Answer the following questions. What laws of physics is quantum cryptography based on?

What laws of physics is quantum cryptography based on?

Why can't you measure every aspect of a particle at the same time?

How do polarization filters work?

How can the laws of quantum mechanics be used in cryptography? Base on the diagram below.

Mark the following statements true or false. Correct the false statements.

1. The communication channel can be protected from the eavesdropper by the laws of physics.

2. No eavesdropper can intercept the transmission protected by quantum cryptography.

3. All characteristics of particles as studied by quantum mechanics can be easily measured.

4. Polarization filters let polarized photons pass through the communication channel in any direction.

5. If we turn the vertically polarized filter 90 degrees the horizontally polarized photons won’t get through.

6. You can learn the polarization only if you measure it in the basis it is polarized.

7. If we turn the horizontally polarized filter 30 degrees the vertically polarized photons will get through.

8. In quantum mechanics particles can change the polarization to get through the filter.

9. Quantum cryptography is still theoretical.

10. According to quantum mechanics particles can adapt to the polarization of the filter.

Vocabulary tasks

Give English equivalents of the following Russian words and words combinations.

Неопределенность, передача (информации), возможность, под углом, в определенном направлении, избежать, проходить сквозь что-либо.