Thermoelectric signatures of a Majorana bound state coupled to a quantum dot

Abstract

We theoretically investigate the possibility to use thermolectric measurements to detect Majorana bound states and to investigate their coupling to a dissipative environment. The particle-hole symmetry of Majorana states would normally lead to a vanishing Seebeck coefficient, i.e., a vanishing open-circuit voltage resulting from a temperature gradient. We discuss how coupling to a quantum dot with a gate-controlled energy level breaks particle-hole symmetry in a tunable manner. The resulting gate-dependent Seebeck coefficient provides a new way to evidence the existence of Majorana states, which can be combined with conventional tunnel spectroscopy in the same setup. Furthermore, the thermoelectric properties rely on the ability of the quantum dot-Majorana system to sense the temperature of the bulk superconductor and can be used to extract information about the dissipative decay of Majorana states, which is crucial for quantum information applications.

13 pages, 4 figures. Published version

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• Thermoelectric transport through Majorana bound states and violation of Wiedemann-Franz law
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• Tuning of heat and charge transport by Majorana fermions
• Thermopower of three-terminal topological superconducting systems
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• Quantum transport through a quantum dot side-coupled to a Majorana bound state pair in the presence of electron-phonon interaction
• Majorana differential shot noise and its universal thermoelectric crossover
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• Isolating Majorana fermions with finite Kitaev nanowires and temperature: the universality of the zero-bias conductance
• InAs nanowire superconducting tunnel junctions: spectroscopy, thermometry and nanorefrigeration
• Properties of the Majorana-state tunneling Josephson junction mediated by an interacting quantum dot
• Thermoelectric processes of quantum normal-superconductor interfaces
• Thermoelectric transport through a finite-$U$ quantum dot side-coupled to Majorana bound state
• Nonequilibrium finite frequency resonances in differential quantum noise driven by Majorana interference
• Nonlocal thermoelectricity in quantum wires as a signature of Bogoliubov-Fermi points
• Phonon-Assisted Tunneling through Quantum Dot Systems Connected to Majorana Bound States
• Majorana-Kondo competition in a cross-shaped double quantum dot-topological superconductor system
• Probing Majorana Bound States via Thermoelectric Transport
• Majorana Thermoelectrics and Refrigeration
• Thermopower signatures and spectroscopy of the canyon of conductance suppression
• Thermoelectric fluctuations of interfering Majorana bound states
• Majorana Bound States hallmark in a quantum topological interferometer ring
• Fluctuation response of a minimal Kitaev chain in nonequilibrium states
• Conductance matrix symmetries of multiterminal semiconductor-superconductor devices
• Interplay of correlations and Majorana mode from local solution perspective