The team used timed pulses and a form of synthetic light to reduce errors and improve the accuracy of their quantum computer.
Researchers at MIT have developed two new control techniques that have enabled them to achieve a world-record single-qubit fidelity of 99.998 percent using a superconducting qubit called fluxonium.
This breakthrough marks a significant step towards the realization of practical quantum computing.
Qubits, the building blocks of quantum computers, are highly susceptible to noise and control imperfections.
“This introduces errors into the quantum operations and ultimately limits the complexity and duration of a quantum algorithm,” said the researchers.
To overcome this challenge, the MIT team focused on improving qubit performance by mitigating counter-rotating errors that arise during fast quantum operations.
“Getting rid of these errors was a fun challenge for us,” said David Rower, PhD ’24, a recent physics postdoc at MIT.
https://interestingengineering.com/science/99-998-fidelity-in-quantum-computing-by-mit
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