The Performance Analysis Of The Quantum Entangled Thermodynamic Cycle

With the development and maturity of quantum mechanics, quantum thermodynamic cycle has become a focus of the thermodynamic study. And the quantum thermodynamic cycle also showed a lot of special properties that are different from the classical thermodynamic cycle. Quantum entanglement is a quantum phenomenon which plays an important role in quantum communication and information processing. The introduction of the quantum entanglement to the quantum entanglement of thermodynamic cycle will draw a great number of interesting conclusions.In chapterⅠ, the current situation of the quantum thermodynamics cycle and quantum entangled thermodynamics cycle are discussed briefly.In chapterⅡ, we used a two-qubit one-dimensional isotropic Heisenberg XX model with a constant external magnetic field as working substance to construct quantum entangled heat engine and quantum entangled refrigerator. Then we analyze the relationship between the performance of quantum thermodynamics cycle and quantum entanglement.In chapterⅢ, based on a three-qubit one-dimensional isotropic Heisenberg XX model with a constant external magnetic field, we construct quantum entangled heat engine and quantum entangled refrigerator. Then we analyze the relationship between the performance of quantum thermodynamics cycle and quantum entanglement.In chapterⅣ, based on the previous of quantum heat engine use a two-qubit one-dimensional isotropic Heisenberg XXX model with a constant external magnetic field as working substance, we construct quantum entangled refrigerator. Then we analyze the relationship between the performance of quantum refrigerator and quantum entanglement.In chapterⅤ, we will compare the performance of quantum thermodynamics cycle using the three working substances in the different external magnetic field and find the three-qubit model not only outstanding in the quantum information field but also in the quantum thermodynamics cycle.In chapterⅥ, we give the conclusions of the performance of quantum thermodynamics cycle using the three working substances mentioned above and prospect for the future work.