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Fermionic One-Body Entanglement as a Thermodynamic Resource
Krzysztof Ptaszyński1,2, Massimiliano Esposito1
1Complex Systems and Statistical Mechanics, Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg, Luxembourg.
Physical Review Letters
|April 28, 2023
Summary
Fermionic entanglement, though debated, is a useful quantum resource. It enables tasks in open-system thermodynamics impossible for separable states, clarifying its operational meaning.
Area of Science:
- Quantum Information Science
- Quantum Thermodynamics
- Quantum Optics
Background:
- Debate exists on whether fermionic mode superposition is truly entangled.
- Parity superselection rules limit local access to fermionic entanglement, preventing Bell's inequality tests.
Purpose of the Study:
- To investigate if fermionic entanglement can be a resource in quantum thermodynamics.
- To explore the operational meaning of fermionic entanglement in open systems.
Main Methods:
- Analysis of two-mode fermionic states.
- Investigation within the framework of open-system thermodynamics.
Main Results:
- Fermionic entanglement serves as a genuine quantum resource in thermodynamic processes.
- This entanglement enables tasks unattainable by separable fermionic states.
Conclusions:
- Quantum thermodynamics clarifies the nature and operational utility of fermionic entanglement.
- Entanglement in fermionic systems has practical applications beyond traditional Bell tests.
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