High-dimensional quantum states are known to offer advantages over their two-dimensional qubit counterparts,but their preparation and manipulation has been bulky and cumbersome.Now,quantum state control has been demonstrated on-chip with a～1 μm2 footprint and nm-scale features,producing up to eight-dimensional quantum states and ushering in a new route to large quantum information encoding on a small footprint.
Fazilah Nothlawala、Andrew Forbes
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School of Physics,University of the Witwatersrand,Johannesburg,South Africa
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