Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Gento Yamahata"'
Publikováno v:
Physical Review B. 103
Understanding nonequilibrium electron dynamics in a tunable-barrier dynamic quantum dot is vital to achieve high-accuracy single-electron pumping, which has applications to metrological standards and quantum information devices. However, the dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9f936dc4512d81a09dc9f8f8be91788
https://doi.org/10.1103/physrevb.103.245306
https://doi.org/10.1103/physrevb.103.245306
Publikováno v:
2020 Conference on Precision Electromagnetic Measurements (CPEM).
We compare an electron pump and an ultrastable low-noise current amplifier (ULCA) as reference current sources for calibrating a high-gain current preamplifier at pA-level currents. Using the electron pump on a quantized current plateau, the current
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f952bc41f6c9a91b48edaa7d8e591102
https://doi.org/10.1109/cpem49742.2020.9191724
https://doi.org/10.1109/cpem49742.2020.9191724
Autor:
G. A. C. Jones, Gento Yamahata, Akira Fujiwara, Patrick See, Stephen P. Giblin, J. P. Griffiths, Masaya Kataoka, D. A. Ritchie, Ian Farrer
Publikováno v:
2020 Conference on Precision Electromagnetic Measurements (CPEM).
We have directly compared the current from two dissimilar quantized charge pumps each pumping one electron per cycle at 825 MHz. The currents are equal to within roughly 1 part in 106, although a long time constant of unknown origin prevents stronger
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3392e40535c139b19b691537df4c8d9c
https://doi.org/10.1109/cpem49742.2020.9191837
https://doi.org/10.1109/cpem49742.2020.9191837
Autor:
Pekka Immonen, Gento Yamahata, Stephen P. Giblin, Akira Fujiwara, Máté Jenei, Antti Kemppinen, Masaya Kataoka, Mikko Möttönen, Antti Manninen, Emma Mykkänen
Publikováno v:
Giblin, S P, Mykkänen, E, Kemppinen, A, Immonen, P, Manninen, A, Jenei, M, Möttönen, M, Yamahata, G, Fujiwara, A & Kataoka, M 2020, ' Realisation of a quantum current standard at liquid helium temperature with sub-ppm reproducibility ', Metrologia, vol. 57, no. 2, 025013 . https://doi.org/10.1088/1681-7575/ab72e0
A silicon electron pump operating at the temperature of liquid helium has demonstrated repeatable operation with sub-ppm accuracy. The pump current, approximately 168 pA, is measured by three laboratories, and the measurements agree with the expected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59163a5d3094d14e8e5ebe29e2383239
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
An advanced understanding of ultrafast coherent electron dynamics is necessary for the application of submicrometre devices under a non-equilibrium drive to quantum technology, including on-demand single-electron sources, electron quantum optics, qub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e56104242b54e562e4a31cad28c3a271
http://hdl.handle.net/10261/210832
http://hdl.handle.net/10261/210832
Autor:
Mikko Möttönen, Akira Fujiwara, Myung-Ho Bae, Stephen P. Giblin, Nam Kim, Gento Yamahata, Masaya Kataoka, Alessandro Rossi
We review recent precision measurements on semiconductor tunable-barrier electron pumps operating in a ratchet mode. Seven studies on five different designs of pumps have reported measurements of the pump current with relative total uncertainties aro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c38fde4796497b85ccfd6fd0f6e21308
Publikováno v:
Extended Abstracts of the 2018 International Conference on Solid State Devices and Materials.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::230109ed307307ab9afa4a01ede8e163
https://doi.org/10.7567/ssdm.2018.a-3-01
https://doi.org/10.7567/ssdm.2018.a-3-01
Publikováno v:
2017 Silicon Nanoelectronics Workshop (SNW).
Scaling of silicon MOSFETs has been predicted to go around 10 nm and below. For such a small transistor a gate-all-around nanowire is regarded as an ideal geometry to maintain gate control. On the other hand, such downsizing and excellent gate contro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7fa94663a7e826e6cb09a29b30429cd
https://doi.org/10.23919/snw.2017.8242277
https://doi.org/10.23919/snw.2017.8242277
Publikováno v:
Scientific Reports
A gigahertz single-electron (SE) pump with a semiconductor charge island is promising for a future quantum current standard. However, high-accuracy current in the nanoampere regime is still difficult to achieve because the performance of SE pumps ten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c6e133da021efee9d46b03e66a7ebce
https://pubmed.ncbi.nlm.nih.gov/28322339
https://pubmed.ncbi.nlm.nih.gov/28322339
Publikováno v:
2016 IEEE International Electron Devices Meeting (IEDM).
Quantum computing is no longer a future technology. Recent advances in D-Wave computers based on quantum annealing and superconducting devices, and the demonstration of long spin decoherence times in isotopically-enriched Si qubits, have accelerated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a80e79bad83b37f6f990dafc29a448f
https://doi.org/10.1109/iedm.2016.7838408
https://doi.org/10.1109/iedm.2016.7838408