Zobrazeno 1 - 10
of 44
pro vyhledávání: '"James E. Lukens"'
Publikováno v:
Superconductor Science and Technology. 20:S445-S449
We report on development of a set-up for measuring intrawell dynamics in a Nb-based rf-SQUID qubit described by a double well potential, by rapidly tilting the potential, allowing escape to the adjacent well with high probability for an excited state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8165d1514bc861bbc4e355c0848fda66
https://doi.org/10.1088/0953-2048/20/11/s28
https://doi.org/10.1088/0953-2048/20/11/s28
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:117-120
The authors describe a process for fabrication of Nb/AlO/sub x//Nb Josephson junction circuits for quantum computation. The process involves only one etch step and incorporates electron beam lithography and a self-aligned lift-off of the dielectric r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46c996df56fa486d2d2e4fdd66115d20
https://doi.org/10.1109/tasc.2005.849708
https://doi.org/10.1109/tasc.2005.849708
Autor:
James E. Lukens, Yu.A. Polyakov, Konstantin K. Likharev, Sergey K. Tolpygo, X. Liu, N. Simonian, E. Cimpoiasu
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 13:99-102
We have measured DC I-V curves of niobium-trilayer (Nb/Al/AlO/sub x//Nb) junctions with barriers thermally grown within a broad range of oxygen exposure E=Pt, from 2/spl times/10/sup 5/ to 2/spl times/10/sup 9/ Pa-s, and for applied electric fields r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d314a991425e3fbbd08622d20dd7e82d
https://doi.org/10.1109/tasc.2003.813655
https://doi.org/10.1109/tasc.2003.813655
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 7:3107-3110
Radiation from a linear array oscillator with a spiral antenna has been measured using an off-chip coupled bolometer. The array oscillator has a distributed array structure with 300 resistively shunted junctions which are placed in the groups of 6 ju
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40f68aaf95f2cf9ca66cc42733bc0c4b
https://doi.org/10.1109/77.621990
https://doi.org/10.1109/77.621990
Publikováno v:
The Review of scientific instruments. 84(1)
Careful filtering is necessary for observations of quantum phenomena in superconducting circuits at low temperatures. Measurements of coherence between quantum states requires extensive filtering to protect against noise coupled from room temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f0e7eba65562f3da05913c1eaa22581
https://pubmed.ncbi.nlm.nih.gov/23387678
https://pubmed.ncbi.nlm.nih.gov/23387678
Publikováno v:
Physical Review Letters. 76:3404-3407
A population inversion has been created between the two adjacent fluxoid wells (with energy difference $\ensuremath{\varepsilon}$) in an rf SQUID subject to weak radiation at 100 GHz. The states in the two wells have opposite currents, of magnitude \
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb4779f8f745577342c240b3239fe0c6
https://doi.org/10.1103/physrevlett.76.3404
https://doi.org/10.1103/physrevlett.76.3404
Publikováno v:
Physica B: Condensed Matter. 203:354-360
Traps, consisting of arrays of nano-scale aluminum tunnel junctions, have been shown to hold single electrons for over 10 4 s (limited by observation time) at 50 mK. The barrier Δ U to the change of the charge state of the trap has a measured value
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f11b85bd0c8b14db1519717bedd5e7fa
https://doi.org/10.1016/0921-4526(94)90080-9
https://doi.org/10.1016/0921-4526(94)90080-9
This project was focused on key fundamental issues of future hybrid CMOS/nanodevice circuits: (i) optimization of metal-oxide devices with resistive bistability, and (ii) design and simulation of single-electron molecular latching switches. The repor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd904d3f0bea3e1329cb694ce78541c9
https://doi.org/10.21236/ada564340
https://doi.org/10.21236/ada564340
Publikováno v:
Physical Review Letters. 66:810-813
The dynamics of a dissipative, quantized macroscopic two-state system have been experimentally investigated through the measurement of tunneling transitions between the adjacent, equal-energy fluxoid states of a superconducting loop containing Joseph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2bfbbff62d7ee8957d12f6533a04297
https://doi.org/10.1103/physrevlett.66.810
https://doi.org/10.1103/physrevlett.66.810
We have measured the low frequency critical current noise in Nb/AlO$_{\mathrm{x}}$/Nb Josephson junctions. Unshunted junctions biased above the gap voltage and resistively shunted junctions biased near the critical current, $I_{c}$, have been measure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78d0499e42b16eba26cdfad9667029da
http://arxiv.org/abs/0809.3272
http://arxiv.org/abs/0809.3272