We demonstrate superconducting qubits using epitaxially grown Josephson junctions. A
fully epitaxial NbN/AlN/NbN trilayer on MgO (100) substrate is processed by …

Since the first demonstration of coherent oscillations a little over a decade ago, rapid
progress in the development of superconducting qubits has resulted in more than a …

Twin symmetry texture of energetically condensed niobium thin films on sapphire substrate (a-plane
Al2O3) | Journal of Applied Physics | AIP Publishing Skip to Main Content Umbrella Alt Text …

Tantalum films incorporated into superconducting circuits have empirically low surface
losses, resulting in long-lived qubit states. Remaining loss pathways originate in …

Epitaxial Ta films were grown on c-cut and r-cut sapphire substrates using magnetron
sputtering. X-ray diffraction measurements indicate that the Ta films grown on c-cut sapphire …

Josephson junctions were fabricated using two different methods of barrier formation. The
trilayers employed were Nb/Al–AlO x/Nb on sapphire, where the first two layers were …

Noncontact atomic force microscopy (NC-AFM) has been performed on an aluminum oxide
film grown on NiAl (110) in ultrahigh vacuum (UHV) at low temperature (5 K). Results …

The heteroepitaxial growth of Re (0001) films on Nb (110) surfaces has been investigated.
Nb/Re bilayers were grown on A-plane sapphire—α-Al 2 O 3 (11 2 0)—by molecular beam …

Epitaxial hetero-structures have been turned to in recent years in an attempt to eliminate
charge fluctuations in Josephson junction-based quantum bits. Amorphous tunnel-barriers …

In this thesis, the structural and electronic properties of two important niobium oxide systems
are studied, namely NbO2, and NbO nanocrystals on Nb (110). A particular emphasis is …