Quantum Coin Flip Concepts

Quantum Coin Flip Concepts

Assessment

Interactive Video

Physics

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

Diana from Physics Girl explains a problem in quantum cryptography: flipping a coin over the phone. She introduces the concept of a quantum coin flip, which uses wave function collapse and light polarization to ensure fairness between two parties who don't trust each other. The video demonstrates how polarizing filters work and how they can be used to encode and decode information securely. The process involves sending a stream of photons with specific polarizations to encode a random sequence of ones and zeros, which the receiver must decode without knowing the original orientation. The video concludes with a discussion on the impossibility of cheating in this system and provides links to further resources.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main problem discussed in the video that requires a quantum solution?

Making a phone call

Sending an email

Sending a text message

Flipping a coin over the phone

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What principle of quantum physics is essential for understanding the quantum coin flip?

Schrodinger's cat

Heisenberg uncertainty principle

Quantum entanglement

Wave function collapse

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What property of photons is used in the quantum coin flip process?

Velocity

Polarization

Charge

Mass

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when vertically polarized light passes through a horizontal filter?

It changes color

It speeds up

It gets blocked

It passes through

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does a diagonal filter affect vertically polarized photons?

They change direction

All photons pass through

All photons are blocked

Half pass through, half are blocked

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the quantum coin flip, what does a vertically polarized photon represent?

A two

A three

A one

A zero

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the probability of a photon passing through a filter at a 45-degree angle to its polarization?

100%

50%

25%

0%

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