Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture
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arXiv
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| Natura: | Preprint |
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2024
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| author | Križan, Christian Biznárová, Janka Chen, Liangyu Hogedal, Emil Osman, Amr Warren, Christopher W. Kosen, Sandoko Li, Hang-Xi Abad, Tahereh Aggarwal, Anuj Caputo, Marco Fernández-Pendás, Jorge Gaikwad, Akshay Grönberg, Leif Nylander, Andreas Rehammar, Robert Rommel, Marcus Yuzephovich, Olga I. Kockum, Anton Frisk Govenius, Joonas Tancredi, Giovanna Bylander, Jonas |
| author_facet | Križan, Christian Biznárová, Janka Chen, Liangyu Hogedal, Emil Osman, Amr Warren, Christopher W. Kosen, Sandoko Li, Hang-Xi Abad, Tahereh Aggarwal, Anuj Caputo, Marco Fernández-Pendás, Jorge Gaikwad, Akshay Grönberg, Leif Nylander, Andreas Rehammar, Robert Rommel, Marcus Yuzephovich, Olga I. Kockum, Anton Frisk Govenius, Joonas Tancredi, Giovanna Bylander, Jonas |
| contents | 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 seen with existing platforms. In particular, access to a gate set that includes support for the CZ-type, the iSWAP-type, and the 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 | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15022 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture Križan, Christian Biznárová, Janka Chen, Liangyu Hogedal, Emil Osman, Amr Warren, Christopher W. Kosen, Sandoko Li, Hang-Xi Abad, Tahereh Aggarwal, Anuj Caputo, Marco Fernández-Pendás, Jorge Gaikwad, Akshay Grönberg, Leif Nylander, Andreas Rehammar, Robert Rommel, Marcus Yuzephovich, Olga I. Kockum, Anton Frisk Govenius, Joonas Tancredi, Giovanna Bylander, Jonas Quantum Physics 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 seen with existing platforms. In particular, access to a gate set that includes support for the CZ-type, the iSWAP-type, and the 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. |
| title | Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2412.15022 |