Consensus of quantum networks with continuous-time markovian dynamics
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Shi, Guodong; Dong, Daoyi; Petersen, Ian; Johansson , Karl Henrik
Description
In this paper, we investigate the convergence of the state of a quantum network to a consensus (symmetric) state. The state evolution of the quantum network with continuous-time swapping operators can be described by a Lindblad master equation, which also introduces an underlying interaction graph for the network. For a fixed quantum interaction graph, we prove that the state of a quantum network with continuous-time Markovian dynamics converges to a consensus state, with convergence rate given...[Show more]
dc.contributor.author | Shi, Guodong | |
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dc.contributor.author | Dong, Daoyi | |
dc.contributor.author | Petersen, Ian | |
dc.contributor.author | Johansson , Karl Henrik | |
dc.coverage.spatial | Shenyang | |
dc.date.accessioned | 2015-12-10T21:56:01Z | |
dc.date.created | June 29 2014-July 4 2014 | |
dc.identifier.uri | http://hdl.handle.net/1885/39228 | |
dc.description.abstract | In this paper, we investigate the convergence of the state of a quantum network to a consensus (symmetric) state. The state evolution of the quantum network with continuous-time swapping operators can be described by a Lindblad master equation, which also introduces an underlying interaction graph for the network. For a fixed quantum interaction graph, we prove that the state of a quantum network with continuous-time Markovian dynamics converges to a consensus state, with convergence rate given by the smallest nonzero eigenvalue of a matrix serving as the Laplacian of the quantum interaction graph. We show that this convergence rate can be optimized via standard convex programming given a fixed amount of edge weights. For switching quantum interaction graphs, we establish necessary and sufficient conditions for exponential quantum consensus and asymptotic quantum consensus, respectively. The convergence analysis is based on a bridge built between the proposed quantum consensus scheme and classical consensus dynamics, in that quantum consensus of n qubits naturally defines a consensus process on an induced classical graph with 22n nodes. Existing consensus results on classical networks can thus be adopted to establish the quantum consensus convergence. | |
dc.publisher | IEEE | |
dc.relation.ispartofseries | 11th World Congress on Intelligent Control and Automation (WCICA) 2014 | |
dc.source | Proceeding of the 11th World Congress on Intelligent Control and Automation | |
dc.title | Consensus of quantum networks with continuous-time markovian dynamics | |
dc.type | Conference paper | |
local.description.notes | Imported from ARIES | |
dc.date.issued | 2014 | |
local.identifier.absfor | 090602 - Control Systems, Robotics and Automation | |
local.identifier.absfor | 010203 - Calculus of Variations, Systems Theory and Control Theory | |
local.identifier.ariespublication | U5431022xPUB173 | |
local.type.status | Published Version | |
local.contributor.affiliation | Shi, Guodong, College of Engineering and Computer Science, ANU | |
local.contributor.affiliation | Dong, Daoyi, University of New South Wales | |
local.contributor.affiliation | Petersen, Ian, University of New South Wales, ADFA | |
local.contributor.affiliation | Johansson , Karl Henrik , Access Linnaeus Centre, School of Electrical Engineering | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.startpage | 307 | |
local.bibliographicCitation.lastpage | 312 | |
local.identifier.doi | 10.1109/WCICA.2014.7052732 | |
local.identifier.absseo | 970101 - Expanding Knowledge in the Mathematical Sciences | |
local.identifier.absseo | 970109 - Expanding Knowledge in Engineering | |
dc.date.updated | 2015-12-09T07:33:52Z | |
local.identifier.scopusID | 2-s2.0-84932165672 | |
Collections | ANU Research Publications |
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