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Author | Kardakova, A.; Finkel, M.; Morozov, D.; Kovalyuk, V.; An, P.; Dunscombe, C.; Tarkhov, M.; Mauskopf, P.; Klapwijk, T.M.; Goltsman, G. | ||||
Title | The electron-phonon relaxation time in thin superconducting titanium nitride films | Type | Journal Article | ||
Year | 2013 | Publication | Appl. Phys. Lett. | Abbreviated Journal | Appl. Phys. Lett. |
Volume | 103 | Issue | 25 | Pages | 252602 (1 to 4) |
Keywords | disordered TiN films, electron-phonon relaxation time | ||||
Abstract | We report on the direct measurement of the electron-phonon relaxation time, τeph, in disordered TiN films. Measured values of τeph are from 5.5 ns to 88 ns in the 4.2 to 1.7 K temperature range and consistent with a T−3 temperature dependence. The electronic density of states at the Fermi level N0 is estimated from measured material parameters. The presented results confirm that thin TiN films are promising candidate-materials for ultrasensitive superconducting detectors. The work was supported by the Ministry of Education and Science of the Russian Federation, Contract No. 14.B25.31.0007 and by the RFBR Grant No. 13-02-91159. |
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Notes | Approved | no | |||
Call Number | RPLAB @ kovalyuk @ | Serial | 941 | ||
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Author | Beck, M.; Rousseau, I.; Klammer, M.; Leiderer, P.; Mittendorff, M.; Winnerl, S.; Helm, M.; Gol'tsman, G.N.; Demsar, J. | ||||
Title | Transient increase of the energy gap of superconducting NbN thin films excited by resonant narrow-band terahertz pulses | Type | Journal Article | ||
Year | 2013 | Publication | Phys. Rev. Lett. | Abbreviated Journal | Phys. Rev. Lett. |
Volume | 110 | Issue | 26 | Pages | 267003 (1 to 5) |
Keywords | NbN thin films, energy gap | ||||
Abstract | Observations of radiation-enhanced superconductivity have thus far been limited to a few type-I superconductors (Al, Sn) excited at frequencies between the inelastic scattering rate and the superconducting gap frequency 2Delta/h. Utilizing intense, narrow-band, picosecond, terahertz pulses, tuned to just below and above 2Delta/h of a BCS superconductor NbN, we demonstrate that the superconducting gap can be transiently increased also in a type-II dirty-limit superconductor. The effect is particularly pronounced at higher temperatures and is attributed to radiation induced nonthermal electron distribution persisting on a 100 ps time scale. | ||||
Address | Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457, Germany | ||||
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ISSN | 0031-9007 | ISBN | Medium | ||
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Notes | PMID:23848912 | Approved | no | ||
Call Number | Serial | 1370 | |||
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Author | Омельянук, А. Н.; Ильичев, Е. В.; Шевченко, С. Н. | ||||
Title | Квантовые когерентные явления в джозефсоновских кубитах | Type | Book Whole | ||
Year | 2013 | Publication | Наукова думка | Abbreviated Journal | |
Volume | Issue | Pages | |||
Keywords | Josephson qubit, quantum computer, Rabi cycle, Landau-Zener effect, multiphoton transitions, single qubits | ||||
Abstract | Монография посвящена актуальным проблемам физики сверхпроводниковых джозефсоновских кубитов — макроскопических квантовых структур, перспективных элементов квантовых компьютеров. Приведены элементы квантовой механики кубитов, фундаментальные свойства сверхпроводников, физика классических и квантовых джозефсоновских структур. Рассмотрены основные типы сверхпроводниковых кубитов. Изложены результаты экспериментальных и теоретических исследований квантовых когерентных явлений в джозефсоновских кубитах. Рассмотрены спектроскопия энергетичеÂских состояний, осцилляции Раби, эффект Ландау-Зинера, многофотонные переходы в одиночних кубитах и в системах связанных кубитов. Изучено влияние шумов на потоковый кубит и на его классический аналог. Для специалистов в области теоретической и прикладной физики, сверхпроводниковой микроэлектроники, а также аспирантов и студентов физико-технических специальностей. |
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Publisher | ФТИНТ им. Б. И. Верника НАН Украины | Place of Publication | Киев | Editor | |
Language | Russian | Summary Language | Original Title | ||
Series Editor | Series Title | Наукова книга | Abbreviated Series Title | ||
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ISSN | ISBN | 978-966-00-1260-8 | Medium | ||
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Notes | Ссылку прислал Саша Семенов в [RpL 755]. | Approved | no | ||
Call Number | Serial | 933 | |||
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