Thermal entangled quantum heat engine

被引：25

作者：

He, Xian ^{[1
]}

He, Jizhou ^{[1
]}

Zheng, Jie ^{[1
]}

机构：

[1] Nanchang Univ, Dept Phys, Nanchang 330031, Peoples R China

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2012年 / 391卷 / 24期

关键词：

Nonequilibrium and irreversible thermodynamics; Quantum entangled heat engine; Thermal entanglement; CYCLE WORKING; PERFORMANCE; SYSTEMS; MODEL;

D O I：

10.1016/j.physa.2012.07.050

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on a two-qubit Heisenberg XY model, we construct a four-level entangled quantum heat engine (QHE). It is an interesting quantum Otto cycle where the exchange constant is fixed and only the magnetic field is varied during the adiabatic steps. The expressions for several thermodynamic quantities such as the heat transferred, the work and the efficiency are derived. Moreover, the influence of the entanglement on the thermodynamic quantities is investigated numerically. Several interesting features of the variation of the heat transferred, the work and the efficiency with the concurrences of the thermal entanglement of different thermal equilibrium states are obtained. Finally, we discussed the maximum efficiency of the QHE. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：6594 / 6600

页数：7

共 35 条

[1] Work extraction in the spin-boson model -: art. no. 046106 [J].

Allahverdyan, AE ;

Gracià, RS ;

Nieuwenhuizen, TM .

PHYSICAL REVIEW E, 2005, 71 (04)

[2] Work extremum principle: Structure and function of quantum heat engines [J].

Allahverdyan, Armen E. ;

Johal, Ramandeep S. ;

Mahler, Guenter .

PHYSICAL REVIEW E, 2008, 77 (04)

[3] Mechanical equivalent of quantum heat engines [J].

Arnaud, Jacques ;

Chusseau, Laurent ;

Philippe, Fabrice .

PHYSICAL REVIEW E, 2008, 77 (06)

[4] Natural thermal and magnetic entanglement in the 1D Heisenberg model [J].

Arnesen, MC ;

Bose, S ;

Vedral, V .

PHYSICAL REVIEW LETTERS, 2001, 87 (01)

[5] Quantum mechanical Carnot engine [J].

Bender, CM ;

Brody, DC ;

Meister, BK .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2000, 33 (24) :4427-4436

[6] Characteristics of the limit cycle of a reciprocating quantum heat engine [J].

Feldmann, Tova ;

Kosloff, Ronnie .

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2004, 70 (4 2) :046110-1

[7] Quantum four-stroke heat engine: Thermodynamic observables in a model with intrinsic friction [J].

Feldmann, T ;

Kosloff, R .

PHYSICAL REVIEW E, 2003, 68 (01) :18

[8] Performance of discrete heat engines and heat pumps in finite time [J].

Feldmann, T ;

Kosloff, R .

PHYSICAL REVIEW E, 2000, 61 (05) :4774-4790

[9] ON THE CLASSICAL LIMIT OF QUANTUM THERMODYNAMICS IN FINITE-TIME [J].

GEVA, E ;

KOSLOFF, R .

JOURNAL OF CHEMICAL PHYSICS, 1992, 97 (06) :4398-4412

[10] A QUANTUM-MECHANICAL HEAT ENGINE OPERATING IN FINITE-TIME - A MODEL CONSISTING OF SPIN-1/2 SYSTEMS AS THE WORKING FLUID [J].

GEVA, E ;

KOSLOFF, R .

JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (04) :3054-3067

← 1 2 3 4 →