Zobrazeno 1 - 10
of 1 034
pro vyhledávání: '"Pappas D."'
Autor:
Cardani, L., Colantoni, I., Cruciani, A., De Dominicis, F., D'Imperio, G., Laubenstein, M., Mariani, A., Pagnanini, L., Pirro, S., Tomei, C., Casali, N., Ferroni, F., Frolov, D., Gironi, L., Grassellino, A., Junker, M., Kopas, C., Lachman, E., McRae, C. R. H., Mutus, J., Nastasi, M., Pappas, D. P., Pilipenko, R., Sisti, M., Pettinacci, V., Romanenko, A., Van Zanten, D., Vignati, M., Withrow, J. D., Zhelev, N. Z.
Radioactivity was recently discovered as a source of decoherence and correlated errors for the real-world implementation of superconducting quantum processors. In this work, we measure levels of radioactivity present in a typical laboratory environme
Externí odkaz:
http://arxiv.org/abs/2211.13597
For the past two and a half decades, anomalous heating of trapped ions from nearby electrode surfaces has continued to demonstrate unexpected results. Caused by electric-field noise, this heating of the ions' motional modes remains an obstacle for sc
Externí odkaz:
http://arxiv.org/abs/2104.07818
Autor:
Wang, Haozhi, Singh, S., McRae, C. R. H., Bardin, J. C., Lin, S. -X., Messaoudi, N., Castelli, A. R., Rosen, Y. J., Holland, E. T., Pappas, D. P., Mutus, J. Y.
Superconducting circuit testing and materials loss characterization requires robust and reliable methods for the extraction of internal and coupling quality factors of microwave resonators. A common method, imposed by limitations on the device design
Externí odkaz:
http://arxiv.org/abs/2103.01491
Autor:
McRae, C. R. H., McFadden, A., Zhao, R., Wang, H., Long, J. L., Zhao, T., Park, S., Bal, M., Palmstrøm, C. J., Pappas, D. P.
Epitaxially-grown superconductor/dielectric/superconductor trilayers have the potential to form high-performance superconducting quantum devices and may even allow scalable superconducting quantum computing with low-surface-area qubits such as the me
Externí odkaz:
http://arxiv.org/abs/2009.10101
Transmon qubits are ubiquitous in the pursuit of quantum computing using superconducting circuits. However, they have some drawbacks that still need to be addressed. Most importantly, the scalability of transmons is limited by the large device footpr
Externí odkaz:
http://arxiv.org/abs/2008.07652
Autor:
McRae, C. R. H., Lake, R. E., Long, J. L., Bal, M., Wu, X., Jugdersuren, B., Metcalf, T. H., Liu, X., Pappas, D. P.
The investigation of two-level-state (TLS) loss in dielectric materials and interfaces remains at the forefront of materials research in superconducting quantum circuits. We demonstrate a method of TLS loss extraction of a thin film dielectric by mea
Externí odkaz:
http://arxiv.org/abs/1909.07428
We investigate the work function (WF) variation of different Au crystallographic surface orientations with carbon atom adsorption. Ab-initio calculations within density-functional theory are performed on carbon deposited (100), (110), and (111) gold
Externí odkaz:
http://arxiv.org/abs/1903.00337
Autor:
Jooya, H. Z., McKay, K. S., Kim, E., Weck, P. F., Pappas, D. P., Hite, D. A., Sadeghpour, H. R.
Publikováno v:
Surface Science 677 (2018) 232-238
The variation of the work function upon carbon adsorption on the reconstructed Au(110) surface is measured experimentally and compared to density functional calculations. The adsorption dynamics is simulated with ab-initio molecular dynamics techniqu
Externí odkaz:
http://arxiv.org/abs/1805.06931
Fabrication of sub-micron Josephson junctions is demonstrated using standard processing techniques for high-coherence, superconducting qubits. These junctions are made in two separate lithography steps with normal-angle evaporation. Most significantl
Externí odkaz:
http://arxiv.org/abs/1705.08993
Autor:
Ku, H. S., Long, J. L., Wu, X., Bal, M., Lake, R. E., Barnes, Edwin, Economou, Sophia E., Pappas, D. P.
Publikováno v:
Phys. Rev. A 96, 042339 (2017)
It has been known since the early days of quantum mechanics that hyperbolic secant pulses possess the unique property that they can perform cyclic evolution on two-level quantum systems independently of the pulse detuning. More recently, it was reali
Externí odkaz:
http://arxiv.org/abs/1704.00803