Over the past four decades, classical computers and classical communication networks have improved dramatically thanks to the ability to mass-produce tiny electronic components on individual silicon wafers. Quantum technologies could make similar strides, but it has been difficult to achieve the same parallel production for quantum memories—devices that help link quantum systems. Now Daniel Riedel of IonQ in Maryland and his colleagues have demonstrated a way to create multiple diamond-based quantum memory chips in parallel on a single silicon wafer [1].
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