= John M. Martinis
{c}
{tag=Physicist}
{wiki}
= John Martinis
{c}
{synonym}
= J. M. Martinis
{c}
{synonym}
<John M. Martinis> coauthored a 1985 observation of quantized <energy levels> in a current-biased <Josephson junction>. The relevant coordinate was the <phase difference> across an electrical circuit element, rather than the position of one isolated particle. The measured levels agreed with a <quantum mechanics> calculation using junction parameters measured in the classical regime. This showed that a fabricated superconducting circuit could possess a discrete excitation spectrum suitable for controlled quantum experiments.<Energy-Level Quantization in the Zero-Voltage State of a Current-Biased Josephson Junction by John M. Martinis and others>[Physical Review Letters 55, 1543 (1985), abstract]{ref}
A <physicist> researching <superconducting devices> and <quantum computers> based on <Josephson junctions>.<John Martinis by University of California, Santa Barbara>[Distinguished Professor; research paragraph on superconducting devices and Josephson-junction quantum bits]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/John%20Martinis%20%28cropped%29.jpg?width=250]
{title=Portrait of <John M. Martinis>}
{description=David Orban, Flickr photograph, 13 February 2007; existing Commons crop. https://creativecommons.org/licenses/by/2.0/[Creative Commons Attribution 2.0 Generic.], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:John_Martinis_%28cropped%29.jpg}
{width=250}
Back to article page
