Effects of reservoir squeezing on quantum systems and work extraction

2012/11/05 by X. L. Huang, Tao Wang, X. X. Yi · 10 citations
Physics and Astronomy · Computer Science · Chemistry · #Advanced Thermodynamics and Statistical Mechanics #Quantum Information and Cryptography #Quantum Mechanics and Applications #Work (physics) #Extraction (chemistry) #Quantum #Statistical physics #Reservoir computing #Computer science #Physics #Quantum mechanics #Artificial intelligence #Chemistry

paper · doi:10.1103/physreve.86.051105

openalex publication_date 2012/11/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22

Abstract

We establish a quantum Otto engine cycle in which the working substance contacts with squeezed reservoirs during the two quantum isochoric processes. We consider two working substances: (1) a qubit and (2) two coupled qubits. Due to the effects of squeezing, the working substance can be heated to a higher effective temperature, which leads to many interesting features different from the ordinary ones, such as (1) for the qubit as working substance, if we choose the squeezed parameters properly, the positive work can be exported even when T(H) <T(L), where T(H) and T(L) are the temperatures of the hot and cool reservoirs, respectively; (2) the efficiency can be higher than classical Carnot efficiency. These results do not violate the second law of thermodynamics and it can be understood as quantum fuel is more efficient than the classical one.

Citations

• Microscopic work distribution of small systems in quantum isothermal processes and the minimal work principle
• Extracting Work from a Single Heat Bath via Vanishing Quantum Coherence
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Performance of discrete heat engines and heat pumps in finite time
• Entangled quantum heat engines based on two two-spin systems with Dzyaloshinski-Moriya anisotropic antisymmetric interaction

Cited by

• Non-hermitian quantum thermodynamics
• Quantum-enhanced absorption refrigerators
• Photoelectric converters with quantum coherence
• Effects of the reservoir squeezing on the precision of parameter estimation
• Performance bounds of nonadiabatic quantum harmonic Otto engine and refrigerator under a squeezed thermal reservoir
• Nanoscale Heat Engine Beyond the Carnot Limit
• An out-of-equilibrium non-Markovian quantum heat engine
• Lipkin-Meshkov-Glick model in a quantum Otto cycle
• Multilevel quantum Otto heat engines with identical particles
• Effect of coherence of nonthermal reservoirs on heat transport in a microscopic collision model
• Zero-point energy [wikipedia]

Related

• Thermodynamics and Fluctuations in Quantum Heat Engines under Reservoir Squeezing
• Squeezing light to get non-classical work in quantum engines
• Work flux and efficiency at maximum power of a triply squeezed engine
• Finite-time quantum Otto engine with a squeezed thermal bath: Role of quantum coherence and squeezing in the performance and fluctuations
• Asymmetric Quantum Harmonic Otto Engine Under Hot Squeezed Thermal Reservoir