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Updated: Jan 18, 2026
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Variational Quantum Simulation of Open Quantum Dynamics via Non-Markovian Stochastic Schrödinger Equation with
1School of Materials, Sun Yat-sen University, Shenzhen, Guangdong 518107, China.
Journal of Chemical Theory and Computation
|September 8, 2025
Summary
This study introduces a hybrid quantum-classical algorithm for simulating complex quantum dynamics, reducing resource needs for non-Markovian environments. The method accurately models dissipative systems, advancing quantum simulation capabilities.
Area of Science:
- Quantum Physics
- Computational Chemistry
- Quantum Information Science
Background:
- Simulating non-Markovian open quantum dynamics is essential for understanding complex quantum systems.
- Standard quantum hardware faces challenges due to non-Hermitian dynamics and limited resources.
- Dissipative dynamics in quantum systems coupled to non-Markovian environments require advanced simulation techniques.
Purpose of the Study:
- To propose a novel hybrid quantum-classical algorithm for simulating non-Markovian open quantum dynamics.
- To address the challenges posed by non-Hermitian evolution and resource constraints in quantum hardware.
- To develop a method for accurately capturing dissipative dynamics in complex quantum systems.
Main Methods:
- Formulation of a non-Markovian Stochastic Schrödinger equation with complex frequency modes (cNMSSE).
- Characterization of non-Markovianity through mode excitation within the cNMSSE.
- Application of variational quantum simulation to model nonunitary evolution and reduce qubit requirements.
Main Results:
- Demonstrated a significant reduction in qubit requirements for simulating non-Markovian dynamics.
- Successfully captured nonunitary evolution using variational quantum simulation within the cNMSSE framework.
- Investigated dissipative dynamics in the spin-boson model and excitation energy transfer in dimer and FMO complexes.
Conclusions:
- The proposed hybrid quantum-classical algorithm offers an efficient approach for simulating non-Markovian open quantum dynamics.
- This method effectively handles dissipative dynamics and reduces computational resource demands.
- The approach is validated through simulations of key quantum systems like the spin-boson model and FMO complex.
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