Imaging quantum chemistry in action with quantum attomicroscopy

Area of Science:

• Quantum Chemistry and Biology
• Ultrafast Dynamics
• Biomolecular Reactions

Background:

• Understanding quantum electron and nuclear motion is key to biomolecular reactions.
• Ultrafast charge migration in DNA is linked to genome stability and signaling.
• Real-time observation of these dynamics in DNA remains a significant challenge.

Purpose of the Study:

• To theoretically investigate attosecond charge dynamics and electronic coherences in DNA base pairs.
• To propose a novel conceptual instrument, the quantum attomicroscope (Q-attomicroscope), for observing these phenomena.
• To bridge theoretical insights with experimental capabilities for laser-mediated DNA manipulation.

Main Methods:

• High-level ab initio simulations were employed to model quantum electron and nuclear motions.
• Analysis focused on revealing attosecond charge dynamics and electronic coherences.
• A conceptual design for the quantum attomicroscope (Q-attomicroscope) was developed.

Main Results:

• Attosecond charge dynamics and electronic coherences within canonical DNA base pairs were revealed.
• The study demonstrates the feasibility of simulating these ultrafast quantum processes.
• The proposed Q-attomicroscope concept offers unprecedented temporal and spatial resolution.

Conclusions:

• This work provides crucial theoretical insights into DNA's quantum behavior.
• The proposed Q-attomicroscope paves the way for experimental observation of ultrafast charge migration.
• Findings have transformative implications for understanding chemical reactivity and advancing personalized medicine through DNA manipulation.