Correlation dynamics of two-parameter qubit-qutrit states under decoherence |
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Authors: | YuanHao and WeiLian-Fu |
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Institution: | [1]Laboratory of Quantum Optoelectronics, School of Physics and Technology, Southwest Jiaotoug University, Chengdu 610031, China [2]State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China |
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Abstract: | We investigate the dynamics of correlations for two-parameter qubit-qutrit states under various local decoherence channels including depahsing, phase-flip, bit- and trit-flip, bit- and trit-phase-flip, and depolarizing channels. We find that, under certain conditions, the classical correlations may not be affected by the noise or decay monotonically. The quantum correlations measured by measurement-induced disturbance (MID) show three types of dynamical behaviors: (i) monotonic decay to zero, (ii) monotonic decay to a nonzero steady value, (iii) increase from zero and then decrease to zero in a monotonic way. Consequently, we find that, differing from the dynamics of entanglement, the present classical and quantum correlations do not reveal sudden death behavior. |
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Keywords: | classical correlations measurement-induced disturbance qubit-qutrit states decoherence |
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