Quantum Cryptography: Unlocking Unbreakable Secure Communication 🔒

Basic ideas of secure communication (both classical and quantum) will be briefly reviewed with a focus on the recent achievements. Stress will be given on the physical origin of unconditional security which is a desirable feature of secure communication, but cannot be achieved in the classical world. The talk will start with the discussion on quantum key distribution and we will gradually introduce the quantum protocols for the other cryptographic tasks like, key agreement, quantum secure direct communication, e-commerce, e-auction, and voting. Relationship between the quantum computation and quantum communication will be explored in light of a set of secure multi-party computation (SMC) tasks and the potential hacking strategies. In this context some introduction to the recent developments in quantum computation and post-quantum cryptographic schemes will also be provided. About the speaker: Prof. Anirban Pathak is a theoretical physicist. He did his Ph.D. from Visva Bharati, Santiniketan, India. Subsequently, he was a post-doctoral fellow in the Freie University, Berlin. He joined JIIT, Noida in 2002. At present he is actively involved in teaching and research related to several aspects of quantum optics and quantum information. He is a member of National Academy of Science, India (NASI) and several other professional bodies. He is a visiting scientist at Palacky University, Czech Republic. Earlier, he was an associate of Indian Institute of Mathematical Science (IMSc), Chennai, India. He guided 4 PhD students and at present he leads a research group focused on quantum optics and quantum information. The group has 2 post-docs, 4 PhD students and couple of project students. He has also completed two DST funded projects and has also refereed for several journals of international repute, e.g., Opt. Commn., Phys. Lett. A, J. Phys. A., J. Phys. B., Laser Phys., J. Mod. Quant. Infor. Proces., Opt., Int. J. Quant. Infor. , Quant. Infor. Commn., Int. J. Theor. Phys., Scientific Reports, etc. He has active research collaboration with different research groups in India, Czech Republic, Poland, Canada, Germany, Japan, Malaysia, and Argentina.