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量子元件在崛起
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作者 陈幼松 《知识就是力量》 1993年第5期12-13,共2页
关键词 量子元件 电子元件
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利用量子效应元件实现波长的双稳态功能
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作者 杨妹清 任延同 《光机情报》 1990年第3期35-35,共1页
关键词 量子效应元件 波长 双稳态 半导体
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量子功能元件在兴起
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作者 陈幼松 《现代化》 1992年第9期18-19,共2页
关键词 量子功能元件 电子元件 江崎二级管 电子波动干涉 微细加工技术
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国外有关衍射量子光学元件的研究
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作者 李蓉芳 《光机电信息》 1995年第4期40-40,共1页
关键词 衍射量子光学元件 聚焦衍射元件 聚焦特性 频率特性 成形特性
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电子技术正面临一场革命—谈量子波元件的兴起
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作者 陈幼松 《电子瞭望》 1993年第8期1-4,10,共5页
关键词 电子元件 电子技术 量子元件
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采用超导量子干涉组件在微特斯拉磁场下获取超极化~3He的核磁共振波谱和影像(英文) 被引量:3
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作者 陈名杰 廖书贤 +3 位作者 杨鸿昌 洪妲娥 陈信贤 杨谢乐 《波谱学杂志》 CAS CSCD 北大核心 2010年第3期386-395,共10页
该文以超导量子干涉元件研究光激发氦三极化气体的低磁场磁共振与造影术.使用圆偏极化雷色光将氦三气体极化,超导量子干涉元件磁共振与造影之测量是以磁通耦合方式来进行,超导量子干涉元件是用铋锶钙铜氧高溫超导罐来隔离环境噪音.此方... 该文以超导量子干涉元件研究光激发氦三极化气体的低磁场磁共振与造影术.使用圆偏极化雷色光将氦三气体极化,超导量子干涉元件磁共振与造影之测量是以磁通耦合方式来进行,超导量子干涉元件是用铋锶钙铜氧高溫超导罐来隔离环境噪音.此方法测得的磁共振信号与影像相较于直接将样品置于杜瓦瓶下方有较高的信噪比,当样品无法靠近感测元件时,此装置具高信噪比特色.磁通耦合方式的超导量子干涉元件低磁场磁共振与造影术及其氦三极化气体的肺部造影在学术与应用上是相当有趣. 展开更多
关键词 氦三极化气体 磁共振造影术 超导量子干涉元件
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信息技术浓墨重彩21世纪
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作者 陈幼松 《中国科技月报》 2000年第8期14-16,共3页
关键词 21世纪 信息技术 量子元件 光盘大容量化 微机
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Linear Optical Scheme for Implementing Optimal Real State Cloning
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作者 万洪波 叶柳 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第6期1087-1089,共3页
We propose an experimental scheme for implementing the optimal 1 → 3 real state cloning via linear optical elements. This method relies on one polarized qubit and two location qubits and is feasible with current expe... We propose an experimental scheme for implementing the optimal 1 → 3 real state cloning via linear optical elements. This method relies on one polarized qubit and two location qubits and is feasible with current experimental technology. 展开更多
关键词 linear optical real state CLONING
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Teleportation of a Bipartite Entangled Coherent State via a Four-Partite Cluster-Type Entangled State
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作者 CHEN Hui-Na LIU Jin-Ming 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第10期597-600,共4页
We present an optical scheme to almost completely teleport a bipartite entangled coherent state using afour-partite cluster-type entangled coherent state as quantum channel.The scheme is based on optical elements such... We present an optical scheme to almost completely teleport a bipartite entangled coherent state using afour-partite cluster-type entangled coherent state as quantum channel.The scheme is based on optical elements suchas beam splitters,phase shifters,and photon detectors.We also obtain the average fidelity of the teleportation process.It is shown that the average fidelity is quite close to unity if the mean photon number of the coherent state is not toosmall. 展开更多
关键词 TELEPORTATION entangled coherent state photon detector FIDELITY
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Optomechanical Dark State in a Dual-Species Bose-Einstein Condensate
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作者 景辉 D.S. Goldbaum 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第10期551-556,共6页
We study cavity optomechanics of ultracold dual-species atomic mixtures with nonlinear collisions.Interspecies interactions provide a direct parametric coupling of fictitious mechanical elements which,through interfer... We study cavity optomechanics of ultracold dual-species atomic mixtures with nonlinear collisions.Interspecies interactions provide a direct parametric coupling of fictitious mechanical elements which,through interfering with the intracavity optical field,leads to a switchable optically-dark state for either species.This demonstrates a matterwave analog of recently observed mechanical wave mixing and quantum motional-state swapping,with applications in the construction of integrated phononic devices,and the cavity-enhanced detection of quantum degenerate atomic mixtures. 展开更多
关键词 OPTOMECHANICS Bose-Einstein condensate BISTABILITY
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Efficient N-particle W state concentration with different parity check gates 被引量:5
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作者 SHENG YuBo PAN Jun +2 位作者 GUO Rui ZHOU Lan WANG Lei 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2015年第6期55-65,共11页
