MQS is a dynamic French SME, and the first company in the world to design, produce and commercialize quantum sensors based on cold atoms. Muquans is a spin-off from theInstitut d’Optique (France) and Observatoire de Paris (LNE-SYRTE, France), where the core technology of its products has been developed for more than 15 years. Especially active in the fields of time/frequency, MQS is used to supporting ambitious research activities involving high-precision measurement. The company has developed a unique scientific and technological expertise for everything related to the high-resolution control of an optical phase and its product portfolio is currently composed of an absolute quantum gravimeter, a high-performance atomic clock, and frequency-controlled research-grade laser systems dedicated to quantum physics experiments. MQS employs 22 scientists, engineers and technicians (about 10 PhD students, 10 technicians). They combine deep skills over a wide range of competencies: quantum physics, lasers & optics, electronics & micro-wave, opto- mechanics, real-time software and signal processing. MQS also supports other FET-open calls and European Joint Research Programmes.