Stabilization of Qubit Relaxation Rates by Frequency Modulation

Autor:	Matityahu, Shlomi, Shnirman, Alexander, Schechter, Moshe
Rok vydání:	2021
Předmět:	Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Applied 16, 044036 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevApplied.16.044036
Popis:	Temporal, spectral, and sample-to-sample fluctuations in coherence properties of qubits form an outstanding challenge for the development of upscaled fault-tolerant quantum computers. A ubiquitous source for these fluctuations in superconducting qubits is a set of atomic-scale defects with a two-level structure. Here we propose a way to mitigate these fluctuations and stabilize the qubit performance. We show that frequency modulation of a qubit or, alternatively, of the two-level defects, leads to averaging of the qubit relaxation rate over a wide interval of frequencies. Comment: Main text has 5 pages and 2 figures. Supplemental material has 7 pages and 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2104.03695 Zobrazit plný text záznamu View this record from Arxiv