We present a universal way to concentrate an arbitrary N-particle less-entangled W state into a maximally entangled W state with different parity check gates.It comprises two protocols.The first protocol is based on t... We present a universal way to concentrate an arbitrary N-particle less-entangled W state into a maximally entangled W state with different parity check gates.It comprises two protocols.The first protocol is based on the linear optical elements,say the partial parity check gate and the second protocol uses the quantum nondemolition measurement to construct the complete parity check gate.Both protocols can achieve the concentration task.These protocols have several advantages.First,they can obtain a maximally entangled W state only with the help of some single photons,which greatly reduces the number of entanglement resources.Second,in the first protocol,only linear optical elements are required,which is feasible with current techniques.Third,the second protocol can be repeated to perform the concentration step and obtain a higher success probability.All these advantages make it quite useful in current quantum communication and computation applications. 展开更多
关键词 quantum communication W state entanglement concentration cross-Kerr nonlinearity
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Advances in flexible lithium metal batteries 被引量:5
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作者 Yongya Zhang Lilan Yi +4 位作者 Jinping Zhang Xin Wang Xincheng Hu Wei Wei Hua Wang 《Science China Materials》 SCIE EI CAS CSCD 2022年第8期2035-2059,共25页
Flexible energy storage devices are becoming indispensable new elements of wearable electronics to improve our living qualities.As the main energy storage devices,lithium-ion batteries(LIBs)are gradually approaching t... Flexible energy storage devices are becoming indispensable new elements of wearable electronics to improve our living qualities.As the main energy storage devices,lithium-ion batteries(LIBs)are gradually approaching their theoretical limit in terms of energy density.In recent years,lithium metal batteries(LMBs)with metallic Li as the anode are revived due to the extremely high energy density,and are considered to be one of the ideal alternatives for the next generation of flexible power supply.In this review,key technologies and scientific problems to be overcome for flexible LMBs are discussed.Then,the recent advances in flexible LMBs,including the design of flexible Li metal anodes,electrolytes,cathodes and interlayers,are summarized.In addition,we have summed up the research progress of flexible device configurations,and emphasized the importance of flexibility evaluation and functionality integration to ensure the wearing safety in complex environment.Finally,the challenges and future development of flexible LMBs are summarized and prospected. 展开更多
关键词 flexible lithium metal batteries high energy density flexibility evaluation lithium dendrites device configuration
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Is quantum capacitance in graphene a potential hurdle for device scaling?
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作者 Jaeho Lee Hyun-Jong Chung +6 位作者 David H. Seo Jaehong Lee Hyungcheol Shin Sunae Seo Seongjun Park Sungwoo Hwang Kinam Kim 《Nano Research》 SCIE EI CAS CSCD 2014年第4期453-461,共9页
Transistor size is constantly being reduced to improve performance as well as power consumption. For the channel length to be reduced, the corresponding gate dielectric thickness should also be reduced. Unfortunately,... Transistor size is constantly being reduced to improve performance as well as power consumption. For the channel length to be reduced, the corresponding gate dielectric thickness should also be reduced. Unfortunately, graphene devices are more complicated due to an extra capacitance called quantum capacitance (CQ) which limits the effective gate dielectric reduction. In this work, we analyzed the effect of CQ on device-scaling issues by extracting it from scaling of the channel length of devices. In contrast to previous reports for metal-insulator- metal structures, a practical device structure was used in conjunction with direct radio-frequency field-effect transistor measurements to describe the graphene channels. In order to precisely extract device parameters, we reassessed the equivalent circuit, and concluded that the on-state model should in fact be used. By careful consideration of the underlap region, our device modeling was shown to be in good agreement with the experimental data. CQ contributions to equivalent oxide thickness were analyzed in detail for varying impurity concentrations in graphene. Finally, we were able to demonstrate that despite contributions from CQ, graphene's high mobility and low-voltage operation allows for ~raphene channels suitable for next generation transistors. 展开更多
关键词 GRAPHENE equivalent circuit quantum capacitance intrinsic delay
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