Satellite Quantum Networks

Our group is dedicated to making quantum technologies functional for satellite network applications, focusing on enhancing the capabilities and efficiency of communication systems in space. We specialize in the development and adaptation of quantum technologies specifically designed for communication in outer space, pushing the boundaries of what is currently possible in satellite technology. By offering consulting services to the space industry, we assist in creating and implementing quantum technologies within flight payloads on satellites, ensuring seamless integration and optimized performance.

In our pursuit to advance secure communication, we study new quantum communication protocols aimed at enhancing the security of information in intersatellite communication. Our research delves into innovative protocols for both intersatellite and ground-satellite quantum communication, including Prepare Measurement, Measurement-independent QKD, frame-independent QKD, twin fields, high-dimensional entanglement, and hyperentanglement. These cutting-edge protocols are designed to provide robust and secure communication channels critical for the future of space exploration and information exchange.

Equipped with state-of-the-art facilities, our group benchmarks emitter, receiver, and communication channel technologies to enhance quantum communication protocols. This comprehensive approach allows us to test and refine various components, ensuring optimal performance and reliability in practical applications. Our continuous efforts in research and development position us at the forefront of quantum technologies for space applications, contributing to the advancement of secure and efficient communication systems in both space and terrestrial environments

Your Partner for

Prototype Development:
From Breadboard Models to Advanced TRL

Our team is committed to the development of quantum technology prototypes, beginning with breadboard models that serve as preliminary testing platforms. These initial models are crucial for evaluating the feasibility and functionality of quantum technologies in space applications. We systematically advance these prototypes through various Technology Readiness Levels (TRL), refining and optimizing them for practical deployment. This process ensures that each prototype is rigorously tested and validated, ultimately leading to sophisticated solutions that are ready for integration into existing satellite systems and networks.

Proof of Concepts:
Real Environment Scenarios

We place a strong emphasis on proving the concepts of our quantum technologies within real-world space scenarios. This approach allows us to demonstrate the viability and effectiveness of our solutions in the actual environments where they will be applied. Conducting tests in real environment scenarios enables us to identify and address potential challenges, ensuring that our technologies perform reliably under the demanding conditions of space. This thorough validation process is essential for gaining the confidence of stakeholders and advancing these technologies from theoretical concepts to practical applications.

Solution Offers:
For the Space and Quantum Communication Industries

Our expertise in developing and adapting quantum technologies culminates in offering comprehensive solutions tailored to the needs of the space and quantum communication industries. We provide cutting-edge technologies that enhance communication security, efficiency, and reliability across satellite networks. Our solutions are designed to seamlessly integrate with existing systems, offering significant improvements in performance. By collaborating closely with industry partners, we deliver customized, scalable solutions that address specific challenges and opportunities within the space sector, driving innovation and progress in quantum communication.

Our Services and Competencies

Hardware:

Photon Pair Sources: customizable design and production of entangled or indistinguishable photon pair sources
Detection modules:
- Free-space characterization of transmission and detection modules for QKD and photon distribution applications.
- Verification and validation of single photon counters.
Polarization control: Development of polarization control and calibration – Active and passive techniques for maintaining and measuring polarization states in quantum channels.
Quantum optics: rapid prototyping for R&D initiatives

QuDice_alone — © Fraunhofer IOF
Real-size functional model (15 x 15 cm^2) of an entangled photon pair source (EPS) for degenerated states.

Skills:

Consultation Quantum Communication: Consulting on system-level quantum communication architecture – end-to-end design and hardware integration
Consultation and Testing Optical Systems: Consulting and evaluation of optical systems under environmental conditions — focusing on vibration, temperature, and alignment stability — to ensure that the field-deployable quantum systems remain robust and reliable in the harshest operational scenarios.

Infrastructure:

Testbed for Quantum Communication and beyond. Different configurations possible including hybrid combinations and access to laboratories:

Intra-city free-space link (1.7 km)
Long-distance fiber link (75 km)
Mobile receiving and sending unit for adhoc free-space links (QuBUS)
Optical ground station with telescope (80 cm diameter) for satellite-based communication – under construction

© Fraunhofer IOF
Mobile ground station QuBUS

© Fraunhofer IOF
Optical ground station Jena

© Fraunhofer IOF
Intra-city free-space link

Markets and Applications

Satellite Communication
Secure communication between satellites and ground stations.

Space Research
Use in experiments to investigate quantum phenomena.

Security Systems
Protection of sensitive data and communication in space.

Quantum Internet
Development of quantum networks for global communication.

Military Applications
Secure military communication and data transmission.

Telecommunications
Improvement of security in communication networks.

Remote Monitoring
Secure transmission of data from spacecraft to Earth.

© Fraunhofer IOF
Compact and robust entangled photon pair source based on the Sagnac-loop interferometer (18 x 9 cm^2). Promising candidate for a CubeSat mission and adaptable to terrestrial applications.

Your Benefits in Working with Us

Working with us in the development of new communication technologies for space offers numerous benefits. As a renowned research institute with years of experience in optics and fine mechanics, we are at the forefront of quantum technologies. Our expertise enables us to leverage cutting-edge research and innovative solutions to address the unique challenges of space communication. Collaborating with us means access to state-of-the-art facilities, a team of dedicated researchers, and a strong network of industry partnerships. Together, we can pioneer advancements that enhance security, efficiency, and reliability in space communication, ultimately contributing to the future of space exploration and technology.

Technical Equipment

State-of-the-art single photon detection systems for 1550 and 810 nm
Laser characterization (spectrum measurement, power and beam profiler)
Different Opto-mechanical architectures and concepts for entangled photons sources for 810 and 1550 nm and hybrid (1550 + 810 nm)

Qudice_upper_Hands_2 — © Fraunhofer IOF
This small footprint source is the basis for the development of an engineering model of an EPS in the EU-funded QUDICE project which aims to define the quantum payload for a CubeSat mission.

Our Research Strength

Free Space Quantum technologies deployment (Pages 10 - 13)

Patent list

Polarization compensation development (System for Polarization Compensation)
Quantum technologies deployment ( Optical transmission system)

Some publications

Institutsgebäude des Fraunhofer IOF — © Fraunhofer IOF
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Do you have any questions about our services? We will be happy to talk to you!

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