TY - JOUR
T1 - Entangled quantum Otto heat engines based on two-spin systems with the Dzyaloshinski–Moriya interaction
AU - Zhao, Li Mei
AU - Zhang, Guo Feng
N1 - Publisher Copyright:
© 2017, Springer Science+Business Media, LLC.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - We construct an entangled quantum Otto engine based on spin-1/2 systems undergoing Dzyaloshinski–Moriya (DM) interaction within a varying magnetic field. We investigate the influence of the DM interaction on basic thermodynamic quantities, including heat transfer, work done, and efficiency and find that the DM interaction importantly influences the engine’s thermodynamics. We obtain an expression for engine efficiency, finding it to yield the same efficiency for antiferromagnetic and ferromagnetic coupling. A new upper bound, nontrivially consistent with the second law of thermodynamics, is derived for engine efficiency in the case of non-zero DM interaction.
AB - We construct an entangled quantum Otto engine based on spin-1/2 systems undergoing Dzyaloshinski–Moriya (DM) interaction within a varying magnetic field. We investigate the influence of the DM interaction on basic thermodynamic quantities, including heat transfer, work done, and efficiency and find that the DM interaction importantly influences the engine’s thermodynamics. We obtain an expression for engine efficiency, finding it to yield the same efficiency for antiferromagnetic and ferromagnetic coupling. A new upper bound, nontrivially consistent with the second law of thermodynamics, is derived for engine efficiency in the case of non-zero DM interaction.
KW - Dzyaloshinski–Moriya interaction (DM)
KW - Quantum heat engine
KW - Spin-1/2 systems
UR - https://www.scopus.com/pages/publications/85026234603
U2 - 10.1007/s11128-017-1665-0
DO - 10.1007/s11128-017-1665-0
M3 - 文章
AN - SCOPUS:85026234603
SN - 1570-0755
VL - 16
JO - Quantum Information Processing
JF - Quantum Information Processing
IS - 9
M1 - 216
ER -