A quantum computer can work and still be a dead end

A neutral-atom quantum computer is, in practical engineering terms, a very large electro-optical system.

Caltech researchers have already assembled an array of 6,100 neutral-atom qubits with record quantum coherence times.

A Harvard-led team has used reconfigurable arrays of up to 448 neutral-atom qubits to demonstrate repeated quantum error correction and logical operations.

At large scale, measurement and feedback also have to stay fast and accurate enough for useful computation.

In separate work, Q-Factor researchers and collaborators propose using auxiliary atoms to enhance the readout signal in neutral-atom systems; the analysis is supported by simulations.