Pure tripartite entanglement types based on spectra of reduced density matrices

International Conference on Quantum Optics and Quantum Information 2013

Molladavoudi, Saeid^1 ; Zainuddin, Hishamuddin^1,2 ; Tim, Chan Kar^2

Laboratory of Computational Sciences and Mathematical Physics, Institute for Mathematical Research, Universiti Putra Malaysia, UPM Serdang, Selangor

43400, Malaysia^1

Department of Physics, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Selangor

43400, Malaysia^2

关键词: Density matrix;    Invariant polynomials;    Local unitary;    Tripartite entanglement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/553/1/012002/pdf
DOI  :  10.1088/1742-6596/553/1/012002

来源: IOP

【 摘 要 】

Given a specific ordered spectra of (shifted) one-qubit reduced density matrices, we discuss that the pure tripartite entanglement for a system consisting of three qubits is determined by only two local unitary invariant polynomials.