Results 71 to 80 of about 2,059,050 (339)

A Post-Quantum Digital Signature Using Verkle Trees and Lattices

open access: yesSymmetry, 2023
Research on quantum computers has advanced significantly in recent years. If humanity ever creates an effective quantum computer, many of the present public key cryptosystems can be compromised.
Maksim Iavich   +2 more
semanticscholar   +1 more source

Ab Initio Study on 3D Anisotropic Ferroelectric Switching Mechanism and Coercive Field in HfO2 and ZrO2

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye   +6 more
wiley   +1 more source

Blind signature scheme based on entangled quantum

open access: yesTongxin xuebao, 2016
Based on the principle of quantum entanglement swapping, a blind signature scheme based on quantum entanglement was proposed.Through being entangled and exchanged, particles prepared before could transform into entangled state.
Jian-wu LIANG   +3 more
doaj   +2 more sources

Quantum walk on a line for a trapped ion

open access: yes, 2009
We show that a multi-step quantum walk can be realized for a single trapped ion with interpolation between quantum and random walk achieved by randomizing the generalized Hadamard coin flip phase.
A. M. Childs   +5 more
core   +1 more source

Multipartite Entanglement Signature of Quantum Phase Transitions [PDF]

open access: yes, 2006
We derive a general relation between the non-analyticities of the ground state energy and those of a subclass of the multipartite generalized global entanglement (GGE) measure defined by T. R. de Oliveira et al. [Phys. Rev.
Eduardo Miranda   +5 more
core   +3 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Post-Quantum Delegated Proof of Luck for Blockchain Consensus Algorithm

open access: yesApplied Sciences
The advancements in quantum computing and the potential for polynomial-time solutions to traditional public key cryptography (i.e., Rivest–Shamir–Adleman (RSA) and elliptic-curve cryptography (ECC)) using Shor’s algorithm pose a serious threat to the ...
Hyunjun Kim   +4 more
doaj   +1 more source

Large scale-small scale duality and cosmological constant [PDF]

open access: yes, 1999
We study a model of quantum cosmology originating from a classical model of gravitation where a self interacting scalar field is coupled to gravity with the metric undergoing a signature transition.
Carlini   +4 more
core   +2 more sources

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

A secure and efficient identity-based quantum signature scheme

open access: yesAIP Advances
In recent years, identity-based quantum signature protocols have received much attention due to their unique advantages. Based on Bell states, we propose an efficient identity-based quantum signature scheme.
Bai Liu, Pengda Zhu, Kuikui Guo
doaj   +1 more source

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