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12 papers · 2 filters
Insufficiency of Pure-State Ensembles in Characterizing Transformations of Entangled States under LOCC
C. L. Liu, Baoqing Sun, D. L. Zhou
The conditions for transforming pure entangled states under local operations and classical communication (LOCC) are well understood. A natural question then arises: Can we determin…
Sub-Bath Cooling in Bosonic Systems: Gaussian Constraints and Non-Gaussian Enhancements
Wen-Han Png, Xueyuan Hu, Valerio Scarani
Cooling quantum systems with finite resources is a central task in quantum technologies and has been extensively explored in discrete-variable settings. As continuous-variable (CV)…
Survival of Hermitian Criticality in the Non-Hermitian Framework
Fei Wang, Guoying Liang, Zecheng Zhao +3
In this work, we investigate many-body phase transitions in a one-dimensional anisotropic XY model subject to a complex-valued transverse field. Within the biorthogonal framework,…
Scalable protocol to coherence estimation from scarce data: Theory and experiment
Qi-Ming Ding, Ting Zhang, Hui Li +1
Key quantum features like coherence are the fundamental resources enabling quantum advantages and ascertaining their presence in quantum systems is crucial for developing quantum t…
Compact non-degenerate entangled-photon source and near-infrared-to-telecom quantum teleportation
Xu-Jie Peng, Ling-Xuan Kong, He Lu
The polarization-entangled photon source (PEPS) at non-degenerated wavelengths is pivotal to connect quantum systems working at different wavelengths, with the assistance of quantu…
Dynamical decoupling protection for three-level systems
P. Z. Zhao, Lei Qiao
In addition to the traditional two-level system, the three-level system serves as another important elemental building block for the manipulation of qubits. However, the quantum in…