Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)最新文献
{"title":"Instantaneous nonlocal measurements","authors":"L. Vaidman","doi":"10.1117/12.517851","DOIUrl":"https://doi.org/10.1117/12.517851","url":null,"abstract":"It is shown, under the assumption of possibility to perform an arbitrary local operation, that all nonlocal variables related to two or more separate sites can be measured instantaneously. The measurement is based on teleportation method. It is a verification measurement: it yields reliably the eigenvalues of the nonlocal variables, but it does not prepare the eigenstates of the system.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73436138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Model of quantum interferometer in vacuum nanotriode and quantum bit realization","authors":"V. A. Zukov","doi":"10.1117/12.517914","DOIUrl":"https://doi.org/10.1117/12.517914","url":null,"abstract":"Thanks to resent achievements in the Electron Beam Lithography (EBL) and Focused Ion Beam (FIB) lithography was built new type of electron devices: vacuum field emission nanodiode and nanodiode and nanotriode. Nanodiode and nanotriode have cathode about 2 nm in diameter, anode current 10 nA and gate potential 10 V. These devices display new quatnum properties. In the paper of Driscill-Smith et al was experimentally displayed series of the interference oscillation in the transconductance of nanotriode by linear chaging of the gate potential. The model of quantum potential box used by the authors of the work has does not explain the effect. In the present paper is made an attempt to explain the properties of nanotriode by means of the quansi-classical eikonal method and the diffraction theory. Simultaneously it is suggested to change the parameters of the nanotriode to display clearer quantum properties.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72935824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Probabilistic foundations of quantum mechanics and quantum information","authors":"A. Khrennikov","doi":"10.1117/12.517850","DOIUrl":"https://doi.org/10.1117/12.517850","url":null,"abstract":"We discuss foundation of quantum mechanics (interpretations, superposition, principle of complementarity, locality, hidden variables) and quantum information theory.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90697102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Measurement of a single electron spin in a solid state quantum computer","authors":"V. V’yurkov, A. Vetrov, A. Orlikovsky","doi":"10.1117/12.517910","DOIUrl":"https://doi.org/10.1117/12.517910","url":null,"abstract":"A spin state of an electron in a quantum dot (quantum bit) could be tested by a spin-polarized current passing through the narrow constriction in a quantum wire placed near the dot. A fairly strong tunnel coupling between the quantum dot and the constriction is required to enhance an exchange interaction. Charge related phenomena such as a charge blockade and single electron flow through the narrow constriction are examined. The conditions when a spin blockade dominates are revealed.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78464585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Bagraev, A. Bouravleuv, Wolfgang Gehlholff, L. Klyachkin, A. Malyarenko, I. Shelykh
{"title":"Phase response of spin-dependent single-hole tunneling in silicon one-dimensional rings","authors":"N. Bagraev, A. Bouravleuv, Wolfgang Gehlholff, L. Klyachkin, A. Malyarenko, I. Shelykh","doi":"10.1117/12.517880","DOIUrl":"https://doi.org/10.1117/12.517880","url":null,"abstract":"We present the first findings of the transmission phase shift π/2 in the 0.7(2e2/h) structure of the quantum staircase and in the Kondo-correlated states revealed by an open system which represents a short quantum wire that is inserted within one of the arms of the Aharonov-Bohm (AB) ring inside the p-type self-assembled silicon quantum well prepared on the n-type Si (100) wafer. The quantum well of the p-type is naturally formed between δ-barriers by short-time diffusion of boron. The phase shift in the 0.7(2e2/h) structure caused by heavy holes is found to be changed from π to π by electrically-detected NMR of the 29Si nuclei thereby verifying the spin polarization in a quantum wire. The optical nuclear polarization of the 29Si nuclei induced by circularly polarized light in the n-type Si(100) wafer is shown to effect also on the coherent transport of holes through the quantum wire inserted within one of the AB ring's arms. The quantum conductance revealed by the quantum wire that is embedded in the AB ring inside self-assembled silicon quantum well in the weak localization regime is studied to demonstrate the coherence of the single-hole transport and negative magnetic resistance effect. The positive/negative transformation of the magnetoresistance in the weakest magnetic fields is found to be caused by the electrically-detected NMR of the 29Si nuclei thereby verifiying the effect of the nuclear spin polarization on a weak antilocalization.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74378388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. N. Gorbachev, A. Y. Kazakov, A. Trubilko, A. A. Rodickina
