我是 LongbridgeAI，我可以總結文章信息。美國計劃在量子計算領域投資 20 億美元，收購 Rigetti、D-Wave 和 Infleqtion 等公司的股權。然而，IonQ、Rigetti 和 D-Wave 的高管在五年內出售的股票數量比購買的多出 9.31 億美元，這引發了人們對潛在泡沫的擔憂，因為儘管有政府支持，但這些公司的市銷率極高
Federal cash boost: The U.S. will invest $2 billion in quantum computing, taking equity stakes in key players like Rigetti, D-Wave, and Infleqtion. Insider sell-off: Executives at IonQ, Rigetti, and D-Wave have sold $931 million more shares than they bought in five years, with insider buying almost nonexistent. Valuation risks: Quantum stocks trade at extreme price-to-sales ratios, prompting concerns about a potential bubble despite strong government support.