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Routing thermal noise through quantum networks
Author(s): André Xuereb; Matteo Aquilina; Shabir Barzanjeh
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Paper Abstract

There is currently significant interest in operating devices in the quantum regime, where their behaviour cannot be explained through classical mechanics. Quantum states, including entangled states, are fragile and easily disturbed by excessive thermal noise. Here we address the question of whether it is possible to create non-reciprocal devices that encourage the flow of thermal noise towards or away from a particular quantum device in a network. Our work makes use of the cascaded systems formalism to answer this question in the affirmative, showing how a three-port device can be used as an effective thermal transistor, and illustrates how this formalism maps onto an experimentally-realisable optomechanical system. Our results pave the way to more resilient quantum devices and to the use of thermal noise as a resource.

Paper Details

Date Published: 4 May 2018
PDF: 8 pages
Proc. SPIE 10672, Nanophotonics VII, 106721N (4 May 2018); doi: 10.1117/12.2309928
Show Author Affiliations
André Xuereb, Univ. of Malta (Malta)
Matteo Aquilina, National Aerospace Ctr. (Malta)
Shabir Barzanjeh, Institute of Science and Technology Austria (Austria)


Published in SPIE Proceedings Vol. 10672:
Nanophotonics VII
David L. Andrews; Angus J. Bain; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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