US EditionIBM says 'Loon' chip shows path to useful quantum computers by 2029
IBM's Nighthawk chip may outperform classical computers on specific tasks by next year, advancing efforts to overcome quantum error challenges, IBM said.
- On Wednesday, IBM announced Loon, an experimental quantum chip marking a key milestone, and unveiled Nighthawk, which it said will be available this year.
- Facing persistent errors, IBM adapted an error-correction algorithm from cellphone signals to run on hybrid quantum and classical chips, addressing challenges also faced by Alphabet's Google and Amazon.
- Loon's architecture links each qubit to six others with vertical connections, while Nighthawk's four-way connectivity enables 30 per cent more complex programs but raises engineering challenges, Gartner's Horvath said.
- Loon remains in early testing with no timeline for external testers, and IBM's research team will use upcoming tests of Loon and Nighthawk to develop the planned modular quantum computer, focusing on coherence time and readout improvements recently.
- If connectivity scales, IBM's connectivity approach could form smaller logical qubits groups, boosting power and enabling future quantum applications beyond classical computers.
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