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Work Extraction Processes from Noisy Quantum Batteries: The Role of Nonlocal Resources
Salvatore Tirone1, Raffaele Salvia2, Stefano Chessa2,3
1Scuola Normale Superiore, I-56126 Pisa, Italy.
Physical Review Letters
|August 25, 2023
Summary
Nonlocal operations, not entangled states, enhance quantum battery work extraction from noise. Nonlocal recovery operations improve work output, even with separable states, unlike entangled states with local recovery.
Area of Science:
- Quantum Information Science
- Quantum Thermodynamics
- Quantum Computing
Background:
- Environmental noise degrades performance in quantum systems.
- Quantum batteries offer potential for efficient energy storage.
- Work extraction from quantum batteries is susceptible to noise.
Purpose of the Study:
- To investigate the asymmetric effects of nonlocal operations and states on quantum battery work extraction.
- To determine if nonlocal operations or states are more effective in mitigating noise.
- To analyze the impact of entanglement on noise mitigation strategies.
Main Methods:
- Modeling quantum battery systems subjected to environmental noise.
- Analyzing work extraction protocols using both local and nonlocal operations.
- Comparing performance with separable and entangled input states.
- Evaluating the role of recovery operations in mitigating noise effects.
Main Results:
- Nonlocal recovery operations can significantly increase extractable work, even with non-entangled states.
- Entangled input states combined with local recovery operations do not generally improve performance.
- An asymmetry exists between the benefits of nonlocal operations and nonlocal states.
Conclusions:
- Nonlocal recovery operations represent a promising strategy for robust quantum battery performance.
- The use of entangled states is less effective for noise mitigation compared to nonlocal operations.
- Optimizing quantum battery efficiency requires careful consideration of operational strategies and state properties.
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