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Energetics and quantumness of Fano coherence generation
Ludovica Donati1,2,3, Francesco Saverio Cataliotti4,5,6, Stefano Gherardini7,8
1Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Largo Enrico Fermi 6, 50125, Florence, Italy.
Scientific Reports
|August 29, 2024
Summary
This study demonstrates genuinely quantum traits in Fano coherences within a V-type three-level system. Researchers identified conditions for excess energy generation, highlighting quantum properties in energy transformations.
Area of Science:
- Quantum mechanics
- Quantum optics
- Quantum thermodynamics
Background:
- Fano coherences arise from interactions between discrete quantum systems and continuum modes.
- Understanding the quantum nature of Fano coherences is crucial for quantum information and thermodynamics.
Purpose of the Study:
- To certify genuinely quantum traits in Fano coherences using a V-type three-level system.
- To identify conditions for the generation of excess energy through Fano coherences.
- To investigate the thermodynamic efficiency of the process.
Main Methods:
- Utilizing a V-type three-level quantum system.
- Analyzing the Kirkwood-Dirac quasiprobability distribution to detect non-classical features.
- Investigating nonequilibrium regimes and energy transformations.
Main Results:
- Demonstrated conditions where Fano coherences exhibit genuinely quantum characteristics.
- Showcased the loss of positivity in the Kirkwood-Dirac quasiprobability distribution.
- Identified nonequilibrium regimes yielding excess energy when initial states are superpositions.
Conclusions:
- Fano coherences possess non-classical traits verifiable through quasiprobability distributions.
- Quantum coherences can drive energy generation in non-equilibrium quantum systems.
- The study provides insights into quantum thermodynamics and the efficiency of quantum energy transformations.
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