Building quantum registers from imperfect crystals

Chris Lee at Ars explains some new research that could fill in a critical piece needed for a practical quantum computer, a way of storing multiple qubits similar to a register in a classical computer so more sophisticated computation and communication can be realized. Lee does his usual excellent job of making what can be a pretty opaque topic very readable, especially how this likely informs future applications.

Photons store themselves in ions that bob up and down in a sea of light.

Source: Crystal stacks up qubits in first-in first-out memory | Ars Technica

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