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Updated: Jan 29, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Manipulating quantum spins by spin-polarized current: an approach based upon [Formula: see text]-symmetric quantum
Aleix Bou Comas1, Eugene M Chudnovsky2, Javier Tejada1
1Facultat de Física, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain.
None:
We propose a quantum processor based upon single-molecule magnets and spin transfer torque described by [Formula: see text]-symmetric quantum mechanics. In recent years [Formula: see text]-symmetric Hamiltonians have been used to obtain stability thresholds of various systems out of equilibrium. One such problem is the magnetization reversal due to the spin transfer torque generated by a spin-polarized current. So far the studies of this problem have mostly focused on a classical limit of a large spin. In this work we are discussing spin tunneling and quantum dynamics of a small spin induced by a spin polarized current within a [Formula: see text]-symmetric theory. This description can be used for manipulating spin qubits by electric currents.
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