Quantum Satellite

Source: TH

Context: India plans to launch its first quantum satellite within the next 2-3 years under the National Quantum Mission (NQM).

About Quantum Satellite:

• What it is:

• A quantum satellite is a communication satellite that uses quantum physics principles, such as quantum entanglement and superposition, to enable highly secure data transmission.

• Science behind its working:

• Quantum Cryptography: Utilizes quantum principles like entanglement and quantum measurement to secure data. Quantum Key Distribution (QKD): Ensures encryption keys are shared securely between parties. Any eavesdropping alters the quantum state, alerting users. Photon Transmission: Encodes information in photons, which are transmitted through free space or fibre-optic cables.

• Quantum Cryptography: Utilizes quantum principles like entanglement and quantum measurement to secure data.

• Quantum Key Distribution (QKD): Ensures encryption keys are shared securely between parties. Any eavesdropping alters the quantum state, alerting users.

• Photon Transmission: Encodes information in photons, which are transmitted through free space or fibre-optic cables.

• Features:

• Quantum Key Distribution (QKD): Facilitates secure encryption key exchanges. Quantum Entanglement: Ensures instantaneous detection of tampering. High-Speed Communication: Enhanced data security without sacrificing speed. Global Reach: Enables long-distance secure communication through satellite-ground systems.

• Quantum Key Distribution (QKD): Facilitates secure encryption key exchanges.

• Quantum Entanglement: Ensures instantaneous detection of tampering.

• High-Speed Communication: Enhanced data security without sacrificing speed.

• Global Reach: Enables long-distance secure communication through satellite-ground systems.

• Advantages:

• Enhanced Security: Virtually immune to hacking due to quantum measurement principles. Future-Proof Encryption: Counters threats posed by quantum computers to classical cryptographic systems. Strategic Applications: Useful in defence, banking, and secure government communications. Technological Leadership: Positions India as a global leader in quantum technologies.

• Enhanced Security: Virtually immune to hacking due to quantum measurement principles.

• Future-Proof Encryption: Counters threats posed by quantum computers to classical cryptographic systems.

• Strategic Applications: Useful in defence, banking, and secure government communications.

• Technological Leadership: Positions India as a global leader in quantum technologies.

• Limitations:

• High Costs: Development, deployment, and maintenance are resource-intensive. Distance Challenges: Signal loss over long distances due to atmospheric and technical constraints. Denial-of-Service Risks: Eavesdroppers can disrupt transmissions without stealing data. Hardware Limitations: Difficult to upgrade or patch quantum hardware.

• High Costs: Development, deployment, and maintenance are resource-intensive.

• Distance Challenges: Signal loss over long distances due to atmospheric and technical constraints.

• Denial-of-Service Risks: Eavesdroppers can disrupt transmissions without stealing data.

• Hardware Limitations: Difficult to upgrade or patch quantum hardware.

Insta Links:

• Challenges-in-implementing-national-quantum-mission