Quantum Fisher Information of N Particles in the Superposition of W and GHZ States

Ozaydin, FatihAltintas, Azmi AliBugu, SinanYesilyurt, Can2024-05-252024-05-252013220020-774810.1007/s10773-013-1588-12-s2.0-84881025524https://doi.org/10.1007/s10773-013-1588-1https://hdl.handle.net/20.500.14517/846Yesilyurt, Can/0000-0003-4949-3523; Altintas, Azmi Ali/0000-0003-2383-4705;We investigate the quantum Fisher information of a multipartite entangled state of N particles in a superposition of W and GHZ states. We find that the mean quantum Fisher information per particle (RMQFI) decreases with respect to the number of the particles and the peak is observed between 0.6 and 0.8 values of the superposition coefficient of W state. We present the behavior of RMQFI for N from 2 to 10 and discuss some interesting results.eninfo:eu-repo/semantics/closedAccessQuantum Fisher informationN qubit stateW StateGHZ StateQuantum Fisher Information of N Particles in the Superposition of W and GHZ StatesArticleQ3Q252929772980WOS:000322579400001