An array of 6100 ultracold caesium atoms controlled by lasers is the largest collection of qubits ever assembled, and researchers hope they can soon turn it into the world's most advanced quantum computer
A device with more than 6000 quantum bits, or qubits, has smashed a previously-held record and is the first step towards building the largest quantum computer yet. There is currently no single, consensus design for building a quantum computer, but researchers believe that for these devices to be useful, they will have to compriseand controlled by laser beams, with all 6100 of them arranged in a neat grid.
The researchers designed the qubits to have properties exceptionally suitable for use in computations, says Manetsch, although they haven’t yet performed any.and longer runtimes for an eventual quantum computer. The team has also tested how well the lasers can move qubits between different parts of the array, which will be an important part of running computations, says team memberat the University of Wisconsin-Madison says that the new experiment is encouraging as proof that neutral atom quantum computers can be made very large, but more experimental tests need to be done before the team’s setup could be considered a full-fledged quantum computer. The researchers are now starting to explore the best ways to get their qubits to run computations, and do so in an
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