Today, IBM unveiled two new quantum computers. The bigger of the two, dubbed Condor, is the second ever to have a total number of quantum bits, or qubits, in the quadruple digits. IBM's other new quantum computer is called Heron, and it is the company's least error-prone device to date.
Researchers disagree on how to best build a quantum computer, but there is broad consensus that quantum computers will eventually be able to solve problems that are impossible even for the most powerful conventional computers. While Atom Computing, the company behind the current largest quantum computer, and IBM have now developed similarly-sized devices, their qubits are built differently. Atom Computing's relies on qubits made from neutral atoms, while IBM bases its qubits on tiny circuits that conduct electricity without any resistance.
In 2022, IBM broke the record for the largest quantum computer with a 433-qubit device. Engineers made it work by improving the way its qubits were controlled. Jay Gambetta at IBM says the team had to overcome similar technical challenges to build Condor.
From New Scientist
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