4 papers · 1 filter
Collective Quantum State Preparation Is Nonadditive
Lin Zhu, Ranyiliu Chen, Xin Wang +1
Quantum state preparation is a basic primitive of quantum computation and control, but its resource cost is usually analyzed for one target state or under an independent-copy const…
Causal-Class Hierarchies in Coherence-Constrained Channel Transformation
Lin Zhu, Benchi Zhao, Xuanqiang Zhao +3
Higher-order quantum transformations allow multiple channel uses to be combined through different causal architectures, from parallel and fixed-order sequential networks to general…
Analytic Qubit Separation between POVMs and Projective Measurements
Lin Zhu, Ranyiliu Chen, Xin Wang +1
Generalized measurements can be implemented projectively after enlarging the Hilbert space, but this dilation changes the available local dimension. We construct a Bell functional…
Programmable Open Quantum Systems
Mingrui Jing, Mengbo Guo, Lin Zhu +2
Programmability is a unifying paradigm for enacting families of quantum transformations via fixed processors and program states, with a fundamental role and broad impact in quantum…