作者: Oktay K Pashaev , Zeynep N Gurkan
DOI: 10.1088/1367-2630/14/6/063007
关键词: Physics 、 Phase space 、 Quantum entanglement 、 Quantum mechanics 、 Generalised circle 、 Complex plane 、 Qubit 、 Peres–Horodecki criterion 、 Coherent states 、 Antipodal point
摘要: Motivated by the Mobius transformation for symmetric points under generalized circle in complex plane, system of spin coherent states corresponding to antipodal qubit is introduced. In terms these states, we construct maximally entangled complete set two-qubit which limiting cases reduces Bell basis. A specific property our that they never become unentangled any value ψ from plane. Entanglement quantifications are given reduced density matrix and concurrence determinant, it shown basis entangled. Universal one- gates new state calculated. As an application, find Q symbol XY Z model Hamiltonian operator H as average energy function two- three-qubit phase space. It shows regular finite-energy localized structure with local extremum points. The fidelity quantum evolution dimerization double periodic patterns given.