Phase-controlled quantum transport signatures in a quantum dot-Majorana hybrid ring system
arXiv:2510.07826 · doi:10.1063/5.0289344
Abstract
We investigate the quantum transport in a hybrid ring system consisting of a quantum dot (QD) coupled to two Majorana bound states (MBSs) hosted in a topological superconducting nanowire, threaded by a magnetic flux. Utilizing the dissipaton equation-of-motion approach, we demonstrate that the differential conductance shows periodic behavior and its periodicity depends on both the QD energy level and the MBS overlapping. A zero-bias peak (ZBP) emerges as a result of the balance between normal and anomalous tunneling processes, associated with the presence of a single MBS. Beyond the phase-dependent periodic behavior, the shot noise exhibits voltage-dependent transitions between sub-Poissonian (), Poissonian (), and super-Poissonian () regimes. Strikingly, we find a giant Fano factor () emerging at the balance point, accompanied by a peak in the shot noise. This distinctive feature may serve as a supplementary signature for MBS detection. However, both ZBP in the differential conductance and shot noise peak are degraded by thermal effects.
arXiv comment11 pages, 4 figures
References in corpus (58)
- Fault-tolerant quantum computation by anyons
- Non-Abelian Anyons and Topological Quantum Computation
- Unpaired Majorana fermions in quantum wires
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Helical liquids and Majorana bound states in quantum wires
- Shot Noise in Mesoscopic Conductors
- Quantum state engineering with Josephson-junction devices
- Majorana fermions in a tunable semiconductor device
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Majorana Fermion Induced Resonant Andreev Reflection
- Tunneling characteristic of a chain of Majorana bound states
- Perspective: Numerically "exact" approach to open quantum dynamics: The hierarchical equations of motion (HEOM)
- Milestones toward Majorana-based quantum computing
- Exact dynamics of dissipative electronic systems and quantum transport: Hierarchical equations of motion approach
- Detecting a Majorana-Fermion Zero Mode Using a Quantum Dot
- Exact quantum master equation via the calculus on path integrals
- Non-Abelian operations on Majorana fermions via single charge control
- Two terminal charge tunneling: Disentangling Majorana zero modes from partially separated Andreev bound states in semiconductor-superconductor heterostructures
- Majorana bound states in non-homogeneous semiconductor nanowires
- Hierarchical Liouville-space approach for accurate and universal characterization of quantum impurity systems
- Subtle leakage of a Majorana mode into a quantum dot
- Quantum information transfer between topological and spin qubit systems
- Modulation of Majorana-Induced Current Cross-Correlations by Quantum Dots
- Probing Majorana Physics in Quantum Dot Shot Noise Experiments
- Conductance-matrix symmetries of a three-terminal hybrid device
- An experimentally accessible quality factor for Majorana wires
- Probing the existence and dynamics of Majorana fermion via transport through a quantum dot
- Nonlocal conductance spectroscopy of Andreev bound states: Symmetry relations and BCS charges
- Doubled Full Shot Noise in Quantum Coherent Superconductor - Semiconductor Junctions
- Emission and Absorption quantum noise measurement with an on-chip resonant circuit
- Kondo memory in driven strongly-correlated quantum dots
- How to infer non-Abelian statistics and topological invariants from tunneling conductance properties of realistic Majorana nanowires
- Asymmetric Quantum Shot Noise in Quantum Dots
- Theoretical investigation of the dynamic electronic response of a quantum dot driven by time-dependent voltage
- Dynamic Coulomb blockade in single-lead quantum dots
- Quantum Noise Measurement of a Carbon Nanotube Quantum Dot in the Kondo Regime
- Effects of Herzberg--Teller vibronic coupling on coherent excitation energy transfer
- The noise spectra of a biased quantum dot
- Steps and dips in the ac conductance and noise of mesoscopic structures
- Transient Current-Current Correlations and Noise Spectra
- Noise spectrum of a quantum dot-resonator lasing circuit
- Transport through a quantum dot coupled to two Majorana bound states
- Majorana finite frequency nonequilibrium quantum noise
- Nonequilibrium Majorana fluctuations
- Probing Robust Majorana Signatures by Crossed Andreev Reflection with a Quantum Dot
- Majorana ensembles with fractional entropy and conductance in nanoscopic systems
- Emission Noise and High Frequency Cut-Off of the Kondo Effect in a Quantum Dot
- Entangled system-and-environment dynamics: Phase-space dissipaton theory
- Quantum transport through a quantum dot side-coupled to a Majorana bound state pair in the presence of electron-phonon interaction
- Detecting coupling of Majorana bound states with an Aharonov-Bohm interferometer
- Differential current noise as an identifier of Andreev bound states that induce nearly quantized conductance plateaus
- Nonequilibirum noise spectrum and Coulomb-blockade-assisted Rabi interference in a double-dot Aharonov-Bohm interferometer
- Phonon-Assisted Tunneling through Quantum Dot Systems Connected to Majorana Bound States
- Nonequilibrium finite frequency resonances in differential quantum noise driven by Majorana interference
- Mechanism of current noise spectrum in a nonequilibirum Kondo dot system
- Memory effect preserved time-local approach to noise spectrum of transport current
- Non-Markovian correlation functions for open quantum systems
- Distinguishing Majorana bound states from Andreev bound states through differential conductance and current noise spectrum