Xue Yang, Mir Alimuddin, Yan-Han Yang, Ming-Xing Luo
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引用次数: 0
Abstract
The existence of quantum entanglement implies a non-vanishing thermodynamic quantity termed an ergotropic gap (EG). Our goal in this work is to characterize entanglement from the perspective of the ergotropic gap. We firstly define the passive-state energy of the marginals as an entanglement monotone named EG entanglement, additionally, we derive an analytical formula for two-qubit entangled systems. Another interesting result is the monogamy relation for the EG entanglement, which indicates that the shareability of bipartite entanglement in multipartite entangled systems is bounded by the amount of entanglement. Finally, we show that a necessary condition for an n-qubit pure state is that all marginal EG entanglements should satisfy polygon inequalities. These results reveal a new understanding of entanglement from the view of thermodynamics.
期刊介绍：
Quantum Information Processing is a high-impact, international journal publishing cutting-edge experimental and theoretical research in all areas of Quantum Information Science. Topics of interest include quantum cryptography and communications, entanglement and discord, quantum algorithms, quantum error correction and fault tolerance, quantum computer science, quantum imaging and sensing, and experimental platforms for quantum information. Quantum Information Processing supports and inspires research by providing a comprehensive peer review process, and broadcasting high quality results in a range of formats. These include original papers, letters, broadly focused perspectives, comprehensive review articles, book reviews, and special topical issues. The journal is particularly interested in papers detailing and demonstrating quantum information protocols for cryptography, communications, computation, and sensing.
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