Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Kazuyuki Kuroyama"'
Publikováno v:
Applied Physics Express, Vol 17, Iss 7, p 075002 (2024)
We have developed a theory for electromigration at metal nanocontacts. In the proposed theory, a metal atom is removed by kinetic energy transfer from a “lucky electron” that ballistically traverses a metal nanocontact, when the applied voltage e
Externí odkaz:
https://doaj.org/article/4e8289334dda4ed4ac628e73295460a4
Autor:
Sadashige Matsuo, Kazuyuki Kuroyama, Shunsuke Yabunaka, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, Seigo Tarucha
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033120 (2020)
We investigate the full counting statistics (FCS) of spin-conserving and spin-flip charge transitions in Pauli-spin blockade regime of a GaAs double quantum dot. Experimentally, we executed real-time observation of charge transitions and constructed
Externí odkaz:
https://doaj.org/article/b129cde2b7024849bfd954ba4490da96
Autor:
Kazuyuki Kuroyama, Sadashige Matsuo, Jo Muramoto, Shunsuke Yabunaka, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, Yasuhiro Tokura, Seigo Tarucha
Publikováno v:
Physical Review Letters. 129
Quantum dots are recognized as a suitable platform for studying thermodynamic phenomena involving single electronic charges and spins in nano-scale devices. However, such a thermodynamic system is usually driven by electron reservoirs at different te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b8852fae056726114af09d274eac134
https://doi.org/10.1103/physrevlett.129.095901
https://doi.org/10.1103/physrevlett.129.095901
Autor:
Arne Ludwig, Kazuyuki Kuroyama, Shunsuke Yabunaka, Sascha R. Valentin, Sadashige Matsuo, Seigo Tarucha, Andreas D. Wieck
Publikováno v:
Physical Review Research. 2
We investigate the full counting statistics (FCS) of spin-conserving and spin-flip charge transitions in Pauli-spin blockade regime of a GaAs double quantum dot. A theoretical model is proposed to evaluate all spin-conserving and spin-flip tunnel rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb411c0961da6dc6fe005be78217c945
https://doi.org/10.1103/physrevresearch.2.033120
https://doi.org/10.1103/physrevresearch.2.033120
Autor:
Kazuyuki Kuroyama, Boqi Qiu, Ryoka Kondo, Naomi Nagai, Kazuhiko Hirakawa, Tianye Niu, Ya Zhang
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Utilizing a thermomechanical transduction scheme, we have developed an uncooled, sensitive, and fast THz bolometer by using a doubly clamped GaAs MEMS beam resonator as a sensitive thermistor. Owing to its ultra-high temperature sensitivity (the nois
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d4fe7bf7af55fb6e2ccc9188721af56
https://doi.org/10.1109/irmmw-thz.2019.8873848
https://doi.org/10.1109/irmmw-thz.2019.8873848
Autor:
Jo Muramoto, Arne Ludwig, Sadashige Matsuo, Kazuyuki Kuroyama, Seigo Tarucha, Yasuhiro Tokura, Sascha R. Valentin, Andreas D. Wieck
Publikováno v:
2019 Compound Semiconductor Week (CSW).
Recently single electron transistors and quantum dots have been used for demonstration of the thermodynamics in nanodevices. The previous experimental studies only utilized the charge degree of freedom of the electrons while no reports focus on the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e6b4db4126ff110156f9b91769ec2ec
https://doi.org/10.1109/iciprm.2019.8819040
https://doi.org/10.1109/iciprm.2019.8819040
Autor:
Giles Allison, Jo Muramoto, Marcus Larsson, T. Fujita, Sadashige Matsuo, Kazuyuki Kuroyama, Seigo Tarucha, Akira Oiwa, Kentaro Heya, Andreas D. Wieck, Arne Ludwig, Sascha R. Valentin, C. Y. Chang
Publikováno v:
Physical Review B. 99
Quantum state transfer from a single photon to a single electron following selection rules can only occur for a spin-resolved light-hole excitation in GaAs quantum dots; however, these phenomena have yet to be experimentally realized. Here, we report
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23ecac4e7554f03b2f2ddc451165f506
https://doi.org/10.1103/physrevb.99.085203
https://doi.org/10.1103/physrevb.99.085203
Autor:
Andreas D. Wieck, Sascha R. Valentin, Kazuyuki Kuroyama, Akira Oiwa, Sadashige Matsuo, Seigo Tarucha, Arne Ludwig, Takafumi Fujita, Marcus Larsson
Publikováno v:
Scientific Reports
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Quantum entanglement between different forms of qubits is an indication of the universality of quantum mechanics. Entanglement transfer between light and matter, especially photon and spin, has long been studied as the central concept, but it remains
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42edf8030faed3be6cafb7c310c1b5e6
https://doi.org/10.1038/s41598-017-16899-w
https://doi.org/10.1038/s41598-017-16899-w