Finite temperature quantum noise correlations as a probe for topological helical edge modes

Abstract

The distinction between chiral, trivial helical, and topological helical edge modes can be effectively made using quantum noise measurements at finite temperatures. Quantum noise measurements consist of mainly two components. The first is thermal noise, whose provenance is thermal fluctuations, and the second is shot noise, whose origin is the quantum nature of charge particles. Studying these edge modes at finite temperatures is important as it more accurately reflects the conditions in real-world experiments. Additionally, we have verified that our results for finite temperature quantum noise correlations are valid at finite frequencies too.

33 pages, 17 figures, accepted for publication in Phys. Rev. B

References in corpus (7)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Nonlocal edge state transport in the quantum spin Hall state
• Shot Noise of Spin-Decohering Transport in Spin-Orbit Coupled Nanostructures
• Delta-T noise for fractional quantum Hall states at different filling factor
• Electric field-induced edge state oscillations in GaSb/InAs quantum wells
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Cited by in corpus (4)

• $\Delta T$-noise in Multiterminal Hybrid Systems
• Probing the dichotomy between Yu-Shiba-Rusinov and Majorana bound states via conductance, quantum noise and ${\Delta }_T$ noise
• Reaching Van den Broeck limit in linear response and Whitney limit in nonlinear response in edge mode quantum thermoelectrics and refrigeration
• Colored ${\Delta }_T$ noise probes the topological character of edge modes