Miraex SA

Miraex SA is a Switzerland-based quantum photonics company focused on thin-film lithium tantalate photonic integrated circuits. Its website says these circuits convert quantum information between microwave and optical light, positioning the company as an interconnect layer linking quantum processors, sensors, and networks. The company highlights applications in distributed quantum computing, quantum sensing, and quantum networking.

The core platform is described as traveling-wave electro-optic transduction across microwave and optical domains, with compatibility alongside superconducting processors. Miraex says its technology supports quantum repeaters, QKD, and distributed sensing, and it names its TFLT PIC platform as the basis beneath these verticals.

According to the company, Miraex was founded at EPFL Innovation Park in Ecublens, Switzerland, raised more than $6 million before its acquisition, and received a CHF 2.4 million Innosuisse grant in June 2023. In June 2026, SEALSQ acquired the company, and Miraex is now presented as part of SEALSQ's quantum sovereign stack.