Ions Entangled Using Microwaves

In what is claimed to be a major breakthrough, ions have been trapped and entangled using microwaves for the first time. Supposedly, this is significant because one can deal with microwaves in electrical circuits, and certainly easier than using optical frequency lasers.

Two independent groups of physicists have made important breakthroughs in the control of quantum computers based on trapped ions. Instead of controlling quantum bits (qubits) using multiple laser beams, the teams have used microwave sources, which are much easier to control and integrate within quantum circuits. The work could lead to practical quantum computers that incorporate large numbers of qubits on a single chip.

Progress is often made in small steps. This is another example of it.

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