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	1. 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


	2. Reduced Fine Structure Constant, and A Calculation of Gravitational Radiation of Hydrogen Atom
	Yuan Xinxi
	Physics 23 June 2019
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	Abstract:In this paper some speculated ideas are invented by analogy between gravity and electromagnetism. Analog to the relation between the fine structure constant and the Planck constant, planck constant of gravitational interaction is defined by the rest mass of the electron and the reduced fine structure constant. Then a recommended value of planck constant of gravitational interaction is given. If the definition is true, the reduced fine structure constant may be a common constant shared by gravitational and electromagnetic interactions. Based on the planck constant of gravitational interaction, main spectrum lines of Lyman series, Balmer series, and Paschen series of gravitational radiation of atomic Hydrogen are discussed, respectively. All the above ideas originate from a simple viewpoint that gravitational masses (the gravitational charges) should be invariant under Lorentz transformations.
	TO cite this article:Yuan Xinxi. Reduced Fine Structure Constant, and A Calculation of Gravitational Radiation of Hydrogen Atom[OL].[23 June 2019] http://en.paper.edu.cn/en_releasepaper/content/4749299

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	3. Nonlinear Ramsey interference of a Bose-Einstein condensate in an optical cavity
	LI Sheng-Chang,DOU Fu-Quan
	Physics 02 November 2016
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	Abstract:We propose a feasible scheme to realize nonlinear Ramsey interferometer that uses a Bose-Einstein condensate in an optical cavity, where the nonlinearity arises both from the mean-field treatment of the coherent atomic interaction and the atom--cavity-filed coupling. We present numerical simulations to study the effects both of the cavity-pump detuning and the initial state on the Ramsey interference fringes in the time domain. We find that both the modification to the fringe's period induced by the atom--cavity-field coupling and the visibility of the Ramsey fringes strongly depend on the choice of the initial state.
	TO cite this article:LI Sheng-Chang,DOU Fu-Quan. Nonlinear Ramsey interference of a Bose-Einstein condensate in an optical cavity[OL].[ 2 November 2016] http://en.paper.edu.cn/en_releasepaper/content/4709042


	4. First Order Form of Schrödinger Equation
	LI Anyong
	Physics 21 May 2015
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	Abstract:Based on the algebra of matrices we propose a general first order equation in three- dimension which can deduce the Schrödinger equation. The corresponding time-independent equation is also proposed for a general potential. Several constant potential problems including potential step problem and potential well problem are treated using this first-order equation, we obtain the non- relativistic quantum mechanical results of the Schrödinger equation. Moreover, for the finite potential well problem, the first-order relativistic correction of the energy is also obtained.
	TO cite this article:LI Anyong. First Order Form of Schrödinger Equation[OL].[21 May 2015] http://en.paper.edu.cn/en_releasepaper/content/4644614


	5. Hybrid magic state distillation for universal fault-tolerant quantum computation
	ZHENG Wenqiang, YU Yafei, PAN Jian,ZHANG Jingfu,LI Jun,LI Zhaokai,Dieter Suter,ZHOU Xianyi,PENG Xinhua,DU Jiangfeng
	Physics 17 September 2014
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	Abstract:A set of stabilizer operations augmented by some special initialstates known as ``magic states", gives the possibility of universalfault-tolerant quantum computation. However, magic state preparationinevitably involves fault-untolerant operations that introducenoise. The most common method to eliminate the noise ismagic state distillation (MSD) by stabilizer operations. Here wepropose a hybrid MSD protocol by connecting a four-qubit $H$-typeMSD with a five-qubit $T$-type MSD to overcome the disadvantages ofthe previous MSD protocols. The hybrid MSD protocol furtherintegrates distillable ranges of different exisiting MSD protocols,and provides considerable improvement in qubit resource consumptionfor almost all of the distillable region. Moreover, weexperimentally demonstrate the four-qubit $H$-type MSD protocolusing nuclear magnetic resonance technology.
	TO cite this article:ZHENG Wenqiang, YU Yafei, PAN Jian, et al. Hybrid magic state distillation for universal fault-tolerant quantum computation[OL].[17 September 2014] http://en.paper.edu.cn/en_releasepaper/content/4610404


