TY - JOUR
T1 - Approaching ultrastrong coupling in transmon circuit QED using a high-impedance resonator
AU - Bosman, Sal J.
AU - Gely, Mario F.
AU - Singh, Vibhor
AU - Bothner, Daniel
AU - Castellanos-Gomez, Andres
AU - Steele, Gary A.
PY - 2017/6/29
Y1 - 2017/6/29
N2 - In this experiment, we couple a superconducting transmon qubit to a high-impedance 645Ω microwave resonator. Doing so leads to a large qubit-resonator coupling rate g, measured through a large vacuum Rabi splitting of 2g≃910 MHz. The coupling is a significant fraction of the qubit and resonator oscillation frequencies ω, placing our system close to the ultrastrong coupling regime (g=g/ω=0.071 on resonance). Combining this setup with a vacuum-gap transmon architecture shows the potential of reaching deep into the ultrastrong coupling g∼0.45 with transmon qubits.
AB - In this experiment, we couple a superconducting transmon qubit to a high-impedance 645Ω microwave resonator. Doing so leads to a large qubit-resonator coupling rate g, measured through a large vacuum Rabi splitting of 2g≃910 MHz. The coupling is a significant fraction of the qubit and resonator oscillation frequencies ω, placing our system close to the ultrastrong coupling regime (g=g/ω=0.071 on resonance). Combining this setup with a vacuum-gap transmon architecture shows the potential of reaching deep into the ultrastrong coupling g∼0.45 with transmon qubits.
UR - http://resolver.tudelft.nl/uuid:8c9c9443-6eae-4e16-a6f6-c32936d1ae95
UR - http://www.scopus.com/inward/record.url?scp=85023202353&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.95.224515
DO - 10.1103/PhysRevB.95.224515
M3 - Article
AN - SCOPUS:85023202353
SN - 1098-0121
VL - 95
JO - Physical Review B (Condensed Matter and Materials Physics)
JF - Physical Review B (Condensed Matter and Materials Physics)
IS - 22
M1 - 224515
ER -