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Dr. Zhi-Rong Lin (林志荣 博士)
Postdoctoral Researcher
RIKEN Center for Emergent Matter Science, Japan
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Abstract: Superconducting circuits are demonstrated to be a very promising platform for constructing large quantum processor. Meanwhile Josephson parametric amplifiers (JPA) become essential tools in superconducting quantum information experiments. Our group has developed low noise flux-driven JPA since 2008. Recently, we incorporated the flux-driven JPA as a preamplifier in our setup for the dispersive readout of superconducting qubits. This led to drastic improvement in the signal to noise ratio and enabled us to achieve single-shot readout and observation of quantum jumps. Further, the readout technique can be applied to real-time detection of single microwave photons. Finally, I would like to present our new qubit readout scheme using a Josephson parametric phase-locked oscillator, which features the combined advantages of several disparate schemes.
About the Speaker: Dr. Zhirong Lin received his
Ph. D. in Physics from the University of Science and Technology of China in 2011, where he obtained the “President Scholarship of the Chinese Academy of Sciences”. In December 2011, he moved to the Institute of Physical and Chemical Research (RIKEN), Japan, where he is a postdoctoral researcher. His research interests include quantum information processing and quantum optics using superconducting circuits and electronic transport properties of hybrid graphene nanoribbon–superconductor device. Dr. Lin has around 10 peer-reviewed publications including PRL, APL, and PRB.
Date&Time: March 31, 2014 (Monday), 14:00 -15:00
Location: 606 Conference Room
