The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Yi-ping Luo - One of the best experts on this subject based on the ideXlab platform.
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Enhancement on “quantum blind signature based on two-State Vector formalism”
Quantum Information Processing, 2013Co-Authors: Chun-wei Yang, Tzonelih Hwang, Yi-ping LuoAbstract:Recently, Su et al. (Opt Comm 283:4408–4410, 2010) proposed a quantum blind signature based on the two-State Vector formalism. Their protocol is rather practical because the signer and the blind signature requester only have to perform measurement operations to complete the quantum blind signature. This study points out that a dishonest signer in their scheme can reveal the blind signature requester’s secret key and message without being detected by using Trojan horse attacks or the fake photon attack. A modified scheme is then proposed to avoid these attacks.
Chun-wei Yang - One of the best experts on this subject based on the ideXlab platform.
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Enhancement on “quantum blind signature based on two-State Vector formalism”
Quantum Information Processing, 2013Co-Authors: Chun-wei Yang, Tzonelih Hwang, Yi-ping LuoAbstract:Recently, Su et al. (Opt Comm 283:4408–4410, 2010) proposed a quantum blind signature based on the two-State Vector formalism. Their protocol is rather practical because the signer and the blind signature requester only have to perform measurement operations to complete the quantum blind signature. This study points out that a dishonest signer in their scheme can reveal the blind signature requester’s secret key and message without being detected by using Trojan horse attacks or the fake photon attack. A modified scheme is then proposed to avoid these attacks.
Tzonelih Hwang - One of the best experts on this subject based on the ideXlab platform.
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Enhancement on “quantum blind signature based on two-State Vector formalism”
Quantum Information Processing, 2013Co-Authors: Chun-wei Yang, Tzonelih Hwang, Yi-ping LuoAbstract:Recently, Su et al. (Opt Comm 283:4408–4410, 2010) proposed a quantum blind signature based on the two-State Vector formalism. Their protocol is rather practical because the signer and the blind signature requester only have to perform measurement operations to complete the quantum blind signature. This study points out that a dishonest signer in their scheme can reveal the blind signature requester’s secret key and message without being detected by using Trojan horse attacks or the fake photon attack. A modified scheme is then proposed to avoid these attacks.
Mete Ozay - One of the best experts on this subject based on the ideXlab platform.
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Distributed models for sparse attack construction and State Vector estimation in the smart grid
2012 IEEE Third International Conference on Smart Grid Communications (SmartGridComm), 2012Co-Authors: Mete Ozay, Iñaki Esnaola, Fatos Yarman T. Vural, Sanjeev R. Kulkarni, Vincent H. PoorAbstract:Two distributed attack models and two distributed State Vector estimation methods are introduced to handle the sparsity of smart grid networks in order to employ unobservable false data injection attacks and estimate State Vectors. First, Distributed Sparse Attacks in which attackers process local measurements in order to achieve consensus for an attack Vector are introduced. In the second attack model, called Collective Sparse Attacks, it is assumed that the topological information of the network and the measurements is available to attackers. However, attackers employ attacks to the groups of State Vectors. The first distributed State Vector estimation method, called Distributed State Vector Estimation, assumes that observed measurements are distributed in groups or clusters in the network. The second method, called Collaborative Sparse State Vector Estimation, consists of different operators estimating subsets of State variables. Therefore, State variables are assumed to be distributed in groups and accessed by the network operators locally. The network operators compute their local estimates and send the estimated values to a centralized network operator in order to update the estimated values.
