Zobrazeno 1 - 10
of 44
pro vyhledávání: '"F C Wellstood"'
Autor:
B Suri, Z K Keane, R Ruskov, Lev S Bishop, C Tahan, S Novikov, J E Robinson, F C Wellstood, B S Palmer
Publikováno v:
New Journal of Physics, Vol 15, Iss 12, p 125007 (2013)
We report on the spectrum of a superconducting transmon device coupled to a planar superconducting resonator in the strong dispersive limit where discrete peaks, each corresponding to a different number of photons, are resolved. A thermal population
Externí odkaz:
https://doaj.org/article/101866db61ff4c929defb24a8de9411c
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6f5365adebbde05e50e3f7dcd046f7f
https://doi.org/10.1109/tasc.2023.3243198
https://doi.org/10.1109/tasc.2023.3243198
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Precise quantum state preparation plays an important role in quantum information processing. Here, Premaratneet al. use stimulated Raman adiabatic passage to transfer population from a superconducting transmon qubit to a cavity Fock state.
Externí odkaz:
https://doaj.org/article/6cd2790354924c6b992223036a417755
Autor:
Zach Steffen, S. K. Dutta, Haozhi Wang, Kungang Li, Yizhou Huang, Yi-Hsiang Huang, Advait Mathur, F. C. Wellstood, B. S. Palmer
We have fabricated and characterized asymmetric gap-engineered junctions and transmon devices. To create Josephson junctions with asymmetric gaps, Ti was used to proximitize and lower the superconducting gap of the Al counter-electrode. DC IV measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1a67a75fbb72869dd3bc538e27ece73
http://arxiv.org/abs/2302.12280
http://arxiv.org/abs/2302.12280
Autor:
Kungang Li, S. K. Dutta, Zachary Steffen, Dylan Poppert, Shahriar Keshvari, Jeffery Bowser, B. S. Palmer, C. J. Lobb, F. C. Wellstood
To test the contribution of non-equilibrium quasiparticles to qubit relaxation, we have repeatedly measured the relaxation time T_1 in Al/AlOx/Al transmons with electrodes that have different superconducting gaps. In one device, the first layer elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d14aed671185966fc6a0471964f59ad
Autor:
Z. Kim, C. P. Vlahacos, J. E. Hoffman, J. A. Grover, K. D. Voigt, B. K. Cooper, C. J. Ballard, B. S. Palmer, M. Hafezi, J. M. Taylor, J. R. Anderson, A. J. Dragt, C. J. Lobb, L. A. Orozco, S. L. Rolston, F. C. Wellstood
Publikováno v:
AIP Advances, Vol 1, Iss 4, Pp 042107-042107-6 (2011)
We describe a thin-film superconducting Nb microwave resonator, tunable to within 0.3 ppm of the hyperfine splitting of 87Rb at fRb = 6.834683 GHz. We coarsely tuned the resonator using electron-beam lithography, decreasing the resonance frequency fr
Externí odkaz:
https://doaj.org/article/ecbb131db6e046afb047d4512c651255
Autor:
F. C. Wellstood, Timothy M. Sweeney, J. E. M. Robinson, B. Suri, S.P. Premaratne, Benjamin Palmer, Sergey Novikov
Publikováno v:
Nature Physics. 12:75-79
Atomic three-level systems dressed by two coherent electromagnetic fields can exhibit coherent population trapping and electromagnetically induced transparency (EIT) due to quantum interference. By addressing the combined qubit-cavity states of a sup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::764b717da0694c7213d32b27f3af903a
https://doi.org/10.1038/nphys3537
https://doi.org/10.1038/nphys3537
Autor:
J. R. Anderson, R. P. Budoyo, Steven L. Rolston, Jonathan E. Hoffman, Jared Hertzberg, C. J. Lobb, K.D. Voigt, F. C. Wellstood, C.J. Ballard, Jongmin Lee, Jeffrey Grover, Pablo Solano, Luis A. Orozco
Publikováno v:
IEEE Transactions on Applied Superconductivity. 25:1-5
We have coupled a tapered optical microfiber to a translatable thin-film lumped-element superconducting Al microwave resonator that is cooled to 15 mK. The thin-film resonator has a resonance frequency of 6.14 GHz, a quality factor of Q = 2.59 × 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::148f07839e6eeaeb753be8d71630af41
https://doi.org/10.1109/tasc.2014.2379628
https://doi.org/10.1109/tasc.2014.2379628
Publikováno v:
Physical Review A. 96
We examine coherent population trapping in a circuit-QED system consisting of an Al/${\mathrm{AlO}}_{x}$/Al transmon qubit embedded in an Al three-dimensional cavity. By engineering the dissipation rate of the cavity to be much larger than that of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02ed16bf904be00ed88a23f37707bfc8
https://doi.org/10.1103/physreva.96.043858
https://doi.org/10.1103/physreva.96.043858
Autor:
J. R. Anderson, R. P. Budoyo, K.D. Voigt, Jared Hertzberg, F. C. Wellstood, Christopher Lobb, Z. Kim, C.J. Ballard
Publikováno v:
Physical Review B. 93
We have illuminated a thin-film superconducting Al lumped-element microwave resonator with 780 nm light and observed the resonator quality factor and resonance frequency as a function of illumination and microwave power in the 20 to 300 mK temperatur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c634ae59f0fa0b80af0b40185bfd8b7
https://doi.org/10.1103/physrevb.93.024514
https://doi.org/10.1103/physrevb.93.024514