IBM Quantum Computers Achieve 99% Fidelity in Basic Circuits

IBM’s quantum computing platform, IBM Quantum, has made significant strides in reducing quantum noise, achieving a state fidelity of approximately 99% in basic circuits. This platform allows users to design, simulate, and execute quantum circuits on real quantum hardware with up to 156 qubits. The study focused on measuring quantum noise by running simple quantum computations. For instance, a single qubit circuit without any gate operations showed a 0.3% error rate, with a fidelity estimate of 0.9966 ± 0.0005. When a single X gate was applied, the fidelity slightly decreased to around 99.1%. More complex circuits, like those involving multiple gates or qubits, exhibited lower fidelities, with a 3-qubit circuit achieving a fidelity lower bound of 0.9583 ± 0.0016. These results highlight the ongoing challenge of managing error rates in quantum computing, even as IBM continues to push the boundaries of what quantum systems can achieve.

Source: towardsdatascience.com