@article {Cardea2021,
	title = {Unconventional time-bandwidth performance of resonant cavities with nonreciprocal coupling},
	journal = {Physical Review A},
	volume = {103},
	number = {1},
	year = {2021},
	note = {cited By 0},
	abstract = {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. {\textcopyright} 2021 American Physical Society.},
	doi = {10.1103/PhysRevA.103.013716},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100136237\&doi=10.1103\%2fPhysRevA.103.013716\&partnerID=40\&md5=a9b02206abaed13e400ec8a613522055},
	author = {Cardea, I. and Grassani, D. and Upham, J. and Schulz, S.A. and K. L. Tsakmakidis and Br{\`e}s, C.-S.}
}
