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Testing a quantum error-correcting code on various platforms.

Qihao Guo1, Yuan-Yuan Zhao2, Markus Grassl3

  • 1Institute for Quantum Computing, Baidu Research, Beijing 100193, China; Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049, China; Center for Quantum Computing, Peng Cheng Laboratory, Shenzhen 518055, China.

Science Bulletin
|January 19, 2023
PubMed
Summary
This summary is machine-generated.

We developed a simple two-qubit quantum error correction code for amplitude damping. This quantum error correction method shows an advantage on current quantum computing platforms when damping rates are high.

Keywords:
NMR systemOptical platformQuantum computationQuantum error correctionSuperconducting circuit

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Area of Science:

  • Quantum Information Science
  • Quantum Computing
  • Quantum Error Correction

Background:

  • Quantum error correction is crucial for fault-tolerant quantum computation.
  • Experimental realization is challenging due to high qubit and gate fidelity requirements.
  • Detected amplitude damping is a common noise channel in quantum systems.

Purpose of the Study:

  • To propose and experimentally demonstrate a simple quantum error-correcting code for the detected amplitude damping channel.
  • To investigate the performance of this code on various quantum information processing platforms.
  • To highlight the practical advantage of quantum error correction in current noisy quantum systems.

Main Methods:

  • Development of a two-qubit quantum error-correcting code.
  • Experimental implementation of encoding, channel simulation, and recovery operations.
  • Testing on an optical platform, the IBM Quantum Experience, and a nuclear magnetic resonance system.

Main Results:

  • The proposed quantum error correction code effectively combats detected amplitude damping.
  • An error correction advantage was observed across all tested platforms above a specific damping rate threshold.
  • Comparative analysis of system features and performance was conducted.

Conclusions:

  • A simple, two-qubit quantum error correction code offers practical advantages against amplitude damping.
  • The experimental validation on diverse platforms demonstrates the code's robustness and applicability.
  • Quantum error correction is beneficial for current quantum computing technologies, especially under significant noise.