Superconducting nanowire single-photon detector

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/superconducting-nanowire-single-photon-detector

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is a superconducting nanowire single-photon detector?It is a tiny device that can catch a single photon of light. It uses a very thin wire that stops being superconducting when a photon hits it.
2. How does it catch a single photon?The wire is cooled below 4 Kelvin and carries a steady current. When a photon lands, it creates a hotspot that temporarily breaks superconductivity, producing a voltage pulse that is measured.

Superconducting Nanowire: An extremely thin wire exhibiting zero electrical resistance below a critical temperature and magnetic field.
Quantum Efficiency: The probability that a detector will register a photon when one is incident upon it.
Timing Jitter: The uncertainty or variation in the measured arrival time of a detected photon.