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pro vyhledávání: '"Zhang, Qing‐Hua"'
We present the uncertainty relations in terms of the symmetrized \r{ho}-absolute variance, which generalizes the uncertainty relations for arbitrary operator (not necessarily Hermitian) to quantum channels. By recalling the quantity |U\r{ho}|({\Phi})
Externí odkaz:
http://arxiv.org/abs/2406.09157
Autor:
Zhang, Qing-Hua, Fei, Shao-Ming
Publikováno v:
J. Phys. A: Math. Theor. 57 (2024) 235301 (11pp)
Quantum coherence constitutes a foundational characteristic of quantum mechanics and is integral to emerging quantum resource theories. However, quantum coherence is severely restricted by environmental noise in general quantum processing, indicated
Externí odkaz:
http://arxiv.org/abs/2405.14337
Publikováno v:
Quantum Inf. Process. 23, 283 (2024)
Uncertainty principle reveals the intrinsic differences between the classical and quantum worlds, which plays a significant role in quantum information theory. By using $\rho$-absolute variance, we introduce the uncertainty of quantum channels and ex
Externí odkaz:
http://arxiv.org/abs/2404.08304
Publikováno v:
Quantum Inf Process 22, 456 (2023)
The variance of quantum channels involving a mixed state gives a hybrid of classical and quantum uncertainties. We seek certain decomposition of variance into classical and quantum parts in terms of the Wigner-Yanase skew information. Generalizing th
Externí odkaz:
http://arxiv.org/abs/2312.12800
Publikováno v:
Quantum Inf. Process. (2024)
Uncertainty principle is one of the most essential features in quantum mechanics and plays profound roles in quantum information processing. We establish tighter summation form uncertainty relations based on metric-adjusted skew information via opera
Externí odkaz:
http://arxiv.org/abs/2312.07963
Publikováno v:
Results in Physics 56 (2024) 107253
We study the steerability for arbitrary dimensional bipartite systems based on the correlation matrices given by local special unitary groups. We present families of steering criteria for bipartite quantum states in terms of parameterized correlation
Externí odkaz:
http://arxiv.org/abs/2312.05729
Autor:
Zhang, Qing-Hua, Fei, Shao-Ming
Publikováno v:
Phys. Rev. A 108, 012211 (2023)
Entropic uncertainty relations demonstrate the intrinsic uncertainty of nature from an information-theory perspective. Recently, a quantum-memory-assisted entropic uncertainty relation for multiple measurements was proposed by Wu $et\ al.$ [Phys Rev
Externí odkaz:
http://arxiv.org/abs/2307.13202
Inspired by the fact that the matrix formulated by nonlocal similar patches in a natural image is of low rank, the rank approximation issue have been extensively investigated over the past decades, among which weighted nuclear norm minimization (WNNM
Externí odkaz:
http://arxiv.org/abs/2307.12656
Autor:
Zhang, Qing-Hua, Fei, Shao-ming
Publikováno v:
Eur. Phys. J. Plus 139, 137 (2024)
The Wigner-Yanase skew information stands for the uncertainty about the information on the values of observables not commuting with the conserved quantity. The Wigner-Yanase skew information-based uncertainty relations can be regarded as a complement
Externí odkaz:
http://arxiv.org/abs/2306.06602
Publikováno v:
Eur. Phys. J. Plus 138, 287 (2023)
The uncertainty principle is one of the fundamental features of quantum mechanics and plays an essential role in quantum information theory. We study uncertainty relations based on variance for arbitrary finite $N$ quantum observables. We establish a
Externí odkaz:
http://arxiv.org/abs/2211.03301