Microwave Oscillator Based on an Intrinsic BSCCO-Type Josephson Junction

Shapiro Steps in BSCCO Intrinsic Josephson Junctions

Josephson tunnel junction microwave attenuator

Josephson junction mixer using an external local oscillator

2014 Mixing experiments on niobium point contacts are reported for conversion from 95 GHz to 140 MHz. The conversion efficiency is less than predicted by the highly damped weak link model. The discrepancy is presumably due to mixing with higher harmonics of the local oscillator. The lowest noise temperature measured was T ~ 100 K which is of the same order as recently reported for cooled Schott...

Microwave spectroscopy on a double quantum dot with an on-chip Josephson oscillator

We present measurements on microwave spectroscopy on a double quantum dot with an on-chip microwave source. The quantum dots are realized in the two-dimensional electron gas of an AlGaAs/GaAs heterostructure and are weakly coupled in series by a tunneling barrier forming an ’ionic’ molecular state. As a microwave source we employ a Josephson oscillator formed by a long Nb/Al-AlOx/Nb junction. W...

An Extraordinary Josephson Junction

The combination of symmetry breaking effects, such as those occurring in magnets and superconductors, with topological order may result in remarkable new physics. Recent theoretical studies suggest that, in certain superconductors, exotic quasiparticle excitations can emerge that behave like Majorana fermions, chargeneutral quasiparticles that are their own antiparticles. In Physical Review Let...