Experimental implementation of non-Clifford interleaved randomized benchmarking with a controlled-S gate
| Autor: | Garion, Shelly, Kanazawa, Naoki, Landa, Haggai, McKay, David C., Sheldon, Sarah, Cross, Andrew W., Wood, Christopher J. |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. Research 3, 013204 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.3.013204 |
| Popis: | Hardware efficient transpilation of quantum circuits to a quantum devices native gateset is essential for the execution of quantum algorithms on noisy quantum computers. Typical quantum devices utilize a gateset with a single two-qubit Clifford entangling gate per pair of coupled qubits, however, in some applications access to a non-Clifford two-qubit gate can result in more optimal circuit decompositions and also allows more flexibility in optimizing over noise. We demonstrate calibration of a low error non-Clifford Controlled-$\frac{\pi}{2}$ phase (CS) gate on a cloud based IBM Quantum computing using the Qiskit Pulse framework. To measure the gate error of the calibrated CS gate we perform non-Clifford CNOT-Dihedral interleaved randomized benchmarking. We are able to obtain a gate error of $5.9(7) \times 10^{-3}$ at a gate length 263 ns, which is close to the coherence limit of the associated qubits, and lower error than the backends standard calibrated CNOT gate. Comment: 9 pages, 4 figures, references are updated, QPT curve in the Fig. 2 is updated based on new analysis procedure detailed in Appendix B. Conclusions unchanged |
| Databáze: | arXiv |
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