James R. Wootton

TL;DR: In this article, a review summarizes and discusses the various theoretical attempts to find a workable scenario for a passive quantum memory, for which a suitably designed interaction Hamiltonian will naturally protect the coherence of low-lying states from decoherence induced by a thermal environment.

TL;DR: It is shown how all of the Clifford gates can be implemented with the planar code without loss of distance using code deformations, thus offering an attractive alternative to ancilla-mediated schemes to complete the Clifford group with lattice surgery.

TL;DR: A specification for a common interface to backends and a standarized data structure (Qobj --- quantum object) for sending experiments to those backends via Qiskit and OpenPulse, a language for specifying pulse level control of a general quantum device independent of the specific hardware implementation are provided.

TL;DR: An algorithm is presented for error correction in the surface code quantum memory and is shown to correct depolarizing noise up to a threshold error rate of 18.5%, exceeding previous results and coming close to the upper bound.

TL;DR: In this paper, the authors proposed a novel architecture of a large-scale quantum computer based on a realization of long-distance quantum gates between electron spins localized in quantum dots, and showed that distant electron spins in an array of quantum dots can be coupled selectively, with coupling strengths larger than the electron-spin decay and with switching times on the order of nanoseconds.