Nonlinear microwave response of aluminum weak-link Josephson oscillators

Details Nonlinear microwave response of aluminum weak-link Josephson oscillators Nonlinear microwave response of aluminum weak-link Josephson oscillators

2011-01-24

arxiv.org/abs/1101.4672v1

Appl. Phys. Lett. 98, 123115 (2011)

Physics

Condensed Matter

Superconductivity

3 pages, 4 figures

Scientific paper

10.1063/1.3570693

We present the driven response at T=30mK of 6 GHz superconducting resonators constructed from capacitively-shunted three dimensional (3D) aluminum nanobridge superconducting quantum interference devices (nanoSQUIDs). We observe flux modulation of the resonant frequency in quantitative agreement with numerical calculation and characteristic of near-ideal short weak link junctions. Under strong microwave excitation, we observe stable bifurcation in devices with coupled quality factor (Q) ranging from ~30-3500. Near this bias point, parametric amplification with > 20dB gain, 40 MHz bandwidth, and near quantum-limited noise performance is observed. Our results indicate that 3D nanobridge junctions are attractive circuit elements to realize quantum bits.

Affiliated with

Also associated with

No associations

Rating

Nonlinear microwave response of aluminum weak-link Josephson oscillators does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonlinear microwave response of aluminum weak-link Josephson oscillators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear microwave response of aluminum weak-link Josephson oscillators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-540997