CANADA - 2025/04/23: In this photo illustration, the QCI (Quantum Computing) logo is seen displayed on a smartphone screen. (Photo Illustration by Thomas Fuller/SOPA Images/LightRocket via Getty Images)SOPA Images/LightRocket via Getty ImagesQuantum Computing Inc. (NASDAQ: QUBT), a firm that develops quantum-compatible chips and photonic hardware for high-performance computing, artificial intelligence, and cybersecurity, experienced a 7% decline in its stock on October 22 due to a broader retreat in quantum ...