IBM quantum computers with 20 superconducting qubits will soon be available for online use by the firm’s clients – according to the US-based company. The quantum systems will be running by the end of 2017 and IBM also says that it has built and tested a prototype quantum computer with 50 qubits.
Part of the IBM Q family of quantum computers, the new systems are based on transmon qubits. These store quantum information in terms of the presence or absence of Cooper pairs of electrons on small pieces of superconductor. IBM launched its first web-accessible quantum computer in 2016 and today the public can use 5- and 16-qubit systems through the IBM Q Experience programme.
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