A light has emerged at the end of the tunnel in the long pursuit of developing quantum computers, which are expected to radically reduce the time needed to perform some complex calculations from thousands of years down to a matter of hours.

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Stanford physicists developed a new optical cavity platform using microlenses that can efficiently collect single photons from individual atoms acting as qubits. The team demonstrated a 40-cavity array with 40 atom qubits and a prototype with over 500 cavities, enabling parallel quantum information readout for the first time. This breakthrough addresses a key scaling challenge by allowing each atom in a quantum computer to have its own cavity, paving the way toward million-qubit quantum computer networks. The technology could enable quantum data centers where individual quantum computers network together into supercomputers, with applications in drug discovery, cryptography, biosensing, and astronomical observation.

New light-based platform sets the stage for future quantum supercomputers