All Optical Implementation of Multi-Spin Entanglement in a Semiconductor Quantum Well
J. Bao, A. V. Bragas, J. K. Furdyna, R. Merlin
Abstract
We use ultrafast optical pulses and coherent techniques to create spin entangled states of non-interacting electrons bound to donors (at least three) and at least two Mn2+ ions in a CdTe quantum well. Our method, relying on the exchange interaction between localized excitons and paramagnetic impurities, can in principle be applied to entangle a large number of spins.
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