Fast ion swapping for quantum-information processing
We demonstrate a swap gate between laser-cooled ions in a segmented microtrap via fast physical swapping of the ion positions. This operation is used in conjunction with qubit initialization, manipulation, and readout and with other types of shuttling operations such as linear transport and crystal...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v95_n5_p_Kaufmann http://hdl.handle.net/20.500.12110/paper_24699926_v95_n5_p_Kaufmann |
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paper:paper_24699926_v95_n5_p_Kaufmann2023-06-08T16:36:04Z Fast ion swapping for quantum-information processing Laser cooling Quantum optics Collective modes Crystal separation Ion crystals Laser-cooled Quantum process tomography Quantum-information processing Qubit initialization Truth tables Ions We demonstrate a swap gate between laser-cooled ions in a segmented microtrap via fast physical swapping of the ion positions. This operation is used in conjunction with qubit initialization, manipulation, and readout and with other types of shuttling operations such as linear transport and crystal separation and merging. Combining these operations, we perform quantum process tomography of the swap gate, obtaining a mean process fidelity of 99.5(5)%. The swap operation is demonstrated with motional excitations below 0.05(1) quantum for all six collective modes of a two-ion crystal for a process duration of 42μs. Extending these techniques to three ions, we reverse the order of a three-ion crystal and reconstruct the truth table for this operation, resulting in a mean process fidelity of 99.96(13)% in the logical basis. © 2017 American Physical Society. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v95_n5_p_Kaufmann http://hdl.handle.net/20.500.12110/paper_24699926_v95_n5_p_Kaufmann |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Laser cooling Quantum optics Collective modes Crystal separation Ion crystals Laser-cooled Quantum process tomography Quantum-information processing Qubit initialization Truth tables Ions |
| spellingShingle |
Laser cooling Quantum optics Collective modes Crystal separation Ion crystals Laser-cooled Quantum process tomography Quantum-information processing Qubit initialization Truth tables Ions Fast ion swapping for quantum-information processing |
| topic_facet |
Laser cooling Quantum optics Collective modes Crystal separation Ion crystals Laser-cooled Quantum process tomography Quantum-information processing Qubit initialization Truth tables Ions |
| description |
We demonstrate a swap gate between laser-cooled ions in a segmented microtrap via fast physical swapping of the ion positions. This operation is used in conjunction with qubit initialization, manipulation, and readout and with other types of shuttling operations such as linear transport and crystal separation and merging. Combining these operations, we perform quantum process tomography of the swap gate, obtaining a mean process fidelity of 99.5(5)%. The swap operation is demonstrated with motional excitations below 0.05(1) quantum for all six collective modes of a two-ion crystal for a process duration of 42μs. Extending these techniques to three ions, we reverse the order of a three-ion crystal and reconstruct the truth table for this operation, resulting in a mean process fidelity of 99.96(13)% in the logical basis. © 2017 American Physical Society. |
| title |
Fast ion swapping for quantum-information processing |
| title_short |
Fast ion swapping for quantum-information processing |
| title_full |
Fast ion swapping for quantum-information processing |
| title_fullStr |
Fast ion swapping for quantum-information processing |
| title_full_unstemmed |
Fast ion swapping for quantum-information processing |
| title_sort |
fast ion swapping for quantum-information processing |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v95_n5_p_Kaufmann http://hdl.handle.net/20.500.12110/paper_24699926_v95_n5_p_Kaufmann |
| _version_ |
1768546466426519552 |