Quantum Communication & Cryptography

Our center is dedicated to developing novel techniques and methods for long-distance quantum communication, with a strong emphasis on ensuring its security and reliability. Achieving secure quantum communication requires extensive research in several key areas: Optical Quantum Communication over Free Space and Fiber: Photons, as carriers of quantum information, can be transmitted either through optical fibers or free-space channels (such as satellite-based links). Our research focuses on optimizing these transmission methods to minimize losses and errors, making quantum communication more practical over long distances.

  • Quantum Repeaters: Since optical signals degrade over long distances due to absorption and scattering, quantum repeaters play a crucial role in extending communication range. By leveraging entanglement swapping and quantum error correction, we aim to develop efficient repeater protocols to overcome the limitations of direct transmission.

  • Quantum Key Distribution (QKD): QKD allows two parties to share a cryptographic key with unconditional security, based on the principles of quantum mechanics. Our work explores new protocols and implementation techniques to enhance the security, speed, and scalability of QKD systems.

  • Quantum Randomness Generation: True randomness is essential for cryptographic applications, and quantum mechanics provides a fundamental source of randomness. We are investigating advanced methods to generate high-quality quantum random numbers, ensuring their reliability for secure communication.

    • Through our research, we aim to push the boundaries of quantum communication technology, making it not only feasible for real-world deployment but also robust against potential adversarial attacks.