<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cardea, I.</style></author><author><style face="normal" font="default" size="100%">Grassani, D.</style></author><author><style face="normal" font="default" size="100%">Upham, J.</style></author><author><style face="normal" font="default" size="100%">Schulz, S.A.</style></author><author><style face="normal" font="default" size="100%">K. L. Tsakmakidis</style></author><author><style face="normal" font="default" size="100%">Brès, C.-S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Unconventional time-bandwidth performance of resonant cavities with nonreciprocal coupling</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review A</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2021</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100136237&amp;doi=10.1103%2fPhysRevA.103.013716&amp;partnerID=40&amp;md5=a9b02206abaed13e400ec8a613522055</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1</style></number><volume><style face="normal" font="default" size="100%">103</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The time-bandwidth limit is a mathematical tenet that affects all reciprocal resonators, stating that the product of the spectral bandwidth that can couple into a resonant system and its characteristic energy decay time is always equal to 1. Here, we develop an analytical and numerical model to show that introducing nonreciprocal coupling to a generalized resonator changes the power balance between the reflected and intracavity fields, which consequently overcomes the time-bandwidth limit of the resonant system. By performing a full evaluation of the time-bandwidth product (TBP) of the modeled resonator, we show that it represents a measure of the increased delay imparted to a light wave, with respect to what the bandwidth of the reciprocal resonant structure would allow to the same amount of in-coupled power. No longer restricted to the value 1, we show that the TBP can instead be used as a figure of merit of the improvement in intracavity power enhancement due to the nonreciprocal coupling. © 2021 American Physical Society.</style></abstract><notes><style face="normal" font="default" size="100%">cited By 0</style></notes></record></records></xml>