Routing thermal noise through quantum networks Conference Paper

Author(s): Xuereb, André; Aquilina, Matteo; Barzanjeh, Shabir
Editor(s): Andrews D L; Ostendorf A; Bain A J; Nunzi J M
Title: Routing thermal noise through quantum networks
Title Series: Proceedings of SPIE
Affiliation IST Austria
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.
Keywords: thermal noise; cascaded systems; Quantum devices; thermal rectifier; Nanophotonics
Conference Title: SPIE: The international society for optical engineering
Volume: 10672
Conference Dates: April 22 -26, 2018
Conference Location: Strasbourg, France
ISBN: 0277786X (ISSN); 9781510618701 (ISBN)
Publisher: SPIE  
Date Published: 2018-05-04
Start Page: Article number: 106721N
DOI: 10.1117/12.2309928
Open access: yes (repository)