Impact of time-ordered measurements of the two states in a niobium superconducting qubit structure

Simple item page
dc.creatorSegall, K.
dc.creatorCrankshaw, D.
dc.creatorNakada, D.
dc.creatorOrlando, T. P.
dc.creatorLevitov, L. S.
dc.creatorLloyd, S.
dc.creatorMarkovic, N.
dc.creatorValenzuela, S. O.
dc.creatorTinkham, M.
dc.creatorBerggren, K. K.
dc.date2003-02-26
dc.date.accessioned2026-07-07T09:31:41Z
dc.date.available2026-07-07T09:31:41Z
dc.descriptionMeasurements of thermal activation are made in a superconducting, niobium Persistent-Current (PC) qubit structure, which has two stable classical states of equal and opposite circulating current. The magnetization signal is read out by ramping the bias current of a DC SQUID. This ramping causes time-ordered measurements of the two states, where measurement of one state occurs before the other. This time-ordering results in an effective measurement time, which can be used to probe the thermal activation rate between the two states. Fitting the magnetization signal as a function of temperature and ramp time allows one to estimate a quality factor of 10^6 for our devices, a value favorable for the observation of long quantum coherence times at lower temperatures.
dc.description14 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0302553
dc.identifierhttp://arxiv.org/abs/cond-mat/0302553
dc.identifierPhys. Rev. B 67, 220506 (2003)
dc.identifierdoi:10.1103/PhysRevB.67.220506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158549
dc.subjectMesoscale and Nanoscale Physics
dc.subjectSuperconductivity
dc.titleImpact of time-ordered measurements of the two states in a niobium superconducting qubit structure
dc.typetext

Files

Collections

arXiv