Rough and ready quantum memory may link disparate quantum systems

Image of CMOS RAM chips.

Enlarge / Whatever format
quantum memory takes, it’s not going to look like this. (credit:

Matthew Dillon
)

I’m a simple person. To me, a computer consists of three
parts: data that goes in and out, operations that modify the data,
and storage that holds the data. It is no different for quantum
computing, though all three parts of the solution are still
undefined: no one is exactly sure of what medium is best to
represent and transport data.
Different ways
to
encode operations
are being
fought over.

We’re probably the furthest from having a solution when it comes
to memory. But a new laser-hammer
approach
to storing qubits might be a step forward.

Screwdrivers for atomic physicists

In a quantum network, quantum information (or qubits) will be
transported
using light
—single photons of light hold a qubit. But that
means you also need a way to store photons, which are famous for
moving very fast. One option is to store the qubit in the quantum
state of a very cold gas; this works, provided you can emit the
qubit as a photon later on.

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Source: FS – All – Science – News
Rough and ready quantum memory may link disparate quantum systems