Figure1 (IMAGE) Tokyo Medical and Dental University Caption Schematic of a Josephson quantum filter (JQF). The data qubit (DQ) to be protected and the JQF are directly coupled to a semi-infinite waveguide, through which control pulses for the DQ are applied. Credit Department of Physic, College of Liberal Arts and Sciences,TMDU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.