US quantum computer demonstrates 99.9975% fidelity, paves the way for a fault-tolerant future Helios is a 98-qubit quantum computer with 50 logical qubits and houses the world’s fastest GPU too. Helios, a US-based quantum computer, demonstrated 99.9975% fidelity in one-qubit operations, while maintaining 99.921% for two-qubit operations. This is the highest fidelity for any commercial quantum computer in the industry, paving the way for a future with fault-tolerant quantum computers. Considered to be the next frontier of computing, the race to build reliable quantum computers is on. Research institutes and national laboratories in countries like the US, UK and China are engaged in building the necessary support for quantum computer startups to build the future of computing. The superior computing capacities of quantum computers arise from quantum bits or qubits, which can store multiple values between 0 and 1 at once. However, the same qubits are also easily disturbed, introducing errors into computations. Scientists are therefore working to develop fault-tolerant computers that deliver high fidelity, i.e., a measure of how close the quantum operation is to the value of the expected operation. Helios’ highest fidelity Quantinuum’s Helios is a 98-qubit quantum computer with 50 logical qubits. Built using trapped-ion qubits, the system also integrates photonics, allowing data transfer at the speed of light through the microscopic optical channels. This system design has dual benefits. It helps reduce risks to quantum computing data while significantly decreasing its power consumption. Helios’ power consumption is as little as 40 kW, even though it is equipped with the world’s fastest GPUs. In a recent paper, Quantinuum confirmed record fidelity for its one-qubit and two-qubit operations, reaching a record of sorts when it comes to two-qubit fidelity in the quantum computing industry. Helios is the company’s most reliable quantum computer to date and is available