719 research outputs found
Dr. E.K. Wright
No full textPhotograph - The first County Playdowns curling event, Athabasca, Alberta. Dr. E.K. Wright with the trophy. Feb 27, 196
Defining the semiclassical limit of the quantum Rabi Hamiltonian
Get PDFThe crossover from quantum to semiclassical behavior in the seminal Rabi
model of light-matter interaction still, surprisingly, lacks a complete and
rigorous understanding. A formalism for deriving the semiclassical model
directly from the quantum Hamiltonian is developed here. Working in a displaced
Fock-state basis , the semiclassical limit is
obtained by taking and the coupling to zero.
This resolves the discrepancy between coherent-state dynamics and semiclassical
Rabi oscillations in both standard and ultrastrong coupling/driving regimes.
Furthermore, it provides a framework for studying the quantum-to-classical
transition, with potential applications in quantum technologies.Comment: 7 pages, 1 figure; 7 pages Supplemental Material; v3: change of
author name from E.K. Irish to E.K. Twyeffort Iris
Sir Henry Lee (1533-1611) : the life and career of an Elizabethan courtier gentleman
No full textDespite a long and active career as Elizabeth I's tournament champion, instigator of the Accession Day tournaments, Steward of the Queen's manor at Woodstock, Master of the Armoury and Knight of the Garter, Lee remained a gentleman, howbeit one of the elite courtier gentlemen who served Elizabeth I. The only studies of Lee's life are the brief monograph produced by his descendant, Viscount Dillon of Ditchley in 1906, and E.K. Chambers' Sir Henry Lee: an Elizabethan Portrait (1936). Lee's name frequently appears in major works on Elizabethan England, yet despite its dated nature and factual errors, Chambers' work remains the sole secondary source of reference for Lee's life. A new study of Lee's long life offers an opportunity to examine the values, hopes, expectations and frustrations of an elite Elizabethan gentleman, with others of his social class. Sir Henry Lee also had talents that singled him out from his counterparts. His contemporary fame was based upon his performance in the tournaments, an activity that was becoming outmoded as training for war, but still, in the eyes of the public, represented the best of chivalric virtues. This study will attempt to analyse how tournaments developed in late Elizabethan England, the uses to which they could be put, and how Lee saw the role of chivalric values they embodied. This study seeks to describe and appraise Lee's life and career in its entirety, using a wide range of primary sources, many not available to Chambers. These sources will be used in the context of recent scholarship on Elizabeth's England as well as what remains of Lee's material culture, in an attempt to understand the life of an understudied and underrated Elizabethan gentleman.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
An optimized scheme for detecting magneto-optic effects in ultrathin films with Sagnac interferometry
No full text© 2022 Author(s).Sagnac interferometry is advantageous in measuring time-reversal-symmetry breaking effects in ferromagnetic and antiferromagnetic materials as it suppresses time-reversal symmetric birefringent effects that are ubiquitous and often overwhelming in optical detection systems. When its sensitivity is limited only by the amplifier noise in the photo-detector, one needs to optimize the optical power that returns to the detector. We demonstrate an experimental scheme that maximizes the returning optical power in a Sagnac interferometry when detecting the magneto-optic effect in ultrathin films. In this scheme, the optical beam bearing the Faraday effect on a thin film is reflected at a second surface coated with a highly reflective gold film. The gold film increases the returned optical power by a factor of 4-5. For a normal-incidence Sagnac interferometer, this scheme yields an increase in the signal-to-noise ratio by the same factor. For an oblique-incidence Sagnac interferometer, this scheme should yield an increase in the signal-to-noise ratio by a factor of 20-25. For illustration, this scheme is used to measure magnetization curves and Kerr rotation images of 4.5-unit-cell thick SrRuO3(001) grown on SrTiO3(001).11Nsciescopu
Chuck Nanook
No full textPhotograph - Children playing in the sled belong to Chuck Nanook who was travelling from Whitehorse to Winnipeg and made a stop in Athabasca, Alberta on January 17, 1946. Dr. E.K. Wright's house is visible in the backgroun
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