Abstract
In this paper, we investigate the behavior of the quantum coherence for bipartite fermionic systems in noninertial frames beyond the single-mode approximation. It is shown a redistribution of coherence between particle and antiparticle modes, and the behavior in terms of coherence for fermionic systems is convergent in the infinite acceleration limit. We demonstrate that the physical accessible coherence is not always destroyed with the increase in acceleration, which is different from the features of entanglement in the accelerated frame. Besides, we obtain a quantitative relationship about the redistribution of coherence via the \(l_1\)-norm measure. It is worth mentioning that a rotation operation can change the coherence values, since the amount of coherence is related to the selection of reference basis.
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Acknowledgements
This work was supported by the National Science Foundation of China (Grant Nos. 11575001 and 11605028), the Natural Science Research Project of Education Department of Anhui Province of China under Grant No. KJ2018A0343, the Open Foundation for CAS Key Laboratory of Quantum Information under Grant Nos. KQI201702 and KQI201804, the Key Program of Excellent Youth Talent Project of the Education Department of Anhui Province of China under Grant No. gxyqZD2018065, the Key Program of Excellent Youth Talent Project of Fuyang Normal University under Grant No. rcxm201804, the Research Center for Quantum Information Technology of Fuyang Normal University under Grant No. kytd201706, and also the Doctoral Foundation of Fuyang Normal University under Grant No. FYNU1602.
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Ding, ZY., Liu, CC., Sun, WY. et al. Quantum coherence of fermionic systems in noninertial frames beyond the single-mode approximation. Quantum Inf Process 17, 279 (2018). https://doi.org/10.1007/s11128-018-2043-2
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DOI: https://doi.org/10.1007/s11128-018-2043-2