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Long Live the Qubit!

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Superconducting circuit

A superconducting circuit (small square, center) fits snugly into a housing that enables it to receive electrical signals inside a cooling tank.

Melanie Gonick

A quantum computer is a device—still largely theoretical—that could perform some types of calculations much more rapidly than classical computers. While a bit in a classical computer can represent either 0 or 1, a quantum bit, or qubit, can be in "superposition," representing 0 and 1 at the same time. In experiments, however, keeping qubits in superposition long enough to do anything useful with them has proven very hard.

From MIT News Office
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