification via Classically Simulable Operations
Entanglement cost of bipartite quantum channel discrimination under positive partial transpose operations
Quantum channel discrimination is a fundamental task in quantum information processing. In the one-shot regime, discrimination between …
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Entanglement cost of bipartite quantum channel discrimination under positive partial transpose operations
Power and Limitations of Distributed Quantum State Purification
Quantum state purification protocols, which mitigate noise by converting multiple copies of noisy quantum states into fewer copies with …
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Power and Limitations of Distributed Quantum State Purification
Simulation of Adjoints and Petz Recovery Maps for Unknown Quantum Channels
Transformations of quantum channels, such as the transpose, complex conjugate, and adjoint, are fundamental to quantum information …
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Simulation of Adjoints and Petz Recovery Maps for Unknown Quantum Channels
Efficient implementation of arbitrary Hermitian-preserving and trace-preserving maps
Quantum control has been a cornerstone of quantum information science, driving major advances in quantum computing, quantum …
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Efficient implementation of arbitrary Hermitian-preserving and trace-preserving maps
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 …
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Optimal Hamiltonian recognition of unknown quantum dynamics
Programmable Open Quantum Systems
Programmability is a unifying paradigm for enacting families of quantum transformations via fixed processors and program states, with a …
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Programmable Open Quantum Systems
Quantum Fidelity Estimation in the Resource Theory of Nonstabilizerness
Quantum fidelity estimation is essential for benchmarking quantum states and processes on noisy quantum devices. While stabilizer …
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Quantum Fidelity Estimation in the Resource Theory of Nonstabilizerness
Structure, Optimality, and Symmetry in Shadow Unitary Inversion
The ability to reverse any unknown unitary operation plays a fundamental role in quantum computing. While existing studies mostly focus …
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Structure, Optimality, and Symmetry in Shadow Unitary Inversion