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Updated: Aug 6, 2026
15:47
Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
Published on: November 1, 2013
Coulomb interaction unlocks Majorana-mediated electron teleportation between quantum dots
Sirui Yu1, Hong Mao1, Jinshuang Jin1
1School of Physics, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China.
The Journal of Chemical Physics
|July 22, 2026
Summary
Coulomb interaction enables electron teleportation in quantum dots coupled by Majorana zero modes. This nonlocal transport is detectable via cross-correlation noise, offering a new control method for topological quantum devices.
Area of Science:
- Condensed Matter Physics
- Quantum Information Science
- Mesoscopic Physics
Background:
- Majorana zero modes (MZMs) are exotic quasiparticles with potential in topological quantum computing.
- Quantum transport in hybrid systems with quantum dots (QDs) and MZMs is crucial for exploring novel quantum phenomena.
- Understanding nonlocal correlations mediated by MZMs is key to harnessing their properties.
Purpose of the Study:
- Investigate quantum transport through a hybrid system of two QDs coupled by MZMs.
- Analyze the role of Coulomb interaction (U) on nonlocal correlations and electron teleportation.
- Explore the potential of Coulomb interaction as a control parameter for Majorana-mediated transport.
Main Methods:
- Utilized the numerically exact fermionic dissipation equation of motion method.
- Calculated transient current and current-current cross-correlation noise spectrum.
- Studied systems with negligible Majorana coupling energy (ɛM → 0) and varying Coulomb interaction (U).
Main Results:
- In the non-interacting case (U=0), destructive interference suppresses electron teleportation.
- Finite Coulomb interaction (U>0) lifts channel degeneracy, enabling strong nonlocal correlations and inter-dot electron teleportation.
- The cross-correlation noise spectrum shows a robust signal for teleportation, stronger than effects from finite Majorana coupling energy.
Conclusions:
- Coulomb interaction is a critical factor for observing nonlocal transport and electron teleportation in QD-MZM systems.
- Finite Coulomb interaction overcomes destructive interference, facilitating Majorana-mediated nonlocal correlations.
- Proposes Coulomb interaction as an experimentally accessible control parameter for detecting Majorana-based nonlocal transport in the long-wire limit.
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