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- Peking UniversityCN326 papers
- Institute of High Energy PhysicsCN193 papers
- Joint Institute for Nuclear ResearchRU187 papers
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- Carnegie Mellon UniversityUS186 papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT183 papers
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- University of Science and Technology of ChinaCN156 papers
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- Seoul National UniversityKR146 papers
10 papers · 2 filters
Effect of three-spin interaction on thermal entanglement in Heisenberg XXZ model
Jing-Heng Fu, Guo-Feng Zhang
The effect of three-spin interaction k on thermal entanglement between alternate qubits is studied using pairwise concurrence C and energy level diagram. It is found that k breaks…
Nonexistence of -qubit unextendible product bases of size
Lin Chen, Dragomir Z Djokovic
It is known that the -qubit system has no unextendible product bases (UPBs) of cardinality , and . On the other hand the -qubit UPBs of cardinality $2^n…
Entangled quantum Otto heat engines based on two-spin systems with the Dzyaloshinski-Moriya interaction
Li-Mei Zhao, Guo-Feng Zhang
We construct an entangled quantum Otto engine based on spin-1/2 systems undergoing Dzyaloshinski-Moriya (DM) interaction within a varying magnetic field. We investigate the influen…
The tensor rank of tensor product of two three-qubit W states is eight
Lin Chen, Shmuel Friedland
We show that the tensor rank of tensor product of two three-qubit W states is not less than eight. Combining this result with the recent result of M. Christandl, A. K. Jensen, and…
Coherence and entanglement measures based on Rényi relative entropies
Huangjun Zhu, Masahito Hayashi, Lin Chen
We study systematically resource measures of coherence and entanglement based on Rényi relative entropies, which include the logarithmic robustness of coherence, geometric coherenc…
Variance-based uncertainty relation for incompatible observers
Xiao Zheng, Guo-Feng Zhang
Based on mixedness definition as M=1-tr(\r{ho}^2), we obtain a new variance-based uncertainty equality along with an inequality for Hermitian operators of a single-qubit system. Th…