Zobrazeno 1 - 10
of 2 138
pro vyhledávání: '"Sandberg M"'
Publikováno v:
Clinical Interventions in Aging, Vol Volume 18, Pp 1607-1618 (2023)
Amelie Lindh Mazya,1,2 Anna Axmon,3 Magnus Sandberg,4 Anne-Marie Boström,5– 7 Anne W Ekdahl1,8 1Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden; 2Department of Geriat
Externí odkaz:
https://doaj.org/article/f68ec5947ef0421c8f7b26c8c3083d26
Autor:
Kurter, C., Murray, C. E., Gordon, R. T., Wymore, B. B., Sandberg, M., Shelby, R. M., Eddins, A., Adiga, V. P., Finck, A. D. K., Rivera, E., Stabile, A. A., Trimm, B., Wacaser, B., Balakrishnan, K., Pyzyna, A., Sleight, J., Steffen, M., Rodbell, K.
Publikováno v:
npj Quantum Inf 8, 31 (2022)
Non-equilibrium quasiparticles are possible sources for decoherence in superconducting qubits because they can lead to energy decay or dephasing upon tunneling across Josephson junctions (JJs). Here, we investigate the impact of the intrinsic propert
Externí odkaz:
http://arxiv.org/abs/2106.11488
Autor:
Gordon, R. T., Murray, C. E., Kurter, C., Sandberg, M., Hall, S. A., Balakrishnan, K., Shelby, R., Wacaser, B., Stabile, A. A., Sleight, J. W., Brink, M., Rothwell, M. B., Rodbell, K., Dial, O., Steffen, M.
Quantum computing relies on the operation of qubits in an environment as free of noise as possible. This work reports on measuring the impact of environmental radiation on lifetimes of fixed frequency transmon qubits with various capacitor pad geomet
Externí odkaz:
http://arxiv.org/abs/2105.14003
Autor:
Mamin, H. J., Huang, E., Carnevale, S., Rettner, C. T., Arellano, N., Sherwood, M. H., Kurter, C., Trimm, B., Sandberg, M., Shelby, R. M., Mueed, M. A., Madon, B. A., Pushp, A., Steffen, M., Rugar, D.
Publikováno v:
Phys. Rev. Applied 16, 024023 (2021)
We have demonstrated a novel type of superconducting transmon qubit in which a Josephson junction has been engineered to act as its own parallel shunt capacitor. This merged-element transmon (MET) potentially offers a smaller footprint and simpler fa
Externí odkaz:
http://arxiv.org/abs/2103.09163
Autor:
Mergenthaler, M., Müller, C., Ganzhorn, M., Paredes, S., Müller, P., Salis, G., Adiga, V. P., Brink, M., Sandberg, M., Hertzberg, J. B., Filipp, S., Fuhrer, A.
Publikováno v:
npj Quantum Information 7, 157 (2021)
One of the main limitations in state-of-the art solid-state quantum processors are qubit decoherence and relaxation due to noise in their local environment. For the field to advance towards full fault-tolerant quantum computing, a better understandin
Externí odkaz:
http://arxiv.org/abs/2103.07970
Autor:
Mergenthaler, M., Paredes, S., Müller, P., Müller, C., Filipp, S., Sandberg, M., Hertzberg, J., Adiga, V. P., Brink, M., Fuhrer, A.
Publikováno v:
Review of Scientific Instruments 92, 025121 (2021)
We describe design, implementation and performance of an ultra-high vacuum (UHV) package for superconducting qubit chips or other surface sensitive quantum devices. The UHV loading procedure allows for annealing, ultra-violet light irradiation, ion m
Externí odkaz:
http://arxiv.org/abs/2010.12090
Autor:
Schroer, M. D., Kolodrubetz, M. H., Kindel, W. F., Sandberg, M., Gao, J., Vissers, M. R., Pappas, D. P., Polkovnikov, Anatoli, Lehnert, K. W.
We present measurements of a topological property, the Chern number ($C_\mathrm{1}$), of a closed manifold in the space of two-level system Hamiltonians, where the two-level system is formed from a superconducting qubit. We manipulate the parameters
Externí odkaz:
http://arxiv.org/abs/1406.1817
Publikováno v:
Phys. Rev. Lett. 113, 187002 (2014)
We have generated frequency combs spanning 0.5 to 20 GHz in superconducting half wave resonators at T=3 K. Thin films of niobium-titanium nitride enabled this development due to their low loss, high nonlinearity, low frequency dispersion, and high cr
Externí odkaz:
http://arxiv.org/abs/1405.7117
Autor:
Sundqvist, K. M., Kintaş, S., Simoen, M., Krantz, P., Sandberg, M., Wilson, C. M., Delsing, P.
Publikováno v:
Appl. Phys. Lett. 103, 102603 (2013)
We describe a circuit model for a flux-driven SQUID. This is useful for developing insight into how these devices perform as active elements in parametric amplifiers. The key concept is that frequency mixing in a flux-pumped SQUID allows for the appe
Externí odkaz:
http://arxiv.org/abs/1305.7051
Autor:
Chang, J., Vissers, M. R., Corcoles, A. D., Sandberg, M., Gao, J., Abraham, David W., Chow, Jerry M., Gambetta, Jay M., Rothwell, M. B., Keefe, G. A., Steffen, Matthias, Pappas, D. P.
Publikováno v:
Appl. Phys. Lett. 103, 012602 (2013)
We demonstrate enhanced relaxation and dephasing times of transmon qubits, up to ~ 60 \mu s by fabricating the interdigitated shunting capacitors using titanium nitride (TiN). Compared to lift-off aluminum deposited simultaneously with the Josephson
Externí odkaz:
http://arxiv.org/abs/1303.4071