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More bang for your buck: super-adiabatic quantum engines
A del Campo1, J Goold2, M Paternostro3
11] Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA [2] Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Scientific Reports
|August 29, 2014
Summary
Engineers can now design maximally efficient quantum engines that operate at finite power and zero friction. This is achieved by using shortcuts to adiabaticity, overcoming limitations of traditional thermodynamic cycles.
Area of Science:
- Quantum thermodynamics
- Statistical mechanics
- Engine cycle analysis
Background:
- Realistic engines are irreversible due to friction at short cycle times, limiting efficiency and power.
- Designing maximally efficient engines operating at maximum power is a key technological goal.
Purpose of the Study:
- To engineer a quantum engine cycle that operates at finite power and zero friction.
- To overcome the limitations imposed by the quasi-static assumption in traditional engine design.
Main Methods:
- Utilizing shortcuts to adiabaticity in a quantum engine cycle.
- Applying these methods to a quantum Otto cycle using a harmonic oscillator.
Main Results:
- Demonstrated a thermodynamic cycle operating at finite power.
- Achieved zero friction in the engineered quantum engine cycle.
- Showcased the practical application using a harmonic oscillator model.
Conclusions:
- Shortcuts to adiabaticity offer a viable pathway to designing highly efficient, finite-power quantum engines.
- This approach overcomes intrinsic irreversibility and friction inherent in classical engine designs.
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