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Related Experiment Video

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Simulating electron transfer on noisy quantum computers.

Marvin Gajewski1,2, Alejandro D Somoza3,4, Gary Schmiedinghoff5

  • 1Institute of Engineering Thermodynamics, German Aerospace Center (DLR), Ulm, Germany.

Nature Communications
|May 28, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Quantum computers can now simulate complex molecular vibrations and electron transfer. This new method uses qubit dissipation to model vibrational relaxation, enabling unprecedented simulations of chemical dynamics on near-term quantum hardware.

Related Experiment Videos

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
05:30

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

Area of Science:

  • Quantum Computing
  • Computational Chemistry
  • Condensed Matter Physics

Background:

  • Simulating open quantum systems with electronic-vibrational (vibronic) coherence is challenging for current quantum hardware.
  • Existing methods struggle with non-equilibrium dynamics and long-lived vibronic coherence in extended electronic networks.

Purpose of the Study:

  • To develop a framework for digital-analog simulation of open quantum systems with linear-vibronic coupling (LVC).
  • To leverage intrinsic qubit dissipation as a resource for emulating vibrational relaxation.
  • To establish a benchmark for simulating long-lived entangled states on Noisy Intermediate-Scale Quantum (NISQ) computers.

Main Methods:

  • Digital-analog quantum simulation framework for open quantum systems.
  • Utilizing intrinsic qubit dissipation to model vibrational relaxation.
  • Employing model-specific error mitigation for noise filtering.
  • Simulating a one-dimensional donor-acceptor chain with up to 10 electronic sites.

    • Main Results:

    • Successfully resolved vibronic transfer spectra of a donor-acceptor chain on IBM superconducting processors.
    • Reproduced non-Markovian dynamics characteristic of the simulated system.
    • Achieved unprecedented scale for chemical dynamics simulations on quantum computers (10 electronic sites).

    Conclusions:

    • The proposed framework enables accurate simulation of complex vibronic systems on NISQ devices.
    • The approach effectively uses qubit dissipation and error mitigation for open quantum system simulation.
    • This work provides a scalable and portable benchmark for quantum chemical dynamics on current quantum hardware.