Benchmarking the noise sensitivity of different parametric two-qubit gates in a single superconducting quantum computing platform
M. Ganzhorn, G. Salis, D. J. Egger, A. Fuhrer, M. Mergenthaler, C. Müller, P. Müller, S. Paredes, M. Pechal, M. Werninghaus, S. Filipp
DOI 10.1103/PhysRevResearch.2.033447 · Physical Review Research
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The possibility to utilize different types of two-qubit gates on a single quantum computing platform adds flexibility in the decomposition of quantum algorithms. A larger hardware-native gate set may decrease the number of required gates, provided that all gates are realized with high fidelity. Here, we benchmark both controlled-Z (CZ) and exchange-type (iSWAP) gates using a parametrically driven tunable coupler that mediates the interaction between two superconducting qubits. Using randomized benchmarking protocols we estimate an error per gate of 0.9±0.03 and 1.3±0.4% for the CZ and the iSWAP gate, respectively. We argue that spurious ZZ-type couplings are the dominant error source for the iSWAP gate, and that phase stability of all microwave drives is of utmost importance. Such differences in the achievable fidelities for different two-qubit gates have to be taken into account when mapping quantum algorithms to real hardware.
Similar papers
Analysis of a parametrically driven exchange-type gate and a two-photon excitation gate between superconducting qubits
similarity 0.93Marco Roth et al.
Source status unknown — claims are unverified
High-Fidelity, High-Scalability Two-Qubit Gate Scheme for Superconducting Qubits
similarity 0.92Yuan Xu et al.
Source status unknown — claims are unverified
All-Microwave Manipulation of Superconducting Qubits with a Fixed-Frequency Transmon Coupler
similarity 0.90Shotaro Shirai et al.
Source status unknown — claims are unverified
Fragility of gate-error metrics in simulation models of flux-tunable transmon quantum computers
similarity 0.90H. Lagemann et al.
Source status unknown — claims are unverified
Controlled-Controlled-Phase Gates for Superconducting Qubits Mediated by a Shared Tunable Coupler
similarity 0.90Niklas J. Glaser et al.
Source status unknown — claims are unverified
Implementation of a Quantum Addressable Router Using Superconducting Qubits
similarity 0.89Connie Miao et al.
Source status unknown — claims are unverified