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SUMMARY:Quantum circuits: From ultra-strong light-matter coupling to balli
 stic transport in graphene
DTSTART:20180525T151500
DTSTAMP:20260509T025301Z
UID:ebef1afdee6f9d1d186bb1f31459dc5b26d891164486404729e10e55
CATEGORIES:Conferences - Seminars
DESCRIPTION:Gary Steele \nIn this talk\, I will present two results from 
 our recent work with superconducting microwave circuits. In the first\, I 
 will tell you about our implementation of ultra-strong light-matter coupl
 ing using a compact vacuum-gap transmon qubit design. Motivated by a desir
 e to analyze our data quantitatively\, we were led to a new circuit-quant
 isation model for this ultra-strong regime with transmon qubits\, with imp
 lications for understanding the problem of the convergence of the Lamb sh
 ift and the quantum (or non-quantum) nature of the Lamb shift itself. In t
 he second part of the talk\, I will tell you about our recent work combini
 ng quantum circuits with ballistic graphene Josephson junctions. Using a 
 unique technique that gives us simultaneous access to both the microwave a
 nd d.c. characteristics\, we both analyze the potential of graphene devic
 es for quantum microwave circuit applications\, and use the microwave meas
 urements to gain new insight into the current-phase relation of the induc
 ed mesoscopic proximity effect superconductivity.\n\nShort biography of th
 e speaker:\nDr. Gary Steele\, born in Toronto\, Canada\, obtained his Ph.
  D. from MIT in 2006\, working with Prof. Raymond Ashoori on scanning cap
 acitance imaging of the quantum Hall liquid. After his Ph. D.\, Gary mov
 ed to the Kavli Institute of Nanoscience in Delft\, where he worked with 
 Prof. Leo Kouwenhoven on ultraclean carbon nanotube quantum dots. In 2010
 \,  asa tenure-track assistant professor at the Kavli Institute in Delf
 t\, he started a new group as working on nanomechanics. As a tenured Ass
 ociate Professor since 2015\, Gary’s group now focuses on using quantum
  superconducting circuits to explore mechanics\, materials\, and topics i
 n circuit QED.\n\nLink to the webpage of the speaker
LOCATION:CE  5
STATUS:CONFIRMED
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