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Measurement of Leaf Hydraulic Conductance and Stomatal Conductance and Their Responses to Irradiance and Dehydration Using the Evaporative Flux Method EFM
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Quantized Majorana conductance.

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Researchers observed a quantized conductance plateau of 2e²/h, confirming Majorana zero-modes for topological quantum computing. This finding overcomes previous experimental limitations and supports future braiding experiments.

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Area of Science:

  • Condensed Matter Physics
  • Quantum Computing
  • Materials Science

Background:

  • Majorana zero-modes are promising quasiparticles for topological quantum computing.
  • Tunnelling spectroscopy identifies Majorana zero-modes via zero-bias peaks in differential conductance.
  • Quantization of the zero-bias peak to 2e²/h is predicted by Majorana symmetry but rarely observed.

Purpose of the Study:

  • To experimentally verify the existence of Majorana zero-modes through quantized conductance.
  • To investigate the robustness of the zero-bias peak to various experimental parameters.

Main Methods:

  • Utilizing indium antimonide semiconductor nanowires coated with an aluminum superconducting shell.
  • Performing electrical transport measurements to observe zero-bias conductance peaks.
  • Analyzing the conductance peak's height, stability across magnetic fields and tunnel coupling, and temperature dependence.

Main Results:

  • A quantized conductance plateau at 2e²/h was observed in the zero-bias conductance.
  • The peak height remained constant despite variations in magnetic field and tunnel coupling.
  • The quantized peak demonstrated robustness against electric and magnetic fields and temperature variations.

Conclusions:

  • The observed quantized conductance plateau strongly supports the existence of Majorana zero-modes.
  • This finding validates theoretical predictions and overcomes previous experimental challenges.
  • The results pave the way for advancing topological quantum computing through braiding experiments.