Controlled dephasing of Andreev states in superconducting quantum point contacts
We have studied the relaxation and dephasing processes in a superconducting quantum point contact induced by the interaction with an electromagnetic environment. Based on a density matrix approach we obtain the rates for the dissipative dynamics as function of the transmission, the phase difference...
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2001
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito http://hdl.handle.net/20.500.12110/paper_01631829_v64_n14_p1405111_Desposito |
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paper:paper_01631829_v64_n14_p1405111_Desposito2023-06-08T15:13:55Z Controlled dephasing of Andreev states in superconducting quantum point contacts Despósito, Marcelo Arnaldo Levy Yeyati, Alfredo article calculation conductor density dynamics electromagnetic field quantum mechanics superconductor We have studied the relaxation and dephasing processes in a superconducting quantum point contact induced by the interaction with an electromagnetic environment. Based on a density matrix approach we obtain the rates for the dissipative dynamics as function of the transmission, the phase difference on the contact, and the external impedance. Our calculation allows us to determine the appropriate range of parameters for the observation of coherent oscillations in the current through the contact. Fil:Despósito, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Levy Yeyati, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito http://hdl.handle.net/20.500.12110/paper_01631829_v64_n14_p1405111_Desposito |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
article calculation conductor density dynamics electromagnetic field quantum mechanics superconductor |
| spellingShingle |
article calculation conductor density dynamics electromagnetic field quantum mechanics superconductor Despósito, Marcelo Arnaldo Levy Yeyati, Alfredo Controlled dephasing of Andreev states in superconducting quantum point contacts |
| topic_facet |
article calculation conductor density dynamics electromagnetic field quantum mechanics superconductor |
| description |
We have studied the relaxation and dephasing processes in a superconducting quantum point contact induced by the interaction with an electromagnetic environment. Based on a density matrix approach we obtain the rates for the dissipative dynamics as function of the transmission, the phase difference on the contact, and the external impedance. Our calculation allows us to determine the appropriate range of parameters for the observation of coherent oscillations in the current through the contact. |
| author |
Despósito, Marcelo Arnaldo Levy Yeyati, Alfredo |
| author_facet |
Despósito, Marcelo Arnaldo Levy Yeyati, Alfredo |
| author_sort |
Despósito, Marcelo Arnaldo |
| title |
Controlled dephasing of Andreev states in superconducting quantum point contacts |
| title_short |
Controlled dephasing of Andreev states in superconducting quantum point contacts |
| title_full |
Controlled dephasing of Andreev states in superconducting quantum point contacts |
| title_fullStr |
Controlled dephasing of Andreev states in superconducting quantum point contacts |
| title_full_unstemmed |
Controlled dephasing of Andreev states in superconducting quantum point contacts |
| title_sort |
controlled dephasing of andreev states in superconducting quantum point contacts |
| publishDate |
2001 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v64_n14_p1405111_Desposito http://hdl.handle.net/20.500.12110/paper_01631829_v64_n14_p1405111_Desposito |
| work_keys_str_mv |
AT despositomarceloarnaldo controlleddephasingofandreevstatesinsuperconductingquantumpointcontacts AT levyyeyatialfredo controlleddephasingofandreevstatesinsuperconductingquantumpointcontacts |
| _version_ |
1768542687389024256 |