101 Hits in 5.3 sec

Maxwell's demon and information channel width of a black hole [article]

Liangsuo Shu, Xiaokang Liu, Shiping Jin, Suyi Huang
2016 arXiv   pre-print
We find the bound of the information channel width of a black hole, which is determined by the variation rate of the horizon temperature and the mass of the black hole's shell(the accretion disk close  ...  Using a new generalized second law of thermodynamics, the information and entropy of a black hole and its accretion disk are analyzed respectively.  ...  A bound of the information channel width of black hole was found.  ... 
arXiv:1603.00682v2 fatcat:ua5u3h37a5aajgd23a4drfvj2e

Passivity breaking of a local vacuum state in a quantum Hall system [article]

Go Yusa, Wataru Izumida, Masahiro Hotta
2011 arXiv   pre-print
We model a quantum Hall edge channel as a quantum entangled many-body channel and the zero-point fluctuation in the charge density of the channel as the vacuum state.  ...  It can be used to demonstrate Maxwell's demon or quantum energy teleportation in which no physical entity transports energy.  ...  (i.e., the entropy of the black hole [6] ).  ... 
arXiv:1101.2766v1 fatcat:tiutf2tflzalbp2jd23paxj5cu

Colloquium: The physics of Maxwell's demon and information

Koji Maruyama, Franco Nori, Vlatko Vedral
2009 Reviews of Modern Physics  
We also highlight some of the recent work that explores the role of information, illuminated by Maxwell's demon, in the arena of quantum information theory.  ...  Maxwell's demon was born in 1867 and still thrives in modern physics. He plays important roles in clarifying the connections between two theories: thermodynamics and information.  ...  ACKNOWLEDGMENTS K.M. is grateful to Alex Zagoskin for a careful reading of the paper and helpful suggestions.  ... 
doi:10.1103/revmodphys.81.1 fatcat:b7vl4bjt2nb5fb4kmgbrlggbt4

Quantum energy teleportation in a quantum Hall system

Go Yusa, Wataru Izumida, Masahiro Hotta
2011 Physical Review A. Atomic, Molecular, and Optical Physics  
Using a quantum Hall system as a realistic model, we discuss the physical significance of QET and estimate the order of energy gain using reasonable experimental parameters.  ...  We propose an experimental method for a quantum protocol termed quantum energy teleportation (QET), which allows energy transportation to a remote location without physical carriers.  ...  Akiba and T. Yuge for the fruit-  ... 
doi:10.1103/physreva.84.032336 fatcat:dx5z5hschbbfjf6m4phaajifne

The Physics of Information [article]

F. Alexander Bais, J. Doyne Farmer
2007 arXiv   pre-print
Finally we make a small excursion to the interface betweeen quantum theory and general relativity, where one is confronted with an "ultimate information paradox" posed by the physics of Black Holes.  ...  A close examination of the foundations of statistical mechanics and the need to reconcile the probabilistic and deterministic views of the world leads us to a discussion of chaotic dynamics, where information  ...  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.  ... 
arXiv:0708.2837v2 fatcat:n2clqqo3qvgl5la4mnzbmmd7ne

Ratcheting up protein translocation with anthrax toxin

Geoffrey K. Feld, Michael J. Brown, Bryan A. Krantz
2012 Protein Science  
A picture is emerging of proton-gradientdriven anthrax toxin translocation, and its associated ratchet mechanism likely applies broadly to other systems.  ...  A number of ingenious solutions to this problem are now evident in the anthrax toxin system, a model used to study protein translocation.  ...  Mark Fisher at the University of Kansas Medical Center for graciously providing an EM density map of the PA 7 channel. The authors also thank members of the Krantz lab and Prof.  ... 
doi:10.1002/pro.2052 pmid:22374876 pmcid:PMC3403459 fatcat:lnjzst6so5d2zkr34rw5jxx6ta

Quantifying nonequlibrium thermodynamic operations in a multi-terminal mesoscopic system [article]

Fatemeh Hajiloo, Rafael Sánchez, Robert S. Whitney, Janine Splettstoesser
2020 arXiv   pre-print
We previously showed that cooling and power production can occur in the absence of energy and particle currents from a nonequilibrium resource (calling this an N-demon).  ...  These efficiencies are well-behaved for equilibrium and nonequilibrium resources, and have an upper-bound imposed by the laws of thermodynamics.  ...  We refer to these systems as N-demons for their analogies to Maxwell's demon that can apparently violate the second law, when coupled to a working substance.  ... 
arXiv:2008.01791v1 fatcat:heq4xviovvabnahxldv4uyjecy

Light, the universe and everything – 12 Herculean tasks for quantum cowboys and black diamond skiers

