# High-contrast ZZ interaction using multi-type superconducting qubits

@inproceedings{Zhao2020HighcontrastZI, title={High-contrast ZZ interaction using multi-type superconducting qubits}, author={Peng Zhao and P. Xu and D. Lan and X. Tan and Haifeng Yu and Yang Yu}, year={2020} }

For building a scalable quantum processor with superconducting qubits, the ZZ interaction is of great concert because of relevant for implementing two-qubit gates, and the close contact between gate infidelity and its residual. Two-qubit gates with fidelity beyond fault-tolerant thresholds have been demonstrated using the ZZ interaction. However, as the performance of quantum processor improves, the residual static-ZZ can also become a performance-limiting factor for quantum gate operations and… Expand

#### 4 Citations

Quantum crosstalk cancellation for fast entangling gates and improved multi-qubit performance

- Physics
- 2021

Quantum computers built with superconducting artificial atoms already stretch the limits of their classical counterparts. While the lowest energy states of these artificial atoms serve as the qubit… Expand

Demonstration of a High-Fidelity CNOT for Fixed-Frequency Transmons with Engineered ZZ Suppression.

- Physics
- 2020

Improving two-qubit gate performance and suppressing crosstalk are major, but often competing, challenges to achieving scalable quantum computation. In particular, increasing the coupling to realize… Expand

Switchable Next-Nearest-Neighbor Coupling for Controlled Two-Qubit Operations

- Computer Science, Physics
- 2020

Depending on the adopted activating scheme, various controlled two-qubit operations such as controlled-iSWAP gate can be realized, potentially enabling circuit depth reductions as to a standard decomposition approach for implementing generic quantum algorithms. Expand

Simple implementation of high fidelity controlled-
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- Physics, Computer Science
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A quantum circuit for probabilistic exponentiating the i-swap gate and other non-Hermitian gates is presented and an implementation of the gates using superconducting circuits is discussed. Expand

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