Researchers from IBM, RWTH Aachen University in Germany and Los Angeles-based startup Quantum Elements have achieved a new record for qubit fidelity in superconducting quantum computer systems. The researchers used IBM's 127-qubit Kyiv and Marrakesh processors, which use a combination of "physical qubits" and "logical qubits," groups of entangled physical qubits that store the same information in different places. However, this setup is weak against "logistic errors," which occur when multiple physical qubit failures occur. The team developed a hybrid approach to deal with this type of noise, suppressing crosstalk errors before they occur, reducing the number of undetectable logical errors. They achieved 98.05% peak encoding fidelity and maintained 84.87% fidelity after 55 microseconds. The longer this level of high fidelity can be maintained, the more useful quantum computers we can expect.