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Spin decay and quantum parallelism

John Schliemann·Alexander V. Khaetskii·Daniel Loss
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Abstract

We study the time evolution of a single spin coupled inhomogeneously to a spin environment. Such a system is realized by a single electron spin bound in a semiconductor nanostructure and interacting with surrounding nuclear spins. We find striking dependencies on the type of the initial state of the nuclear spin system. Simple product states show a profoundly different behavior than randomly correlated states whose time evolution provides an illustrative example of quantum parallelism and entanglement in a decoherence phenomenon.

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John Schliemann, Alexander V. Khaetskii, Daniel Loss. 2002-10-10. Spin decay and quantum parallelism. https://doi.org/10.1103/physrevb.66.245303

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