Computer Science for IGCSE & O level - Data Transmission (Section 4 - No. 19)

Which of the following statement(s) is/are true regarding Quantum cryptography?

Quantum cryptography is based on the use of particular properties of light.

A bit of 0 and 1 is encoded using only 1 direction.

The sender and receiver public/private exchange which basis they used for each photon.

A qubit encodes information by using the polarization of a single photon.

Quantum cryptography uses the properties of light and a qubit encodes information using the polarization of a single photon.