Research Areas

Quantum Communications

Quantum Communications is a research field that harnesses the fundamental laws of quantum mechanics to transmit quantum states of light. Unlike classical communication systems, where the information carrier consists of classical bits represented as "0" and "1", quantum communication systems store and transmit information using "qubits." A qubit is a quantum bit that, unlike classical bits, can exist in multiple quantum states simultaneously, a phenomenon known as superposition. This unique property enables information processing in a much more secure and efficient manner. Quantum Key Distribution (QKD) is an instance of quantum communication between remote parties that deals with the distribution of qubits over an optical fiber or free space channels. The information stored in the qubits is used to securely transfer symmetrical encryption keys. QKD relies on the no cloning theorem of quantum mechanics to ensure the security of the key distribution process. Thus, any attempt to eavesdrop on the transmission (measurement of the quantum state) will inevitably introduce detectable changes in the quantum states, allowing the users to detect eavesdropping. Consequently, the implementation of QKD in real-world scenarios has the potential to offer a substantial degree of security for confidential information. This renders QKD an important area of study for the secure distribution of critical data in fields such as governmental and healthcare facilities, financial industry, and more.