Quantum speed limits for Bell-diagonal states
Han Weia) , Jiang Ke-Xiaa), b) , Zhang Ying-Jie†a) 
, Xia Yun-Jiea)
, Xia Yun-Jie
Quantum speed limits for Bell-diagonal states |
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Han Wei
, Xia Yun-Jie |
| The QSLT (solid black line), classical correlation (CC, dashed red line), and quantum correlation (QD, dotted blue line) under local phase-flip channels as a function of the initial time parameter γτ . We choose the class of initial Bell-diagonal states considered in Ref. [ 37 ], in which c 1 = ±1, c 2 = ∓ c 3, here c 1 = 1, c 2 = −0.8, and c 3 = 0.8, and the driving time τ D = 1. On this initial condition, the behavior of sudden transition from classical correlation decoherence to quantum correlation decoherence occurs at τ = τ c. The sudden change of the decay of QSLT has been marked in this figure. The classical correlation and quantum discord can be obtained by the method in Ref. [ 39 ]. |
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