Quantum simulation of charge and exciton transfer in multi-mode models using engineered reservoirs

Area of Science:

• Quantum simulation
• Quantum chemistry
• Condensed matter physics

Background:

• Open-system quantum dynamics are crucial for understanding molecular processes.
• Simulating non-perturbative regimes requires precise control over interactions.

Purpose of the Study:

• To demonstrate an open-system quantum simulation of charge and exciton transfer.
• To investigate the role of vibrational modes and engineered environments in energy transfer.

Main Methods:

• Utilized trapped ions to simulate a multi-mode linear vibronic coupling model.
• Employed spin-phonon interactions and reservoir engineering to control dissipation.
• Tuned the system between charge transfer and exciton transfer regimes.

Main Results:

• Observed that degenerate vibrational modes enhance transfer rates at large energy gaps.
• Found that non-degenerate modes reduce energy-gap dependence by activating new pathways.
• Demonstrated that additional vibrations reshape non-perturbative excitation transfer.

Conclusions:

• Trapped ions provide a scalable and hardware-efficient platform for simulating vibronic processes.
• Engineered environments and vibrational modes significantly impact energy transfer dynamics.
• This approach offers new insights into non-equilibrium quantum dynamics.