Communication & Quantum

Photonics plays a central role in quantum technologies, from quantum computing and sensing to secure quantum communications. High-performance lasers enable the cooling, trapping, and manipulation of optical qubits by selecting precise atomic transitions. IDIL offers two solutions for quantum optical manipulations: delay line interferometer modules integrating custom optical components for immediate deployment, or individual fiber optic components such as fiber stretchers, optical delay lines, time delay coils, couplers for custom integration by research teams.

• Fiber stretcher & Piezo driver enable phase control to fine-tune interference in photonic quantum circuits (interferometers, linear logic gates) and maintain coherence. They also  provide stabilization to compensate for rapid temperature fluctuations or vibrations that alter effective fiber length.
• Optical Delay Lines (ODLs) are used for photon synchronization, temporally aligning photons from different sources or those that have different paths. Like fiber stretchers, they provide stabilization to compensate for slow thermal drifts. In some quantum architectures, ODLs enable sequential photon injection into fiber loops, allowing for the progressive construction of complex entangled states in multiphoton systems.
• Time delay coils provide precise, temperature-controlled fixed delays for quantum synchronization and calibration. They deliver stable optical path lengths essential for multi-node quantum networks and serve as temporal references for quantum computing systems.

2D fiber arrays designed and manufactured by IDIL enable trapping and interrogating atom arrays for quantum applications.

Variable Optical Attenuators (VOAs) enable precise control of optical power levels in quantum systems, essential for calibrating single-photon sources, balancing multi-channel quantum networks, and preventing detector saturation. They provide the dynamic range control needed for characterizing quantum devices and optimizing signal-to-noise ratios in photonic quantum circuits.

IDIL is part of the European collaborative project AQLAS which aim to revolutionize quantum technologies by industrializing ultra-precise laser modules. This laser will enable precise quantum control by supporting critical processes such as cooling, manipulation, and detection of qubits. It offers a performance advantage, being 4 to 10 times smaller and 2 to 5 times more affordable than existing systems.

For quantum optical applications and high-resolution spectroscopy, laser source selection is dictated by three key parameters: linewidth, wavelength stability, and mode-hopping-free scanning capability. High power External Cavity Diode Lasers (ECDLs) provide fine tuning and extremely narrow linewidths—essential properties for atomic transition locking and cooling-trapping experiments. Distributed Feedback Lasers (DFBs), on the other hand, offer a compact and robust single-mode solution, ideal for compact systems and field instruments. For high-power diodes, Volume Bragg Grating (VBG) stabilization reconciles power and spectral quality by reducing linewidth and improving thermal stability. IDIL by Fiber Optics Group distributes Sacher Lasertechnics solutions (Micron Laser, High Power ECDL, and Motorized ECDL) that incorporate these principles: ECDL architectures for low linewidth and wide tuning, and stabilized high-power options for demanding pumping and spectroscopy requirements.

Our partner SEDI-ATI, a member of Fiber Optics Group, offers a broad range of fiber optic feedthroughs designed for cryogenic, high-vacuum quantum environments. These feedthroughs mount directly onto cryostat enclosures, providing reliable optical signal transmission between room temperature and ultra-cold quantum processors while preserving integrity and thermal isolation critical for quantum system operation. They are available in both bulkhead and pigtail configurations. For greater fiber optic density, we have designed specialized MTP-based fiber optic feedthroughs (12 to 24 fibers).

Innovative optical fibers such as low-latency hollow-core cables save critical nanoseconds in telecom networks, financial trading, data centers, 5G mobile networks, cloud computing, and quantum communication. IDIL applies its deep expertise in specialty fiber connectorization to support fiber manufacturers and users working with with hollow-core fibers, multi-cores fibers, photonics crystal fibers, and other advanced fiber types.

We deliver both customized OEM solutions tailored to partners’ specifications and ready-to-sell product ranges including launch fibers for OTDR applications. These turnkey offerings combine manufacturing flexibility, stringent quality control, and immediate market availability.