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Thermal anyon interferometry in phonon-coupled Kitaev spin liquids

Klocke, Kai and Moore, Joel E. and Alicea, Jason and Halász, Gábor B. (2021) Thermal anyon interferometry in phonon-coupled Kitaev spin liquids. . (Unpublished)

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Recent theoretical studies inspired by experiments on the Kitaev magnet α-RuCl₃ highlight the nontrivial impact of phonons on the thermal Hall conductivity of chiral topological phases. Here we introduce mixed mesoscopic-macroscopic devices that allow refined thermal-transport probes of non-Abelian spin liquids with Ising topological order. These devices feature a quantum-coherent mesoscopic region with negligible phonon conductance, flanked by macroscopic lobes that facilitate efficient thermalization between chiral Majorana edge modes and bulk phonons. We show that our devices enable (i) accurate determination of the quantized thermal Hall conductivity, (ii) identification of non-Abelian Ising anyons via the temperature dependence of the thermal conductance, and most interestingly (iii) single-anyon detection through heat-based anyon interferometry. Analogous results apply broadly to phonon-coupled chiral topological orders.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription Paper
Klocke, Kai0000-0002-9580-8509
Alicea, Jason0000-0001-9979-3423
Additional Information:This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( We thank Chengyun Hua and Alan Tennant for helpful discussions. This material is based upon work supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center. J.A. additionally acknowledges support from the Army Research Office under Grant Award W911NF17-1-0323; the National Science Foundation through grant DMR-1723367; the Caltech Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation through Grant GBMF1250; and the Walter Burke Institute for Theoretical Physics at Caltech. J.E.M. acknowledges additional support from a Simons Investigatorship.
Group:Institute for Quantum Information and Matter, Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC05-00OR22725
Army Research Office (ARO)W911NF17-1-0323
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationGBMF1250
Walter Burke Institute for Theoretical Physics, CaltechUNSPECIFIED
Simons FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:20220104-233139832
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112702
Deposited By: George Porter
Deposited On:05 Jan 2022 16:56
Last Modified:05 Jan 2022 16:56

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