Girish Agarwal, Roland E. Allen, Iva Bezděková, Robert W. Boyd, Goong Chen, Ronald Hanson, Dean L. Hawthorne, Philip Hemmer, Moochan B. Kim, Olga Kocharovskaya, David M. Lee, Sebastian K. Lidström (+20 others)
2018 Journal of Modern Optics  
The Winter Colloquium on the Physics of Quantum Electronics (PQE) has been a seminal force in quantum optics and related areas since 1971.  ...  In January, 2017, the participants of PQE were asked to consider the equally important prospects for the future, and to formulate a set of questions representing some of the greatest aspirations in this  ...  Acknowledgements SL would like to thank Texas A&M for the hospitality shown during the completion of this work. SKL is grateful to REA for excellent supervision of his undergraduate project.  ... 
doi:10.1080/09500340.2018.1454525 fatcat:hsg6u4nlubaqjgdhwmzjt6vhii

The thermodynamics of computation—a review

Charles H. Bennett
1982 International Journal of Theoretical Physics  
The old Maxwell's demon problem is discussed in the light of the relation between logical and thermodynamic reversibility: the essential irreversible step, which prevents the demon from breaking the second  ...  The mathematical means of rendering a computation logically reversible (e.g., creation and annihilation of a history file) will be discussed.  ...  the Maxwell's demon problem.  ... 
doi:10.1007/bf02084158 fatcat:cwcwum3phbdbtb25qpzxii7jvm

Classical Demons and Quantum Angels: On 't Hooft's deterministic Quantum Mechanics [article]

Antoine Suarez
2007 arXiv   pre-print
It is argued that 't Hooft's deterministic program does not disenchant the quantum world but rather inspires the incantation of the classical one.  ...  In this sense it is natural to assume that, if a black-hole evaporates, the resulting radiation should be capable of informing observers in the outside region about what falls into the hole and about new  ...  This means that a black hole singularity has no physical reality.  ... 
arXiv:0705.3974v1 fatcat:gyieqqyaw5fkdbsy67qfimnxoq

Channels, measurements and post-selection in quantum thermodynamics [article]

Tom Purves, Tony Short
2020 arXiv   pre-print
This highlights a connection between unital and catalytic channels, and some subtleties concerning the conditional work cost of implementing a measurement given that a certain result was obtained.  ...  We analyse the benefit, in terms of extracting work, of having a single use of a quantum channel or measurement in quantum thermodynamics.  ...  such as collections of few atoms [1] , and massive exotic phenomena such as black holes [2] .  ... 
arXiv:2008.09065v1 fatcat:rhcnn5opdjhprdt4d6f5mnrdmy

Bespoke Physics for Living Technology

David H. Ackley
2013 Artificial Life  
By contrast, artificial living organisms can be implemented in computers using relatively few bits, and copying a data structure is trivial.  ...  In the physics of the natural world, basic tasks of life, such as homeostasis and reproduction, are extremely complex operations, requiring the coordination of billions of atoms even in simple cases.  ...  black hole.  ... 
doi:10.1162/artl_a_00117 pmid:23889741 fatcat:jh7ryfnjandihl6wuvuq7zpyde

The arrow of time and the nature of spacetime [article]

George F R Ellis
2013 arXiv   pre-print
This paper extends the work of a previous paper [arXiv:1208.2611] on the flow of time, to consider the origin of the arrow of time.  ...  It proposes that a 'past condition' cascades down from cosmological to micro scales, being realized in many microstructures and setting the arrow of time at the quantum level by top-down causation.  ...  I thank the National Research Foundation (South Africa) and the University of Cape Town for support, and the referee for a careful reading of the paper that has led to significant improvement.  ... 
arXiv:1302.7291v2 fatcat:qsrnzyc2p5edpdba6zlagaq67e

"Hot" electrons in metallic nanostructures – non-thermal carriers or heating? [article]

Yonatan Dubi, Yonatan Sivan
2019 arXiv   pre-print
Our formulation allows for the first time a unique quantitative comparison of theory and measurements of steady-state electron distributions in metallic nanostructures.  ...  Elucidating this interplay is challenging, as it requires taking into account all channels of energy flow in the electronic system.  ...  Electron excitation due to photon absorption increases the electron energy byhω, thus, generating an electron and a hole, see Fig. S1 (a) and Fig.  ... 
arXiv:1810.00565v4 fatcat:hse5atmjwffkblve473xjeiafm

Experimental methods of molecular matter-wave optics

Thomas Juffmann, Hendrik Ulbricht, Markus Arndt
2013 Reports on progress in physics (Print)  
Nanoparticle quantum optics is a growing field, which will intrigue researchers still for many years to come. This review can, therefore, only be a snapshot of a very dynamical process.  ...  We describe the state of the art in preparing, manipulating and detecting coherent molecular matter.  ...  Acknowledgments MA owes special thanks to Anton Zeilinger with whom we started the first quantum experiments with macromolecules and who has remained a driving force in questioning the status quo of knowledge  ... 
doi:10.1088/0034-4885/76/8/086402 pmid:23907707 fatcat:bsba2ymt6rejtiskanvw6rq6ii
« Previous Showing results 1 — 15 out of 101 results