123 citations · 126 across the 4 of their papers we have counts for
4 papers
Transition-state lattice modes and the breakdown of adiabatic tunneling for hydrogen and deuterium in bcc Nb
P. Graham Pritchard, James M. Rondinelli
Interstitial hydrogen and deuterium in body-centered-cubic metals constitute archetypal quantum tunneling systems. Their relevance has been renewed by the connection between hydrog…
Lattice-Renormalized Tunneling Models for Superconducting Qubit Materials
P. G. Pritchard, James M. Rondinelli
We present a lattice-renormalized formalism for configurational tunneling two-level systems (TLS) that overcomes limitations of minimum-energy-path and light-particle models. Deriv…
Suppressed paramagnetism in amorphous TaO oxides and its link to superconducting qubit performance
P. Graham Pritchard, James M. Rondinelli
Reduced transmon qubit coherence times have been linked to the amorphous oxide layers formed by thin film capacitors during processing. Because Ta or Ta capped Nb capacitors…
Systematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation
Mustafa Bal, Akshay A. Murthy, Shaojiang Zhu +37
We present a novel transmon qubit fabrication technique that yields systematic improvements in T relaxation times. We fabricate devices using an encapsulation strategy that inv…