Results 51 to 60 of about 2,059,050 (339)

Improvement of a quantum broadcasting multiple blind signature scheme based on quantum teleportation

open access: yes, 2015
Recently, a broadcasting multiple blind signature scheme based on quantum teleportation has been proposed for the first time. It is claimed to have unconditional security and properties of quantum multiple signature and quantum blind signature.
Qiu, Daowen, Zhang, Wei, Zou, Xiangfu
core   +1 more source

Sequential double quantum blind signature protocol

open access: yesTongxin xuebao, 2015
Considering the fact that both party banks need to sign on the same bill because of the inter-bank E-payment in real life.A sequential double blind signature protocol based on the quantum coherence and quantum entanglement was proposed for the first time.
Hui WANG   +5 more
doaj   +2 more sources

A Simple Quantum Computer [PDF]

open access: yes, 1995
We propose an implementation of a quantum computer to solve Deutsch's problem, which requires exponential time on a classical computer but only linear time with quantum parallelism.
A. Imamoglu   +25 more
core   +2 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

On the "Security analysis and improvements of arbitrated quantum signature schemes"

open access: yes, 2011
Recently, Zou et al. [Phys. Rev. A 82, 042325 (2010)] pointed out that two arbitrated quantum signature (AQS) schemes are not secure, because an arbitrator cannot arbitrate the dispute between two users when a receiver repudiates the integrity of a ...
H. Barnum   +5 more
core   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

open access: yesAdvanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu   +14 more
wiley   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

Non-monotonic entanglement of physical EM field states in non-inertial frames

open access: yes, 2012
We develop a general technique to analyse the quantum effects of acceleration on realistic spatially-localised electromagnetic field states entangled in the polarization degree of freedom.
Eduardo Martín-Martínez   +3 more
core   +2 more sources

Four-wave mixing in coupled semiconductor quantum dots [PDF]

open access: yes, 2002
We present a theoretical analysis of four-wave mixing in coupled quantum dots subject to inhomogeneous broadening. For the biexciton transitions a clear signature of interdot-coupling appears in the spectra. The possibility of experimental observation is
Albrecht   +31 more
core   +1 more source

Quantum Digital Signatures

open access: yes, 2001
We present a quantum digital signature scheme whose security is based on fundamental principles of quantum physics. It allows a sender (Alice) to sign a message in such a way that the signature can be validated by a number of different people, and all will agree either that the message came from Alice or that it has been tampered with.
Gottesman, Daniel, Chuang, Isaac
openaire   +2 more sources

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