Tianyan: Cloud services with quantum advantage

TL;DR

Tianyan is a cloud platform offering quantum computing services with a 105-qubit superconducting processor, demonstrating quantum advantage by outperforming classical supercomputers in specific sampling tasks.

Contribution

The paper introduces Tianyan, a cloud-based quantum computing platform with a superconducting processor achieving quantum advantage in practical sampling tasks.

Findings

105-qubit superconducting processor with high fidelities

Completes 74-qubit random circuit sampling in 18.4 minutes

Outperforms classical supercomputers by a factor of over 600 million in specific tasks

Abstract

Tianyan Quantum Cloud Platform offers cloud services demonstrating quantum advantage capabilities with a Zuchongzhi 3.0-like superconducting quantum processor. This cloud-accessible superconducting quantum prototype, named Tianyan-287, features 105 qubits and achieves high operational fidelities, with single-qubit gates, two-qubit gates, and readout fidelity at 99.90%, 99.56%, 98.7%, respectively. For a specific benchmark task involving random circuit sampling on a 74-qubit system over 24 cycles, the platform completes one million samples in just 18.4 minutes. In contrast, state-of-the-art classical supercomputers would require approximately 16,000 years to complete the equivalent calculation. To facilitate this, the platform provides access via Cqlib, an open-source SDK designed for working with quantum systems at the level of extended quantum circuits, operators, and primitives. The cloud service aims to democratize access to high-performance quantum hardware, enabling the community to validate and explore practical quantum advantages.