State Initialization of a Hot Spin Qubit in a Double Quantum Dot by Measurement-Based Quantum Feedback Control

Autor:	A. Aarab, R. Azouit, V. Reiher, Y. Bérubé-Lauzière
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	Quantum Physics Computer Science::Emerging Technologies Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences Hardware_ARITHMETICANDLOGICSTRUCTURES Quantum Physics (quant-ph)
Popis:	A measurement-based quantum feedback protocol is developed for spin state initialization in a gate-defined double quantum dot spin qubit coupled to a superconducting resonator. The protocol improves qubit state initialization as it is able to robustly prepare the spin in shorter time and reach a higher fidelity, which can be pre-set. Being able to pre-set the fidelity aimed at is a highly desired feature enabling qubit initialization to be more deterministic. The protocol developed herein is also effective at high temperatures, which is critical for the current efforts towards scaling up the number of qubits in quantum computers. 11 pages, 8 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9395aae940c4bb8f6e4e8b437f31f0f6 http://arxiv.org/abs/2204.02565 Zobrazit plný text záznamu