Quantum dynamics of electron–nuclei coupled system in quantum dots

We have investigated the dynamics of the electron–nuclei coupled system in quantum dots. The bunching of results of the electron spin measurements and the revival in the conditional probabilities are salient features of the nuclear spin memory. The underlying mechanism is the squeezing of the nuclear spin state and the correlations between the successive electron spin measurements. A realization of the proposals for electron spins on single and double quantum dots is discussed.