Drone-based Quantum Key Distribution

Source: DD News

Context: The Centre for Development of Telematics (C-DOT) signed an MoU with Synergy Quantum India to jointly develop drone-based Quantum Key Distribution (QKD) systems.

About Quantum Key Distribution (QKD):

• What is Quantum Key Distribution (QKD)?

• QKD is a secure method of key exchange that uses quantum mechanics instead of mathematical encryption algorithms to share cryptographic keys.

• How QKD Works?

• Photons (light particles) with random quantum states are transmitted over a channel. The no-cloning theorem and measurement disturbance principle ensure any eavesdropping is detectable. After transmission, both parties compare a subset to detect errors or interception. Final keys are extracted after error correction and privacy amplification.

• Photons (light particles) with random quantum states are transmitted over a channel.

• The no-cloning theorem and measurement disturbance principle ensure any eavesdropping is detectable.

• After transmission, both parties compare a subset to detect errors or interception.

• Final keys are extracted after error correction and privacy amplification.

• Types of QKD:

• Prepare-and-Measure Protocols: Sender prepares photons in known states (e.g., BB84 protocol). Used to detect interception. Entanglement-Based Protocols: Relies on quantum entanglement. Change in one entangled particle affects its pair, enabling tamper detection. Discrete Variable QKD (DV-QKD): Uses individual photons and polarization for data encoding. Continuous Variable QKD (CV-QKD): Uses laser properties like amplitude and phase for encoding (e.g., Silberhorn protocol).

• Prepare-and-Measure Protocols: Sender prepares photons in known states (e.g., BB84 protocol). Used to detect interception.

• Sender prepares photons in known states (e.g., BB84 protocol).

• Used to detect interception.

• Entanglement-Based Protocols: Relies on quantum entanglement. Change in one entangled particle affects its pair, enabling tamper detection.

• Relies on quantum entanglement.

• Change in one entangled particle affects its pair, enabling tamper detection.

• Discrete Variable QKD (DV-QKD): Uses individual photons and polarization for data encoding.

• Continuous Variable QKD (CV-QKD): Uses laser properties like amplitude and phase for encoding (e.g., Silberhorn protocol).

• Key Features:

• Tamper detection: Any interception is instantly detectable. Provable security: Based on physical laws, not computational complexity. Quantum-resilient: Immune to future threats from quantum computers.

• Tamper detection: Any interception is instantly detectable.

• Provable security: Based on physical laws, not computational complexity.

• Quantum-resilient: Immune to future threats from quantum computers.

About Drone-Based Quantum Key Distribution Technology:

• What is Drone-Based Quantum Key Distribution Technology?

• A futuristic application of QKD via drones, enabling secure key exchange over dynamic and remote locations without dependency on fixed fiber-optic infrastructure.

• Features:

• Mobility & Flexibility: Can be deployed quickly in disaster zones, border areas, or rural setups. Uses Decoy-State BB84 Protocol: Enhances security and efficiency using polarization encoding. Targeted for TRL 6+: Demonstrates a system prototype in a relevant environment. Boosts Secure Communication: Especially vital for defense, surveillance, and confidential data transfer. Atmanirbhar Bharat-Aligned: Promotes indigenous research and innovation in quantum technologies.

• Mobility & Flexibility: Can be deployed quickly in disaster zones, border areas, or rural setups.

• Uses Decoy-State BB84 Protocol: Enhances security and efficiency using polarization encoding.

• Targeted for TRL 6+: Demonstrates a system prototype in a relevant environment.

• Boosts Secure Communication: Especially vital for defense, surveillance, and confidential data transfer.

• Atmanirbhar Bharat-Aligned: Promotes indigenous research and innovation in quantum technologies.