A look at Rigetti Computing and D-Wave Quantum, whose shares have surged over 1,900% in the past year as the potential of quantum computing captivates investors (Felice Maranz/Bloomberg)

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Felice Maranz / Bloomberg:A look at Rigetti Computing and D-Wave Quantum, whose shares have surged over 1,900% in the past year as the potential of quantum computing captivates investors  —  Rigetti Computing Inc. and D-Wave Quantum Inc. make products that so far have few real world applications.