	6. Quantum simulation of interaction blockade in atomic Bose-Josephson system with solid quadrupolar crystal
	NIE Xinfang, LI Jun, CUI Jiangyu, LUO Zhihuang, HUANG Jiahao, CHEN　Hongwei, LEE Chaohong, PENG Xinhua, DU Jiangfeng
	Physics 05 September 2014
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	Abstract:Bose-Josephson system (BJS) provides an excellent platform for exploring and exploiting exotic quantum coherence,where interaction blockade is an important fundamental phenomenon in BJS.Using the analogy of the atomic BJS and the quadrupolar nuclear magnetic resonance (NMR) crystal, we experimentally simulate the atomic BJS in a NMR quantum simulator composing of the quadrupolar spin-$3/2$ sodium nuclei of a NaNO$_3$ single crystal, and observe the interesting phenomenon of interaction blockade by adiabatically changing the asymmetry parameter in an atomic BJS.This is the first experimental implementation of adiabatic quantum simulation using quadrupolar nuclear system as far as we know.Our work exhibits important applications of quadrupolar NMR in the quantum information science.
	TO cite this article:NIE Xinfang, LI Jun, CUI Jiangyu, et al. Quantum simulation of interaction blockade in atomic Bose-Josephson system with solid quadrupolar crystal[OL].[ 5 September 2014] http://en.paper.edu.cn/en_releasepaper/content/4607891


	7. Hybrid entanglement concentration using quantum-dot and microcavity coupled system
	Wang Chuan,CAO Cong,HE Lingyan,ZHANG Ru
	Physics 22 January 2013
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	Abstract:We propose a hybrid entanglement concentration protocol based onquantum dots (QDs) and optical microcavity coupled systems. Thesystem is used for photon and electron hybrid entanglementgeneration. Also the proposed system can be used for parity checkwhich allows a quantum nondemolition measurement on the spin parity.By performing parity check process on electrons, the entangled statecan be concentrated into maximally entangled state efficiently.
	TO cite this article:Wang Chuan,CAO Cong,HE Lingyan, et al. Hybrid entanglement concentration using quantum-dot and microcavity coupled system[OL].[22 January 2013] http://en.paper.edu.cn/en_releasepaper/content/4517194


	8. Transmitting Matter by Using Space-Varying Probability
	HUANG Yongyi
	Physics 10 January 2012
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	Abstract:Macro matter has a definite path, howerver, micro matter does not have a clear moting path because it has a fundamental property i.e. the duality of wave and particle. Based on the difference between macro matter and micro matter, we propose the concept of transmitting matter by using space-varying probability. After we solve Schrodinger equation of the unequal doublee-δ potential, we demonstrate the main process of transmission via space-varying probability. We point out three main results for probability transmission: (1) the transmission distance does not have any limit, (2) the transmission system will emit a phonon at the end of transmission process. (3) the transimission velocity is de Broglie matter wave phase velocity which may be larger many times than light speed in vacuum
	TO cite this article:HUANG Yongyi. Transmitting Matter by Using Space-Varying Probability[OL].[10 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4461264


	9. Parameter Scaling in the Decoherent Quantum-Classical Transition for
	Mao Ting ,Yu Yang
	Physics 30 December 2009
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	Abstract:We numerically investigated the quantum-classical transition in rf-SQUID systems coupled to a dissipative environment. It is found that chaos emerges and the degree of chaos, the maximal Lyapunov exponent Lambda_m, exhibits non-monotonic behavior as a function of the coupling strength D. By measuring the proximity of quantum and classical evolution with the uncertainty of dynamics, we show that the uncertainty is a monotonic function of Lambda_m/D. In addition, the scaling holds in SQUID systems to a relatively smaller hbar_eff, suggesting the universality for this scaling.
	TO cite this article:Mao Ting ,Yu Yang . Parameter Scaling in the Decoherent Quantum-Classical Transition for[OL].[30 December 2009] http://en.paper.edu.cn/en_releasepaper/content/38281


	10. Quantum Key Distribution Control System and Phase Modulator Drive Module Design
	LI linxia
	Physics 23 November 2009
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	Abstract:Recent progress in quantum key distribution (QKD) is briefly reviewed and a control circuit for driving phase modulator is presented using high-speed and high frequency analog switch. Phase modulator is an indispensable optical modulator in quantum key distribution as it can affect the quantum bit error rate. Simulation results show that the output voltage pulse width can be less than 10ns,which can be well applied to quantum key distribution system. The feasibility and reliability of the scheme are verified through theoretical analysis and experiment results.
	TO cite this article:LI linxia. Quantum Key Distribution Control System and Phase Modulator Drive Module Design[OL].[23 November 2009] http://en.paper.edu.cn/en_releasepaper/content/36937

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