Avoiding Irreversibility: Engineering Resonant Conversions of Quantum Resources.

Area of Science:

• Quantum information science
• Quantum thermodynamics
• Resource theories

Background:

• Resource theories quantify fundamental resources like entanglement and coherence.
• Asymptotic reversibility in these theories contrasts with limitations in realistic, bounded scenarios.
• Finite-size effects can cause irreversibility, hindering quantum device performance.

Purpose of the Study:

• To identify and explore the phenomenon of resource resonance.
• To investigate methods for mitigating irreversibility caused by finite-size effects.
• To enable small quantum information processors and thermal machines to achieve optimal performance.

Main Methods:

• Analysis of higher-order expansions for resource interconversion trade-offs.
• Numerical optimization of approximate majorization conditions.
• Exploration of resource resonance within entanglement, coherence, and thermodynamics.

Main Results:

• Resource resonance is identified as a key property in resource theories.
• Finite-size effects causing irreversibility can be significantly suppressed.
• Engineering resource interconversion is shown to be effective in mitigating losses.

Conclusions:

• Resource resonance presents a challenge for bounded quantum systems.
• Careful engineering of resource interconversion processes can overcome these limitations.
• The findings are crucial for the development of efficient small-scale quantum technologies.