SU(4) gate design via unitary process tomography: its application to cross-resonance based superconducting quantum devices
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916650831314944 |
|---|---|
| author | Sugawara, Michihiko Satoh, Takahiko |
| author_facet | Sugawara, Michihiko Satoh, Takahiko |
| contents | We present a novel approach for implementing pulse-efficient SU(4) gates on cross resonance (CR)-based superconducting quantum devices. Our method introduces a parameterized unitary derived from the CR-Hamiltonian propagator, which accounts for static-$ZZ$ interactions. Leveraging the Weyl chamber's geometric structure, we successfully realize a continuous 2-qubit basis gate, $R_{ZZ}(θ)$, as an echo-free pulse schedule on the IBM Quantum device ibm_kawasaki. We evaluate the average fidelity and gate time of various SU(4) gates generated using the $R_{ZZ}(θ)$ to confirm the advantages of our implementation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_09343 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | SU(4) gate design via unitary process tomography: its application to cross-resonance based superconducting quantum devices Sugawara, Michihiko Satoh, Takahiko Quantum Physics We present a novel approach for implementing pulse-efficient SU(4) gates on cross resonance (CR)-based superconducting quantum devices. Our method introduces a parameterized unitary derived from the CR-Hamiltonian propagator, which accounts for static-$ZZ$ interactions. Leveraging the Weyl chamber's geometric structure, we successfully realize a continuous 2-qubit basis gate, $R_{ZZ}(θ)$, as an echo-free pulse schedule on the IBM Quantum device ibm_kawasaki. We evaluate the average fidelity and gate time of various SU(4) gates generated using the $R_{ZZ}(θ)$ to confirm the advantages of our implementation. |
| title | SU(4) gate design via unitary process tomography: its application to cross-resonance based superconducting quantum devices |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2503.09343 |