量子電腦 - 中研院物理研究所

Circuit QED
• 1D trasmission line resonator consists of a full-wave section of superconducting
coplanar wave quide.
• A Cooper-pair p box qubit (an effective two-level atom) is placed between the
superconducting lines and is capacitively coupled to the center trace at a maximum
of the voltage standing wave, yielding a strong electric dipole interaction between
the qubit and a single photon in the cavity.
A. Blais et al.,
PRA 69,
062320 (2004)
Exceptionally small
cavity volume (one
million times smaller
than 3D cavities)
Large artificial i atom
size (10000 times
larger than an atom)
Leading to strong coupling with g ,
κ γ