Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture
It is advantageous for any quantum processor to support different classes of two-qubit quantum logic gates when compiling quantum circuits, a property that is typically not present in existing platforms. In particular, access to a gate set that includes support for the CZ-, iSWAP-, and SWAP-type fam...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/adeba7 |
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| author | Christian Križan Janka Biznárová Liangyu Chen Emil Hogedal Amr Osman Christopher W Warren Sandoko Kosen Hang-Xi Li Tahereh Abad Anuj Aggarwal Marco Caputo Jorge Fernández-Pendás Akshay Gaikwad Leif Grönberg Andreas Nylander Robert Rehammar Marcus Rommel Olga I Yuzephovich Anton Frisk Kockum Joonas Govenius Giovanna Tancredi Jonas Bylander |
| author_facet | Christian Križan Janka Biznárová Liangyu Chen Emil Hogedal Amr Osman Christopher W Warren Sandoko Kosen Hang-Xi Li Tahereh Abad Anuj Aggarwal Marco Caputo Jorge Fernández-Pendás Akshay Gaikwad Leif Grönberg Andreas Nylander Robert Rehammar Marcus Rommel Olga I Yuzephovich Anton Frisk Kockum Joonas Govenius Giovanna Tancredi Jonas Bylander |
| author_sort | Christian Križan |
| collection | DOAJ |
| description | It is advantageous for any quantum processor to support different classes of two-qubit quantum logic gates when compiling quantum circuits, a property that is typically not present in existing platforms. In particular, access to a gate set that includes support for the CZ-, iSWAP-, and SWAP-type families of gates renders conversions between these gate families unnecessary during compilation, as any two-qubit Clifford gate can be executed using at most one two-qubit gate from this set, plus additional single-qubit gates. We experimentally demonstrate that a SWAP gate can be decomposed into one iSWAP gate followed by one CZ gate, affirming a more efficient compilation strategy over the conventional approach that relies on three iSWAP or three CZ gates to replace a SWAP gate. Our implementation makes use of a superconducting quantum processor design based on fixed-frequency transmon qubits coupled together by a parametrically modulated tunable transmon coupler, extending this platform’s native gate set so that any two-qubit Clifford unitary matrix can be realized using no more than two two-qubit gates and single-qubit gates. |
| format | Article |
| id | doaj-art-40b07f2a7a784a13a88325d96d4a2601 |
| institution | DOAJ |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-40b07f2a7a784a13a88325d96d4a26012025-08-20T02:50:41ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127707450710.1088/1367-2630/adeba7Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architectureChristian Križan0https://orcid.org/0000-0002-5059-7998Janka Biznárová1https://orcid.org/0000-0002-8887-8816Liangyu Chen2https://orcid.org/0000-0002-5072-2445Emil Hogedal3https://orcid.org/0009-0008-1447-5484Amr Osman4https://orcid.org/0000-0002-0290-1000Christopher W Warren5https://orcid.org/0000-0001-6195-2708Sandoko Kosen6https://orcid.org/0000-0001-9560-9932Hang-Xi Li7https://orcid.org/0000-0002-2578-306XTahereh Abad8https://orcid.org/0000-0002-6277-3477Anuj Aggarwal9Marco Caputo10https://orcid.org/0009-0006-1321-1108Jorge Fernández-Pendás11https://orcid.org/0000-0003-3814-9364Akshay Gaikwad12https://orcid.org/0009-0001-2243-6185Leif Grönberg13https://orcid.org/0000-0002-9102-976XAndreas Nylander14https://orcid.org/0000-0002-9724-1892Robert Rehammar15https://orcid.org/0000-0001-8167-3810Marcus Rommel16https://orcid.org/0000-0002-3026-3907Olga I Yuzephovich17https://orcid.org/0009-0003-3039-5103Anton Frisk Kockum18https://orcid.org/0000-0002-2534-3021Joonas Govenius19https://orcid.org/0000-0002-7208-9556Giovanna Tancredi20https://orcid.org/0000-0002-3628-8398Jonas Bylander21https://orcid.org/0000-0003-4521-710XDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenVTT Technical Research Centre of Finland Ltd, QTF Centre of Excellence , Espoo FI-02044 VTT, FinlandDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenVTT Technical Research Centre of Finland Ltd, QTF Centre of Excellence , Espoo FI-02044 VTT, FinlandDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenVTT Technical Research Centre of Finland Ltd, QTF Centre of Excellence , Espoo FI-02044 VTT, FinlandDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenDepartment of Microtechnology and Nanoscience, Chalmers University of Technology , SE-412 96 Gothenburg, SwedenIt is advantageous for any quantum processor to support different classes of two-qubit quantum logic gates when compiling quantum circuits, a property that is typically not present in existing platforms. In particular, access to a gate set that includes support for the CZ-, iSWAP-, and SWAP-type families of gates renders conversions between these gate families unnecessary during compilation, as any two-qubit Clifford gate can be executed using at most one two-qubit gate from this set, plus additional single-qubit gates. We experimentally demonstrate that a SWAP gate can be decomposed into one iSWAP gate followed by one CZ gate, affirming a more efficient compilation strategy over the conventional approach that relies on three iSWAP or three CZ gates to replace a SWAP gate. Our implementation makes use of a superconducting quantum processor design based on fixed-frequency transmon qubits coupled together by a parametrically modulated tunable transmon coupler, extending this platform’s native gate set so that any two-qubit Clifford unitary matrix can be realized using no more than two two-qubit gates and single-qubit gates.https://doi.org/10.1088/1367-2630/adeba7superconducting microwave devicesquantum information sciencequbit |
| spellingShingle | Christian Križan Janka Biznárová Liangyu Chen Emil Hogedal Amr Osman Christopher W Warren Sandoko Kosen Hang-Xi Li Tahereh Abad Anuj Aggarwal Marco Caputo Jorge Fernández-Pendás Akshay Gaikwad Leif Grönberg Andreas Nylander Robert Rehammar Marcus Rommel Olga I Yuzephovich Anton Frisk Kockum Joonas Govenius Giovanna Tancredi Jonas Bylander Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture New Journal of Physics superconducting microwave devices quantum information science qubit |
| title | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture |
| title_full | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture |
| title_fullStr | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture |
| title_full_unstemmed | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture |
| title_short | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture |
| title_sort | quantum swap gate realized with cz and iswap gates in a superconducting architecture |
| topic | superconducting microwave devices quantum information science qubit |
| url | https://doi.org/10.1088/1367-2630/adeba7 |
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