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量子收率测定仪
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作者 赵成文 戚奎华 +3 位作者 黄润兰 史晓波 田长荣 顾长立 《分析仪器》 CAS 1991年第4期34-37,共4页
本文报导用于光化学反应研究的量子收率测定仪.该仪器主要由200瓦氙灯光源和带恒温夹套的石英反应器等十几个部件构成.核心部件光反应器的两个窗口和反应器壁烧结成为一个整体,可耐强酸、强碱和各种溶剂.采用草酸铁钾化学光度计测量单... 本文报导用于光化学反应研究的量子收率测定仪.该仪器主要由200瓦氙灯光源和带恒温夹套的石英反应器等十几个部件构成.核心部件光反应器的两个窗口和反应器壁烧结成为一个整体,可耐强酸、强碱和各种溶剂.采用草酸铁钾化学光度计测量单色光强度,可达2~8×10^(-8)爱因斯坦/秒,相对误差为±3%;测量催化光还原水产氢体系的量子收率,相对误差为±10%,在可比条件下与文献结果一致. 展开更多
关键词 量子收率 测定仪 光化学反应
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Distributive Quantum Logic: Controlled-Error Approach
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作者 Michael Katz 《Journal of Philosophy Study》 2013年第4期300-311,共12页
The idea that approximate exactness is the most we can and should expect scientific theories to yield underlies the formation and application of the multi-valued logic of approximation discussed in this paper. In this... The idea that approximate exactness is the most we can and should expect scientific theories to yield underlies the formation and application of the multi-valued logic of approximation discussed in this paper. In this logic, inexactness (measured by truth values) is controlled and minimized by means of uniquely designed deductions. We show how the notion of equality (including substitution of equals) is handled within this logic and we apply it to certain principles and interpretations of quantum theory. 展开更多
关键词 quantum logic multi-valued logic inexactness APPROXIMATION EQUALITY
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Post-Gaussian Effective Potential of Double sine-Gordon Field
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作者 CAIWei-Ran LOUSen-Yue 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第6期1075-1082,共8页
In the framework of the functional integral formalism, we calculate the effective potential of the double sine-Gordon (DsG) model up to the second order with an optimized expansion and the Coleman's normal-orderin... In the framework of the functional integral formalism, we calculate the effective potential of the double sine-Gordon (DsG) model up to the second order with an optimized expansion and the Coleman's normal-ordering prescription. Within the range of convergence, we make a comparison among the classicaland the effective potential of the first and second order. The numerical analysis shows that the DsG post-Gaussian EP possesses some fine global properties and makes a substantial and a concordant quantum correction to the features of the classical potential. 展开更多
关键词 post-gaussian effective potential double sine-gordon field optimizedexpansion
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Controlled Remote State Preparation 被引量:1
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作者 WANG Zhang-Yin LIU Yi-Min +1 位作者 ZUO Xue-Qin ZHANG Zhan-Jun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第8期235-240,共6页
We present a scheme for remotely preparing a state via the controls of many agents in a network.In thescheme,the agents' controls are achieved by utilizing quantum key distribution.Generally,the original state can... We present a scheme for remotely preparing a state via the controls of many agents in a network.In thescheme,the agents' controls are achieved by utilizing quantum key distribution.Generally,the original state can berestored by the receiver with probability 1/2 if all the agents collaborate.However,for certain type of original states therestoration probability is unit. 展开更多
关键词 controlled remote state preparation quantum key distribution single-qubit von Neumann orthogonal measurement controlled-NOT gate
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A New Scheme for Probabilistic Teleportation and Its Potential Applications 被引量:2
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作者 魏家华 戴宏毅 张明 《Communications in Theoretical Physics》 SCIE CAS CSCD 2013年第12期651-657,共7页
We propose a novel scheme to probabilistically teleport an unknown two-level quantum state when the information of the partially entangled state is only available for the sender. This is in contrast with the fact that... We propose a novel scheme to probabilistically teleport an unknown two-level quantum state when the information of the partially entangled state is only available for the sender. This is in contrast with the fact that the receiver must know the non-maximally entangled state in previous typical schemes for the teleportation. Additionally, we illustrate two potential applications of the novel scheme for probabilistic teleportation from a sender to a receiver with the help of an assistant, who plays distinct roles under different communication conditions, and our results show that the novel proposal could enlarge the applied range of probabilistic teleportation. 展开更多
关键词 probabilistic teleportation partially entangled state different communication conditions
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Absorption Spectra and Refractive Index Changes of an Exciton in a Core/Shell Quantum Dot 被引量:1
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作者 解文方 《Communications in Theoretical Physics》 SCIE CAS CSCD 2015年第5期635-640,共6页
The absorption spectra and the refractive index changes are calculated theoretically for an exeiton in a core/shell quantum dot. The advantage of our methodology is that one can investigate the influence of the repuls... The absorption spectra and the refractive index changes are calculated theoretically for an exeiton in a core/shell quantum dot. The advantage of our methodology is that one can investigate the influence of the repulsive core by varying two parameters in the confinement potential. The dimensionality effect of exciton quantum dots on the optical absorptions has been studied. It has been found that in the same regime, the optical absorption intensities of excitons axe much smaller for the core/shell quantum dots than for the two-dimensional quantum rings. The linear and the nonlinear optical absorption coefficients and refractive index changes have been examined with the change of the confinement potential. The results show that the optical absorptions and the refractive index changes are strongly affected by the repulsive core of core/shell quantum dots. Moreover, the calculated results also reveal that as the inner radius increases, the peak values of the absorption coefficients and the refractive index changes of an exciton will show the optical Aharonov-Bohm oscillation in core/shell quantum dots. 展开更多
关键词 quantum dot nonlinear optics
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A review of self-assembled monolayers as potential terahertz frequency tunnel diodes
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作者 Michael Celestin Subramanian Krishnan +2 位作者 Shekhar Bhansali Elias Stefanakos D. Yogi Goswami 《Nano Research》 SCIE EI CAS CSCD 2014年第5期589-625,共37页
In this review, we describe the principles of the tunnel junction, self-assembled monolayer (SAM) application techniques, experimental testbed fabrication, and characterization of the films and devices. In addition,... In this review, we describe the principles of the tunnel junction, self-assembled monolayer (SAM) application techniques, experimental testbed fabrication, and characterization of the films and devices. In addition, techniques for directed application, removal, and functionalization of the monolayers are discussed. Bottom-up fabrication techniques have seen increased attention because of their versatility and ease of use. These films see mechanical uses as surface modifiers and micro-scale lubricants. Advances in nanowatt electronics and ultra-low power sensors have opened up an energy harvesting niche for solutions which would have proven ineffective just some years ago. The focus of this study is the two- terminal junction which has potential applications in THz rectification for energy harvesting, medical imaging, and defense sensing. The quantum theory of operation behind these devices is touched on briefly---describing tunneling through the organic monolayers. Commentary on trends in research and potential future work are presented as well. 展开更多
关键词 SAM/self-assembly quantum tunneling molecular rectification IR detection RECTENNA
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