Quantum Computing Inc. (QCi) is an integrated photonics and quantum optics technology company based in Hoboken, New Jersey. The company develops and manufactures room-temperature, low-power quantum machines and photonic solutions for high-performance computing, artificial intelligence, cybersecurity, and remote sensing. QCi's core offerings include its Entropy Quantum Computer (EQC), photonic reservoir computing platforms, and foundry services for thin-film lithium niobate (TFLN) chips. Following its 2022 acquisition of QPhoton, the company transitioned from a quantum software developer to a full-stack quantum hardware manufacturer. QCi operates facilities across multiple U.S. states, including a TFLN chip foundry, and serves commercial, government, and research clients seeking accessible quantum and photonic technologies.