Determination of Tripartite Entanglement: An Approach to One-Step Double Photoionization of Xenon Atom
S. Sen, M. Chakraborty
Quantum entanglement holds the key to a revolution in information processing.This paper investigates the entanglement characteristics of tripartite states of two electronic qubits and an ionic qubit produced by single-step double photoionization (DPI) from a Xeon atom after absorption of a single photon, without observing spin orbit interaction (SOI). DPI is the most natural processes for simultaneously producing two electrons in continuum in a single step. The dimension of the Hilbert space of the qudit depends upon the electronic state of the residual photoion Xe2+. Russel-Salunders coupling (L-S coupling) is applicable in absence of SOI. We consider Peres-Horodecki condition and negativity as an estimation of entanglement. With L-S coupling, all of the properties of a qubit-qudit system can be predicted simply by knowing the spins of the target atom, the residual photoion, the emitted electrons, and the polarisation state of incident photons.
Book Publisher International (a part of SCIENCEDOMAIN International)•Oct 28, 2021•0 citations