Gateway Quantum Electronics is a company based in St. Louis, MO, USA, specializing in building hardware for quantum noise-limited amplifiers. Their focus is on simplifying the operation of quantum amplifiers to accelerate advancements in quantum computing and sensing. The company offers Quantum Amplifiers, Quantum Amplifier Control Hardware, and Cryogenic Filters. Gateway Quantum Electronics aims to contribute to the revolution in quantum technology by providing innovative solutions for quantum computing and sensing applications.