A quantum drum that stores quantum states for record-long times

Quantum computing:

Researchers at the Niels Bohr Institute, University of Copenhagen, have improved the coherence time of a previously developed quantum membrane dramatically. The improvement will expand the usability of the membrane for a variety of different purposes. With a coherence time of one hundred milliseconds, the membrane can for example store sensitive quantum information for further processing in a quantum computer or network. The result has now been published in Nature Portfolio.

The quantum drum is now connected to a read-out unit

As a first step, the team of researchers has combined the membrane with a superconducting microwave circuit, which enables precise readouts from the membrane. That is, it has become “plugged in”, as required for virtually any application. With this development, the membrane can be connected to various other devices that process or transmit quantum information…