Probabilistic teleportation of a quantum dot spin qubit
Abstract
Electron spin s in semiconductor quantum dot s have been intensively studied for implementing quantum computation and high fidelity single and two qubit operation s have recently been achieved . Quantum teleportation is a three qubit protocol exploiting quantum entanglement and it serv es as a n essential primitive for more sophisticated quantum algorithm s Here, we demonstrate a scheme for quantum teleportation based on direct Bell measurement for a single electron spin qubit in a triple quantum dot utilizing the Pauli exclusion principle to create and detect maximally entangled state s . T he single spin polarization is teleported from the input qubit to the output qubit with a fidelity of 0.9 1 We find this fidelity is primarily limited by singlet triplet mixing which can be improved by optimizing the device parameters Our results may be extended to quantum algorithms with a larger number of se miconductor spin qubit s
Cite
@article{arxiv.2011.04881,
title = {Probabilistic teleportation of a quantum dot spin qubit},
author = {Y. Kojima and T. Nakajima and A. Noiri and J. Yoneda and T. Otsuka and K. Takeda and S. Li and S. D. Bartlett and A. Ludwig and A. D. Wieck and S. Tarucha},
journal= {arXiv preprint arXiv:2011.04881},
year = {2021}
}