{"title":"Dense coding and safety of quantum communications","authors":"V. N. Gorbachev, A. Y. Kazakov, A. Trubilko, A. A. Rodickina","doi":"10.1117/12.517874","DOIUrl":"https://doi.org/10.1117/12.517874","url":null,"abstract":"Safety of quantum communications is, in the first place, the result of the quantum nature of the signal, sending by the sender Alice to the receiver Bob. But when we discuss the safety of the quantum communications as a whole we have to take into account all objects taking place in the process of creation and communciation of information. One of such object is the sending station, which is a classical one. As such it can be eavesdropped by classical means and this fact can reduce sharply the safety of quantum channel. In this noe we demonstrate, that dense coding and quantum properits of the channel give the possibility to raise the safety of classical sending station against the eavesdropping.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87783660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hole Zeeman effect in Ge/Si quantum dots","authors":"A. Nenashev, A. Dvurechenskii, A. Zinovieva","doi":"10.1117/12.517895","DOIUrl":"https://doi.org/10.1117/12.517895","url":null,"abstract":"We investigate theoretically the Zeeman effect on the lowest confined hole in quantum dots. In frame of tight-binding approach we propose a method of calculating the Lande factor for localized states. The principal values of the g-factor for the ground hole state in the self-assembled Ge/Si quantum dot are calculated. We find the strong g-factor anisotropy - the components gxx, gyy are one order smaller than the gzz-component, gzz=15.71, gxx=1.14, gyy=1.76. The efficiency of the developed method is demonstrated by calculating the size-dependence of g-factor and by establishment of the connectin with 2D case. The g-factor anisotropy increases with the island and the ground hole state g-factor goes to heavy hole g-factor. The analysis of the wave function structure shows that g-factor and its size-dependence are mainly controlled by the contribution of the state with Jz=±3/2.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"188 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84412607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ludmila I. Aparshina, A. Chernykh, L. Fomin, I. V. Malikov, Valery Y. Vinnichenko, G. Mikhailov
{"title":"Epitaxial metallic electrodes, quantum dots, and wires for application in solid state qubit technology","authors":"Ludmila I. Aparshina, A. Chernykh, L. Fomin, I. V. Malikov, Valery Y. Vinnichenko, G. Mikhailov","doi":"10.1117/12.517878","DOIUrl":"https://doi.org/10.1117/12.517878","url":null,"abstract":"A road map for the fabrication of epitaxial metallic electrodes, quantum dots and wires is considered for potential application in solid-state qubit technology. The nanotechnology developed includes high quality low-roughness film epitaxy, probe lithography and subtractive techniques for the fabrication of epitaxial nanostructures with a lateral resolution down to 10 nm.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81028963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Realistic models of a quantum computer","authors":"Y. Ozhigov","doi":"10.1117/12.517919","DOIUrl":"https://doi.org/10.1117/12.517919","url":null,"abstract":"We study a realistic quantum computational model with the permanent interaction of diagonal type between qubits. Its universality was proven in quant-ph/0202030. We propose two types of control over computations: random and periodical NOTs. The slowdown of computations in comparison with the abstract model is estimated. It is shown how fermionic computations can be implemented in the framework of this model.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74902763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Quantum neural technology and controllable quantum gates","authors":"A. Ezhov","doi":"10.1117/12.517894","DOIUrl":"https://doi.org/10.1117/12.517894","url":null,"abstract":"Quantum neural technology is a hypothetical but promising new field of informatics, which combines together the main ideas of both quantum and neural computing. There is a hope that this combination can resolve many problems of already existing classical neural technology, and also can give new opportunities to future quantum computing. Comparing with classical neural technology its quantum analog can enhance dramatically the capacity of neural modesl of associative memory, to facilitate the creation of neural hardware by eliminating the wiring problem, etc. On the other hand, as it will be argued in presented paper, quantum neural system can be used for realization of controllable quantum gates, which can be used in quantum computers, and in particular, in so-called type-II quantum computers.","PeriodicalId":90714,"journal":{"name":"Quantum bio-informatics V : proceedings of the quantum bio-informatics 2011, Tokyo University of Science, Japan, 7-12 March 2011. Quantum Bio-Informatics (Conference) (5th : 2011 : Tokyo, Japan)","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2003-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74830781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}