Results 41 to 50 of about 226,911 (338)

Quantum signature scheme with single photons

, 2005
Quantum digital signature combines quantum theory with classical digital signature. The main goal of this field is to take advantage of quantum effects to provide unconditionally secure signature.
A. Ekert, C. H. Bennett, Chao-jing Tang, D. Mayers, G. Zeng, H. Lee, J. Wang, Jian Wang, M. Curty, M. Hillery, P. Boykin, P. Shor, Quan Zhang   +12 more
core   +1 more source

Quantum attacks on Bitcoin, and how to protect against them [PDF]

, 2017
The key cryptographic protocols used to secure the internet and financial transactions of today are all susceptible to attack by the development of a sufficiently large quantum computer.
Aggarwal, Divesh, Brennen, Gavin K., Lee, Troy, Santha, Miklos, Tomamichel, Marco   +4 more
core   +3 more sources

Measurement-Device Independency Analysis of Continuous-Variable Quantum Digital Signature

Entropy, 2018
With the practical implementation of continuous-variable quantum cryptographic protocols, security problems resulting from measurement-device loopholes are being given increasing attention. At present, research on measurement-device independency analysis
Tao Shang, Ke Li, Jianwei Liu
doaj   +1 more source

A Hash-Based Quantum-Resistant Chameleon Signature Scheme

Sensors, 2021
As a standard digital signature may be verified by anybody, it is unsuitable for personal or economically sensitive applications. The chameleon signature system was presented by Krawczyk and Rabin as a solution to this problem. It is based on a hash then
P. Thanalakshmi, R. Anitha, N. Anbazhagan, Woong Cho, Gyanendra Prasad Joshi, Eunmok Yang   +5 more
doaj   +1 more source

Signature change events: A challenge for quantum gravity?

, 2010
Within the framework of either Euclidian (functional-integral) quantum gravity or canonical general relativity the signature of the manifold is a priori unconstrained.
Alty L, Ambjorn J Loll R Watabiki Y Westra W Zohren S, Angela White, Barceló C, Basu S, Calzetta E A Hu B L, Calzetta E A Hu B L, Dowker F, Dray T, Dray T Hellaby C, Elizalde E, Ellis G, Gibbons G W, Greensite J, Hawking S W, Hawking S W, Hawking S W, Hawking S W, Hayward S A, Hayward S A, Hayward S A, Hayward S A, Hayward S A, Hayward S A, Horowitz G T, Landau L D, Liberati S, Liberati S Jacobson T A Mattingly D, Manogue T Dray C A, Matt Visser, Mattingly D, Mattingly D, Merzbacher E, Odintsov S D, Schutzhold R Unruh W G, Silke Weinfurtner, Sylvester J J, Teitelboim C, Visser M, Visser M, Visser M, Visser M, Visser M, Visser M Barceló C Liberati S, Weinfurtner S, Weinfurtner S, Weinfurtner S, Weinfurtner S Jain P Visser M Gardiner C W   +47 more
core   +2 more sources

A Simple Quantum Computer [PDF]

, 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, A. Imamoglu, A. O. Caldeira, A. Peres, A. Prasad, D. Deutsch, D. Deutsch, D. Deutsch, E. Fredkin, G. J. Milburn, H. Everett III, Isaac L. Chuang, J. Jacobson, K. Obermayer, K. Watanabe, M. Kitagawa, P. G. Kwiat, P. Shor, R. Landauer, S. Lloyd, W. H. Louisell, W. H. Zurek, W. H. Zurek, X. Campos, Y. Yamamoto, Yoshihisa Yamamoto   +25 more
core   +2 more sources

DiLizium: A Two-Party Lattice-Based Signature Scheme

Entropy, 2021
In this paper, we propose DiLizium: a new lattice-based two-party signature scheme. Our scheme is constructed from a variant of the Crystals-Dilithium post-quantum signature scheme.
Jelizaveta Vakarjuk, Nikita Snetkov, Jan Willemson   +2 more
doaj   +1 more source

Ultrafast optical signature of quantum superpositions in a nanostructure

, 2002
We propose an unambiguous signature for detecting quantum superposition states in a nanostructure, based on current ultrafast spectroscopy techniques.
Johnson, N. F., Quiroga, L., Rodriguez, F. J.   +2 more
core   +1 more source

Entanglement of transverse modes in a pendular cavity [PDF]

, 2001
We study the phenomena that arise in the transverse structure of electromagnetic field impinging on a linear Fabry-Perot cavity with an oscillating end mirror.
Gatti, Alessandra, Mancini, Stefano
core   +2 more sources

Recent Progress in Regge Calculus [PDF]

, 1997
While there has been some advance in the use of Regge calculus as a tool in numerical relativity, the main progress in Regge calculus recently has been in quantum gravity. After a brief discussion of this progress, attention is focussed on two particular,
Ambjorn, Barrett, Bock, DeWitt, Friedman, Giulini, Hamber, Hamber, Hamber, Hartle, Hartle, Holm, Morse, Ponzano, R.M. Williams, Regge, Roček, Turaev, Williams, Witten   +19 more
core   +2 more sources