The π-tangle is used to study the behavior of entanglement of a nonmaximal tripartite state of both Dirac and scalar fields in accelerated frame. For Dirac fields, the degree of degradation with acceleration of both one-tangle of accelerated observer and π-tangle, for the same initial entanglement, is different by just interchanging the values of probability amplitudes. A fraction of both one-tangles and the π-tangle always survives for any choice of acceleration and the degree of initial entanglement. For scalar field, the one-tangle of accelerated observer depends on the choice of values of probability amplitudes and it vanishes in the range of infinite acceleration, whereas for π-tangle this is not always true. The dependence of π-tangle on probability amplitudes varies with acceleration. In the lower range of acceleration, its behavior changes by switching between the values of probability amplitudes and for larger values of acceleration this dependence on probability amplitudes vanishes. Interestingly, unlike bipartite entanglement, the degradation of π-tangle against acceleration in the case of scalar fields is slower than for Dirac fields.
Dynamics and recovery of genuine multipartite Einstein-Podolsky-Rosen steering and genuine multipartite nonlocality for a dissipative Dirac system via Unruh effect
Entanglement transference and non-inertial quantum reference frames
University of Waterloo(滑铁卢大学);Institute for Quantum Computing, University of Waterloo(滑铁卢大学量子计算研究所);Waterloo Centre for Astrophysics, University of Waterloo(滑铁卢大学天体物理中心);Perimeter Institute for Theoretical Physics(基础物理研究所)
Relativistic quantum teleportation protected by the anti-Unruh effect
Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz(阿瓦士沙希德·恰姆兰大学理学院物理系);Center for Research on Laser and Plasma, Shahid Chamran University of Ahvaz(阿瓦士沙希德·恰姆兰大学激光与等离子体研究中心)
Entanglement degradation in regular and singular spacetimes
School of Science and Technology, University of Camerino(卡梅里诺大学理学院);Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Perugia(意大利国家核物理研究所佩鲁伽分部);Department of Nanoscale Science and Engineering, University at Albany SUNY(纽约州立大学奥尔巴尼分校纳米科学与工程系);INAF - Osservatorio Astronomico di Brera(意大利国家天体物理研究所布雷拉天文台);Al-Farabi Kazakh National University(阿尔法拉比哈萨克国立大学)