7 papers
Unified Framework for Quantum Resource Recycling via Instrument-Dependent Back-action
Zinuo Cai, Jianxin Song, Changliang Ren
Accurate characterization of measurement backaction is crucial for understanding the limits of reusing quantum correlations in sequential scenarios. Here, we develop a unified quan…
Locality Implies Complex Numbers in Quantum Mechanics
Tianfeng Feng, Changliang Ren, Vlatko Vedral
We show that the presented real-number quantum theories, compatible with the independent source assumption, require the inclusion of a nonlocal map. This means that if the independ…
Efficient Identification the Inequivalence of Mutually Unbiased Bases via Finite Operators
Jianxin Song, Zhen-Peng Xu, Changliang Ren
The structural characterization of high-dimensional mutually unbiased bases (MUBs) by classifying MUBs subsets remains a major open problem. The existing methods not only fail to c…
Enhanced Nonreciprocal Quantum Battery Performance via Nonlinear Two-Photon Driving
Luxin Xu, Changliang Ren
Quantum batteries have attracted significant attention as efficient quantum energy storage devices.In this work, we propose a nonlinear two-photon driving quantum battery model fea…
Complementarity Reveals Entanglement Sharing in Sequential Quantum Measurements
Zinuo Cai, Changliang Ren
We investigate entanglement sharing in a two-qubit sequential measurement scenario using three complementary classical correlation metrics: mutual information (I), sum of condition…
Quantum energy teleportation via random bi-partitioning in N-qubit systems
Zhirong Xun, Changliang Ren
This study investigates quantum energy teleportation (QET) using stochastic bi-partitioning in an body Hamiltonian system. In this protocol, project measurements are performed…