The key to a revolution in information processing is quantum entanglement. Without seeing spin orbit contact, this article explores the entanglement characteristics of tripartite states of two electronic qubits and an ionic qubit created by single-step double photoionization (DPI) from a Xeon atom following absorption of a single photon (SOI). DPI is the most natural method for creating two electrons in a continuous state in a single step. The electronic state of the leftover photoion Xe2+ determines the dimension of the qudit’s Hilbert space. In the absence of SOI, the Russell-Salunders coupling (L-S coupling) can be used. As an estimation of entanglement, we use the Peres-Horodecki condition and negative. All of the parameters of a qubit-qudit system may be predicted using L-S coupling if the target atom’s spins, the residual photoion, the emitted electrons, and the polarisation state of incident photons are known.
Department of Physics, Triveni Devi Bhalotia College, Raniganj- 713347, India.
Department of Physics, Asansol Girls’ College, Asansol -713304, India.