Detection of geometric phases in superconducting nanocircuits
When a quantum-mechanical system undergoes an adiabatic cyclic evolution, it acquires a geometrical phase factor' in addition to the dynamical one; this effect has been demonstrated in a variety of microscopic systems. Advances in nanotechnology should enable the laws of quantum dynamics to be...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2000
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| _version_ | 1797098175147802624 |
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| author | Falci, G Fazio, R Palma, G Siewert, J Vedral, V |
| author_facet | Falci, G Fazio, R Palma, G Siewert, J Vedral, V |
| author_sort | Falci, G |
| collection | OXFORD |
| description | When a quantum-mechanical system undergoes an adiabatic cyclic evolution, it acquires a geometrical phase factor' in addition to the dynamical one; this effect has been demonstrated in a variety of microscopic systems. Advances in nanotechnology should enable the laws of quantum dynamics to be tested at the macroscopic level, by providing controllable artificial two-level systems (for example, in quantum dots and superconducting devices). Here we propose an experimental method to detect geometric phases in a superconducting device. The setup is a Josephson junction nanocircuit consisting of a superconducting electron box. We discuss how interferometry based on geometrical phases may be realized, and show how the effect may be applied to the design of gates for quantum computation. |
| first_indexed | 2024-03-07T05:05:50Z |
| format | Journal article |
| id | oxford-uuid:d9e238b5-3c38-4283-9c81-c9959929181a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:05:50Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:d9e238b5-3c38-4283-9c81-c9959929181a2022-03-27T08:59:09ZDetection of geometric phases in superconducting nanocircuitsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d9e238b5-3c38-4283-9c81-c9959929181aEnglishSymplectic Elements at Oxford2000Falci, GFazio, RPalma, GSiewert, JVedral, VWhen a quantum-mechanical system undergoes an adiabatic cyclic evolution, it acquires a geometrical phase factor' in addition to the dynamical one; this effect has been demonstrated in a variety of microscopic systems. Advances in nanotechnology should enable the laws of quantum dynamics to be tested at the macroscopic level, by providing controllable artificial two-level systems (for example, in quantum dots and superconducting devices). Here we propose an experimental method to detect geometric phases in a superconducting device. The setup is a Josephson junction nanocircuit consisting of a superconducting electron box. We discuss how interferometry based on geometrical phases may be realized, and show how the effect may be applied to the design of gates for quantum computation. |
| spellingShingle | Falci, G Fazio, R Palma, G Siewert, J Vedral, V Detection of geometric phases in superconducting nanocircuits |
| title | Detection of geometric phases in superconducting nanocircuits |
| title_full | Detection of geometric phases in superconducting nanocircuits |
| title_fullStr | Detection of geometric phases in superconducting nanocircuits |
| title_full_unstemmed | Detection of geometric phases in superconducting nanocircuits |
| title_short | Detection of geometric phases in superconducting nanocircuits |
| title_sort | detection of geometric phases in superconducting nanocircuits |
| work_keys_str_mv | AT falcig detectionofgeometricphasesinsuperconductingnanocircuits AT fazior detectionofgeometricphasesinsuperconductingnanocircuits AT palmag detectionofgeometricphasesinsuperconductingnanocircuits AT siewertj detectionofgeometricphasesinsuperconductingnanocircuits AT vedralv detectionofgeometricphasesinsuperconductingnanocircuits |