Resonant two-qubit gates for fermionic simulations with spin qubits
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866913948627894272 |
|---|---|
| author | Tsoukalas, Konstantinos Orekhov, Alexei Hetényi, Bence von Lüpke, Uwe Arunseangroj, Jeth Seidler, Inga Sommer, Lisa Kelly, Eoin G. Massai, Leonardo Aldeghi, Michele Pita-Vidal, Marta Bedell, Stephen W. Paredes, Stephan Schupp, Felix J. Mergenthaler, Matthias Salis, Gian Fuhrer, Andreas Harvey-Collard, Patrick |
| author_facet | Tsoukalas, Konstantinos Orekhov, Alexei Hetényi, Bence von Lüpke, Uwe Arunseangroj, Jeth Seidler, Inga Sommer, Lisa Kelly, Eoin G. Massai, Leonardo Aldeghi, Michele Pita-Vidal, Marta Bedell, Stephen W. Paredes, Stephan Schupp, Felix J. Mergenthaler, Matthias Salis, Gian Fuhrer, Andreas Harvey-Collard, Patrick |
| contents | In gate-defined semiconductor spin qubits, the highly tunable Heisenberg exchange interaction is leveraged to implement fermionic two-qubit gates such as CZ and SWAP. However, the broader family of fermionic simulation (fSim) gates remains unexplored, and has the potential to enhance the performance of near-term quantum simulation algorithms. Here, we demonstrate a method to implement the fSim gate set in spin qubits using a single pulse combining baseband and resonant exchange drives. This approach minimizes gate duration and drive amplitude, mitigating decoherence and crosstalk. We validate its effectiveness by realizing a resonant iSWAP gate between two hole spins in germanium, achieving a fidelity of 93.8(5)% extracted with interleaved randomized benchmarking. Quantum process tomography confirms accurate gate calibration and identifies qubit decoherence as the dominant error source. Our results establish a practical route toward a versatile and efficient two-qubit gate set for spin-based quantum processors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_13781 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Resonant two-qubit gates for fermionic simulations with spin qubits Tsoukalas, Konstantinos Orekhov, Alexei Hetényi, Bence von Lüpke, Uwe Arunseangroj, Jeth Seidler, Inga Sommer, Lisa Kelly, Eoin G. Massai, Leonardo Aldeghi, Michele Pita-Vidal, Marta Bedell, Stephen W. Paredes, Stephan Schupp, Felix J. Mergenthaler, Matthias Salis, Gian Fuhrer, Andreas Harvey-Collard, Patrick Mesoscale and Nanoscale Physics Quantum Physics In gate-defined semiconductor spin qubits, the highly tunable Heisenberg exchange interaction is leveraged to implement fermionic two-qubit gates such as CZ and SWAP. However, the broader family of fermionic simulation (fSim) gates remains unexplored, and has the potential to enhance the performance of near-term quantum simulation algorithms. Here, we demonstrate a method to implement the fSim gate set in spin qubits using a single pulse combining baseband and resonant exchange drives. This approach minimizes gate duration and drive amplitude, mitigating decoherence and crosstalk. We validate its effectiveness by realizing a resonant iSWAP gate between two hole spins in germanium, achieving a fidelity of 93.8(5)% extracted with interleaved randomized benchmarking. Quantum process tomography confirms accurate gate calibration and identifies qubit decoherence as the dominant error source. Our results establish a practical route toward a versatile and efficient two-qubit gate set for spin-based quantum processors. |
| title | Resonant two-qubit gates for fermionic simulations with spin qubits |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2507.13781 |