Now part of SEALSQQuantum Sovereign Stack
The quantum interconnect layer of the sovereign quantum era.
Miraex builds thin-film lithium tantalate photonic integrated circuits that convert quantum information between microwave and optical light — the connective tissue linking quantum processors, sensors and networks into one coherent infrastructure.
MHz–100GHz+
conversion bandwidth
10⁴
microwave↔optical energy gap bridged
3
quantum verticals
EPFL
Innovation Park, CH
Scroll
Our area of expertise
Connecting quantum resources across
frequency, distance and modality
Photonic integrated circuits deliver a genuine quantum advantage through interconnectivity and entanglement — the foundation distributed sensing, computing and networks are built on.
The core capability
Microwave in. Optical out.
A bridge across five orders of magnitude.
The energies of stationary qubits (microwave photons) and flying qubits (optical photons) differ by roughly 10⁴. Miraex's traveling-wave electro-optic transducers convert coherently between the two domains — without which distributed quantum architectures cannot function at scale.
High-efficiency direct electro-optic transduction, MHz to beyond 100 GHz
Cryogenic & quantum-device compatible — operates alongside superconducting processors
Ultra-low-noise microwave detection to ~hundreds of photons
Entanglement generated between the microwave and optical domains
Where Miraex sits
The Root-to-Qubit stack
SEALSQ assembled a sovereign, end-to-end quantum architecture — from post-quantum silicon to orbit. Miraex closes the layer that makes it whole: the quantum interconnect.
05
Orbital infrastructure
Quantum-secure links across Low Earth Orbit — the Quantum Orbital Space Cloud (QOSC)
WISeSat · QOSC
04
Quantum networking & QKD
Entanglement distribution and key delivery at planetary scale
Quantum internet
03
Quantum interconnect — the missing link
TFLT PIC microwave-to-optical transduction bridging processors, sensors and networks
Miraex
02
Quantum processors
Qubit hardware that the interconnect links into collective compute
EeroQ · ColibriTD
01
Post-quantum silicon
Quantum-resistant secure microcontrollers & root of trust
SEALSQ QS7001
Root-to-Qubit is SEALSQ's architecture spanning quantum-resistant semiconductors to orbital infrastructure. Miraex completes the interconnect layer.
10
Photonics & quantum specialists
CHF 2.4M
Innosuisse innovation grant
EPFL
Innovation Park, Lake Geneva
LAES
SEALSQ-backed (NASDAQ)
Backed & recognised by
Latest news
Signals from the lab and the group
02 June 2026
The acquisition closes the quantum interconnect layer and anchors the Quantum Orbital Space Cloud.
07 April 2026
Thin-film lithium tantalate modulators developed with Prof. Villanueva's lab and Swiss partners.
26 February 2025
Selected from a record 200 applicants for the Venture Leaders Technology roadshow.
Let’s connect
Interested in our TFLT PIC platform for quantum interconnectivity?
Tell us about your processor, payload or network. We’ll route you to the right engineer — and, where it fits, to the wider SEALSQ quantum stack.