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Characterization and reduction of microfabrication-induced decoherence in superconducting quantum circuits
C. M. Quintana, A. Megrant, Z. Chen +18
Many superconducting qubits are highly sensitive to dielectric loss, making the fabrication of coherent quantum circuits challenging. To elucidate this issue, we characterize the i…
Fabrication and Characterization of Aluminum Airbridges for Superconducting Microwave Circuits
Zijun Chen, Anthony Megrant, Julian Kelly +16
Superconducting microwave circuits based on coplanar waveguides (CPW) are susceptible to parasitic slotline modes which can lead to loss and decoherence. We motivate the use of sup…
Spatial Fluctuations of Helical Dirac Fermions on the Surface of Topological Insulators
Haim Beidenkopf, Pedram Roushan, Jungpil Seo +5
Surfaces of topological insulators host a new class of states with Dirac dispersion and helical spin texture. Potential quantum computing and spintronic applications using these st…
Transmission of topological surface states through surface barriers
Jungpil Seo, Pedram Roushan, Haim Beidenkopf +3
Topological surface states are a class of novel electronic states that are of potential interest in quantum computing or spintronic applications. Unlike conventional two-dimensiona…