scholarly journals Energy-Efficient Mining on a Quantum-Enabled Blockchain Using Light

Ledger ◽  
2019 ◽  
Vol 4 ◽  
Author(s):  
Adam J Bennet ◽  
Shakib Daryanoosh
Keyword(s):  
Quantum Information ◽  
Energy Efficient ◽  
Quantum Physics ◽  
Network Code ◽  
Digital Systems ◽  
Quantum Devices ◽  
Classical Information ◽  
Open Questions ◽  
Interactive Mining ◽  
Quantum Internet

We outline a quantum-enabled blockchain architecture based on a consortium of quantum servers. The network is hybridised, utilising digital systems for sharing and processing classical information combined with a fibre-optic infrastructure and quantum devices for transmitting and processing quantum information. We deliver an energy efficient interactive mining protocol enacted between clients and servers which uses quantum information encoded in light and removes the need for trust in network infrastructure. Instead, clients on the network need only trust the transparent network code, and that their devices adhere to the rules of quantum physics. To demonstrate the energy efficiency of the mining protocol, we elaborate upon the results of two previous experiments (one performed over 1km of optical fibre) as applied to this work. Finally, we address some key vulnerabilities, explore open questions, and observe forward-compatibility with the quantum internet and quantum computing technologies.

Probabilistic secret sharing through noise quantum channe

2012 ◽  
Vol 12 (3&4) ◽  
pp. 253-261
Author(s):  
Satyabrata Adhikari ◽  
Indranil Chakrabarty ◽  
Pankaj Agrawal
Keyword(s):  
Quantum Information ◽  
Secret Sharing ◽  
Mixed State ◽  
Pure State ◽  
Noisy Channel ◽  
Noisy Channels ◽  
Superdense Coding ◽  
Classical Information ◽  
Phase Damping ◽  
Realistic Situation

In a realistic situation, the secret sharing of classical or quantum information will involve the transmission of this information through noisy channels. We consider a three qubit pure state. This state becomes a mixed-state when the qubits are distributed over noisy channels. We focus on a specific noisy channel, the phase-damping channel. We propose a protocol for secret sharing of classical information with this and related noisy channels. This protocol can also be thought of as cooperative superdense coding. We also discuss other noisy channels to examine the possibility of secret sharing of classical information.

A resource-based view of quantum information

2004 ◽  
Vol 4 (6&7) ◽  
pp. 460-466
Author(s):  
C.H. Bennett
Keyword(s):  
Quantum Information ◽  
Source Coding ◽  
Adequate Description ◽  
Tripartite Entanglement ◽  
Classical Communication ◽  
Resource Based View ◽  
Open Questions ◽  
Classical Information Theory

We survey progress in understanding quantum information in terms of equivalences, reducibilities, and asymptotically achievable rates for transformations among nonlocal resources such as classical communication, entanglement, and particular quantum states or channels. In some areas, eg source coding, there are straightforward parallels to classical information theory; in others eg entanglement-assisted communication, new effects and tradeoffs appear that are beginning to be fairly well understood, or the remaining uncertainty has become focussed on a few simple open questions, such as conjectured additivity of the Holevo capacity. In still other areas, e.g. the role of the back communication and the classification of tripartite entanglement, much remains unknown, and it appears unlikely that an adequate description exists in terms of a finite number of resources.

scholarly journals A Mathematical Bridge between Discretized Gauge Theories in Quantum Physics and Approximate Reasoning in Pairwise Comparisons

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Jean-Pierre Magnot
Keyword(s):  
Information Theory ◽  
Quantum Physics ◽  
Gauge Theories ◽  
Approximate Reasoning ◽  
Pairwise Comparisons ◽  
Open Questions

We describe a mathematical link between aspects of information theory, called pairwise comparisons, and discretized gauge theories. The link is made by the notion of holonomy along the edges of a simplex. This correspondence leads to open questions in both fields.

Open Questions in Quantum Physics

1986 ◽  
Vol 37 (7) ◽  
pp. 303-303
Author(s):  
P T Landsberg
Keyword(s):  
Quantum Physics ◽  
Open Questions

Quantum Information

MRS Bulletin ◽  
2005 ◽  
Vol 30 (2) ◽  
pp. 99-104 ◽  
Author(s):  
Luiz Davidovich
Keyword(s):  
Quantum Information ◽  
San Francisco ◽  
Quantum Physics ◽  
Quantum Algorithms ◽  
Rapid Development ◽  
Superposition Principle ◽  
Deep Understanding ◽  
Single Atom ◽  
Recent Developments ◽  
Fundamental Research

AbstractThe following article is based on the plenary address by Luiz Davidovich (Federal University of Rio de Janeiro), presented on April 14, 2004, at the 2004 MRS Spring Meeting in San Francisco. The field of quantum information is a discipline that aims to investigate methods for characterizing, transmitting, storing, compressing, and computationally utilizing the information carried by quantum states. It owes its rapid development over the last few years to several factors: the ability, developed in several laboratories, to control and measure simple microscopic systems; the discovery of fast quantum algorithms; and the recognition that Moore's law will soon lead to the single-atom limit of elementary computing gates.Cryptography and quantum computing are among the main applications in the field.They rely on the subtle and fundamental properties of the quantum world: the unavoidable disturbance associated with measurement, the superposition principle, and the nonlocal properties of entangled states. Progress in this area is intimately connected to a deep understanding of quantum physics: recent achievements include the experimental demonstration of teleportation and detailed investigations of the role of the environment in the quantum–classical transition. This article reviews basic concepts and recent developments in the field of quantum information, emphasizing the close ties between fundamental research and possible applications.

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