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	1. Vorticity and the first class of eigenvalue system associated with SU(2) group
	Zheng Ran
	Physics 16 November 2022
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	Abstract:The concept of vorticity is central to many aspects of fluid dynamics. It is shown that the problem of defining a vortex in a real fluid could be discussed based on the associated quaternions. In this context and in the treatment of vortices in general, the concept of the associated SU(2) group plays such an essential role, meanwhile, in this letter, we construct the first class of eigenvalue system based on the SU(2) group associated with the vorticity in fluid dynamics.
	TO cite this article:Zheng Ran. Vorticity and the first class of eigenvalue system associated with SU(2) group[OL].[16 November 2022] http://en.paper.edu.cn/en_releasepaper/content/4758348


	2. Vorticity and the Associated Quaternions
	Zheng Ran
	Physics 28 October 2022
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	Abstract:In this letter we provide a quaternion expression of the most primary derived field in fluid motion, describing the local spatial variation of a velocity field, to measure the isotropic expansion and the rotation of fluid particles from a new point of view.
	TO cite this article:Zheng Ran. Vorticity and the Associated Quaternions[OL].[28 October 2022] http://en.paper.edu.cn/en_releasepaper/content/4758285


	3. The Analysis of Efficiency for High-dimensional Quantum Secure Direct Communication Under Atmospheric Turbulence
	NIU Jialei,WANG Tiejun,LIU Xinchang
	Physics 02 April 2022
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	Abstract:Recently, there is a tremendous attention on the high-dimensional quantum information processing using the orbital angular momentum(OAM) of photons. It provides an efficient method to increase the capacity of quantum channel. However, OAM is very vulnerable to atmospheric turbulence, resulting in phase distortion and therefore, leading to information leakage during quantum communications. On the other hand, quantum secure direct communications (QSDC) defines an efficient way of information exchange through quantum channels directly. Here in this work, by combining the applications of OAM states of photons as the information carrier with the QSDC, this paper analyzed the performance of the high-dimensional quantum secure direct communication protocol based on encoding the information on the single photon OAM state under the condition of free space channel. Numerically, this paper discussed the performance of OAM states QSDC under atmospheric turbulence, and mainly calculates the influence of cross-talk caused by phase fluctuation on the system. This paper has drawn the conclusion that in weak turbulence, when the beam waist w\' and the Fried parameter r become comparable, the information capacity will decrease sharply.
	TO cite this article:NIU Jialei,WANG Tiejun,LIU Xinchang. The Analysis of Efficiency for High-dimensional Quantum Secure Direct Communication Under Atmospheric Turbulence[OL].[ 2 April 2022] http://en.paper.edu.cn/en_releasepaper/content/4757317


	4. Quantum entanglement between two antiferromagnets in the microcavities
	YANG Xiaoxiao,WANG Tiejun,WANG Chuan
	Physics 02 April 2022
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	Abstract:Magnons are being currently developed as qubits for quantum storage and information processing. Here, in this work, we focus on a hybrid quantum system containing two antiferromagnets, and entanglement between magnons in the antiferromagnets can be generated through strong coupling mediated by the same microwave mode. Moreover, we numerically simulate the process with feasible parameters. The influence of the system parameters, such as the magnon-photon coupling rate, detuning, bias magnetic field and dissipation of entanglement, are discussed. By adjusting some of the experimental parameters, we show that two antiferromagnets can produce a large entanglement, which is a result that has not been previously found in other quantum systems. Our findings may provide a potential platform for the completion of related quantum tasks in the future.
	TO cite this article:YANG Xiaoxiao,WANG Tiejun,WANG Chuan. Quantum entanglement between two antiferromagnets in the microcavities[OL].[ 2 April 2022] http://en.paper.edu.cn/en_releasepaper/content/4757286


	5. Comment on Quantum private query with perfect user privacy against a joint-measurement attack
	Wu Yali,Sun Hongxiang
	Physics 22 March 2021
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	Abstract:The quantum-key-distribution (QKD)-based quantum private query (QPQ) has become a research hotspot

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