G. Allison, A. Oiwa, et al.
JPCS
We propose and analyze a technique for producing a beam-splitting quantum gate between two modes of a ring-resonator superconducting cavity. The cavity has two integrated superconducting quantum interference devices (SQUIDs) that are modulated by applying an external magnetic field. The gate is accomplished by applying a radio frequency pulse to one of the SQUIDs at the difference of the two mode frequencies. Departures from perfect beam splitting only arise from corrections to the rotating wave approximation; an exact calculation gives a fidelity of >0.9992. Our construction completes the toolkit for linear-optics quantum computing in circuit quantum electrodynamics. © 2010 The American Physical Society.
G. Allison, A. Oiwa, et al.
JPCS
Matthias Steffen, Frederico Brito, et al.
New Journal of Physics
Guido Burkard, Daniel Loss
Physical Review Letters
Guido Burkard, Frederico Brito
Physical Review B - CMMP