The retrieval of lost entanglement for relatively accelerated fermionic observers of a tripartite system by a partial measurement technique has been investigated.From the prospective of the negativities of one-tangles...The retrieval of lost entanglement for relatively accelerated fermionic observers of a tripartite system by a partial measurement technique has been investigated.From the prospective of the negativities of one-tangles and theπ-tangle,we show that the degraded entanglement in noninertial frames with single-mode approximation is completely retrieved by an optimal strength of the partial measurement or the partial measurement reversal.In addition,we find that the optimal one-tangle with respect to inertial and noninertial observers turns out to be the same for an optimal strength of partial measurements at q0=0 when two accelerated observers move with infinite acceleration.展开更多
基金supported by the INTERWEAVE project,Erasmus Mundus Action 2 Strand 1 Lot 11,EACEA/42/11 Grant Agreement 2013-2538/001-001 EM Action 2 Partnership Asia-Europe,Fundacao da Ciência e Tecnologia and COMPETE 2020 program in FEDER component(EU),through the projects POCI-01-0145-FEDER-028887 and UID/FIS/04650/2013the support from the Fundacao da Ciência e Tecnologia(FCT)through a Doctoral Programme in the Physics and Mathematics of Information and the associated scholarship PD/BD/113651/2015 and through the grant UID/CTM/04540/2013+1 种基金the support of SQIG–Security and Quantum Information Group,under the Fundacao para a Ciência e a Tecnologia(FCT)project UID/EEA/50008/2019European funds,namely H2020 project SPARTA。
文摘The retrieval of lost entanglement for relatively accelerated fermionic observers of a tripartite system by a partial measurement technique has been investigated.From the prospective of the negativities of one-tangles and theπ-tangle,we show that the degraded entanglement in noninertial frames with single-mode approximation is completely retrieved by an optimal strength of the partial measurement or the partial measurement reversal.In addition,we find that the optimal one-tangle with respect to inertial and noninertial observers turns out to be the same for an optimal strength of partial measurements at q0=0 when two accelerated observers move with infinite acceleration.
