32 citations · 37 across the 5 of their papers we have counts for
9 papers
Reducing strain in heterogeneous quantum devices using atomic layer deposition
Oscar W. Kennedy, James O'Sullivan, Christoph W. Zollitsch +3
We investigated the use of dielectric layers produced by atomic layer deposition (ALD) as an approach to strain mitigation in composite silicon/superconductor devices operating at…
Electric-field-driven conductance switching in encapsulated graphene nanogaps
E. Pyurbeeva, J. L. Swett, Q. Ye +2
Feedback-controlled electric breakdown of graphene in air or vacuum is a well-established way of fabricating tunnel junctions, nanogaps, and quantum dots. We show that the method i…
Nonlinear quantum processes in superconducting resonators terminated by neon-focused-ion-beam-fabricated superconducting nanowires
Jamie A. Potter, Oscar W. Kennedy, Jonathan C. Fenton +1
We have used a neon focused-ion-beam to fabricate both nanoscale Nb Dayem bridges and NbN phase-slip nanowires located at the short-circuited end of quarter-wavelength coplanar wav…
Rapid Thermal Annealing for Surface Optimisation of ZnO Substrates for MBE-Grown Oxide Two-Dimensional Electron Gases
Matthew Sparks, Oscar Kennedy, Paul Warburton
Two-dimensional electron gases (2DEGs) at the ZnO/ZnMgO interface are promising for applications in spintronics and quantum computing due to the combination of low spin-orbit coupl…
Spin resonance linewidths of bismuth donors in silicon coupled to planar microresonators
James O'Sullivan, Oscar W. Kennedy, Christoph W. Zollitsch +5
Ensembles of bismuth donor spins in silicon are promising storage elements for microwave quantum memories due to their long coherence times which exceed seconds. Operating an effic…
Tuning high-Q superconducting resonators by magnetic field reorientation
Christoph W. Zollitsch, James O'Sullivan, Oscar W. Kennedy +2
Superconducting resonators interfaced with paramagnetic spin ensembles are used to increase the sensitivity of electron spin resonance experiments and are key elements of microwave…