Noise-assisted quantum transport and computation

Abstract

The transmission of an excitation along a spin chain can be hindered by the presence of small fixed imperfections that create trapping regions where the excitation may get caught (Anderson localization). A certain degree of noise, ensuing from the interaction with a thermal bath, allows to overcome localization (noise-assisted transport). In this paper we investigate the relation between noise-assisted transport and (quantum) computation. In particular we prove that noise does assist classical computation on a quantum computing device but hinders the possibility of creating entanglement.

11 pages, 7 figures

References in corpus (4)

• Environment-Assisted Quantum Transport
• Time-dependent density functional theory on a lattice
• Grover's algorithm on a Feynman computer
• Time-dependent density functional theory for open spin chains

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• On the quantumness of multiparameter estimation problems for qubit systems
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• Quantum work statistics with initial coherence
• Excitation dynamics in chain-mapped environments
• Scattering as a quantum metrology problem: a quantum walk approach
• An Enhanced Photonic Quantum Finite Automaton
• Short-time particle motion in one and two-dimensional lattices with site disorder
• Zitterbewegung with spin-orbit coupled ultracold atoms in a fluctuating optical lattice
• Dephasing assisted transport on a biomimetic ring structure
• Experimental realization of local-to-global noise transition in a two-qubit optical simulator