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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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Can quantum computers do nothing?

Alexander Nico-Katz1,2, Nathan Keenan1,2,3, John Goold1,2,4

  • 1School of Physics, Trinity College Dublin, Dublin 2, Ireland.

NPJ Quantum Information
|November 29, 2024
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Summary
This summary is machine-generated.

Researchers developed a new method to quantify idle information loss in quantum computing. This addresses a critical challenge in protecting qubits while maintaining operational interactions.

Keywords:
Information theory and computationQuantum informationQuantum simulationQubitsSuperconducting devices

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Area of Science:

  • Quantum Information Science
  • Quantum Computing Hardware

Background:

  • Quantum computing requires qubits to be isolated when idle but interactive during operations.
  • Insufficient isolation leads to information leakage between qubits, hindering computation.
  • Existing methods lack a way to quantify this specific idle information loss.

Purpose of the Study:

  • To develop a scalable and device-agnostic protocol for quantifying idle information loss in quantum systems.
  • To provide a quantitative foundation for addressing the protection-operation dilemma in quantum computing.

Main Methods:

  • Utilized tools from quantum information theory to design the quantification protocol.
  • Implemented the protocol across over 3500 experiments on IBM's Falcon 5.11 processor series.
  • Conducted experiments over a four-month period (December 2023 - March 2024).

Main Results:

  • Successfully detected significant idle information loss after accounting for other error sources.
  • Demonstrated the protocol's effectiveness and scalability on a real quantum processor.
  • Provided statistically significant evidence of information leakage in idling qubits.

Conclusions:

  • The developed protocol offers a robust method for quantifying idle information loss.
  • This quantitative approach is crucial for resolving the contradictory engineering requirements of quantum platforms.
  • Establishes a foundation for improving qubit protection and overall quantum computation fidelity.