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SmartGridComm - Distributed models for sparse attack construction and State Vector estimation in the smart grid
2012 IEEE Third International Conference on Smart Grid Communications (SmartGridComm), 2012Co-Authors: Mete Ozay, Iñaki Esnaola, Sanjeev R. Kulkarni, Fatos T. Yarman Vural, H. Vincent PoorAbstract:Two distributed attack models and two distributed State Vector estimation methods are introduced to handle the sparsity of smart grid networks in order to employ unobservable false data injection attacks and estimate State Vectors. First, Distributed Sparse Attacks in which attackers process local measurements in order to achieve consensus for an attack Vector are introduced. In the second attack model, called Collective Sparse Attacks, it is assumed that the topological information of the network and the measurements is available to attackers. However, attackers employ attacks to the groups of State Vectors. The first distributed State Vector estimation method, called Distributed State Vector Estimation, assumes that observed measurements are distributed in groups or clusters in the network. The second method, called Collaborative Sparse State Vector Estimation, consists of different operators estimating subsets of State variables. Therefore, State variables are assumed to be distributed in groups and accessed by the network operators locally. The network operators compute their local estimates and send the estimated values to a centralized network operator in order to update the estimated values.
Yakir Aharonov - One of the best experts on this subject based on the ideXlab platform.
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Measurement and collapse within the two-State Vector formalism
Quantum Studies: Mathematics and Foundations, 2014Co-Authors: Yakir Aharonov, Eliahu Cohen, Eyal Gruss, Tomer LandsbergerAbstract:The notion of collapse is discussed and refined within the two-State Vector formalism (TSVF). We show how a definite result of a measurement can be fully determined when considering specific forward- and backward-evolving quantum States. Moreover, we show how macroscopic time reversibility is attained, at the level of a single branch of the wavefunction, when several conditions regarding the final State and dynamics are met, a property for which we coin the term “classical robustness under time-reversal”. These entail a renewed perspective on the measurement problem, the Born rule and the many-worlds interpretation.
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the two State Vector formalism an updated review
Lecture Notes in Physics, 2008Co-Authors: Yakir Aharonov, Lev VaidmanAbstract:The two-State Vector formalism of quantum mechanics is a time-symmetrized approach to standard quantum theory particularly helpful for the analysis of experiments performed on preand post-selected ensembles. It allows to see numerous peculiar effects which naturally arise in this approach. In particular, the concepts of “weak measurements” (standard measurements with weakening of the interaction) and “weak values” (the outcomes of weak measurements) reveal a very unusual but consistent picture. Recently, more and more effects are viewed as manifestations of weak measurements and more and more weak measurement experiments have been performed. The polemic about the validity of the approach and the meaning of its concepts never stopped. The number of papers written on the subject almost doubled since publication of the first version of the review. The current review does not explain in details the new results, but it puts the development of the approach in the proper context and provides citations for further reading.
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The Two-State Vector Formalism of Qauntum Mechanics: an Updated Review
arXiv: Quantum Physics, 2001Co-Authors: Yakir Aharonov, Lev VaidmanAbstract:In this paper we present the two-State Vector formalism of quantum mechanics. It is a time-symmetrized approach to standard quantum theory particularly helpful for the analysis of experiments performed on pre- and post-selected ensembles. Several peculiar effects which naturally arise in this approach are considered. In particular, the concept of ``weak measurements'' (standard measurements with weakening of the interaction) is discussed in depth revealing a very unusual but consistent picture. Also, a design of a gedanken experiment which implements a kind of quantum ``time machine'' is described. The issue of time-symmetry in the context of the two-State Vector formalism is clarified.
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The Two-State Vector Formalism of Quantum Mechanics
Time in Quantum Mechanics, 1Co-Authors: Yakir Aharonov, Lev VaidmanAbstract:We present the two-State Vector formalism of quantum mechanics. It is a time-symmetrized approach to standard quantum theory particularly helpful for the analysis of experiments performed on pre- and post-selected ensembles. Several peculiar effects which naturally arise in this approach are considered. In particular, the concept of “weak measurements” (standard measurements with weakening of the interaction) is discussed in depth revealing a very unusual but consistent picture. Also, a design of a gedanken experiment which implements a kind of quantum “time machine” is described. The issue of time-symmetry in the context of the two-State Vector formalism is clarified.
