Saturday, April 4, 2026

New Complexity Theory Emerges for Quantum Era

Computer science is about inputs and outputs. For example, when you multiply two numbers on a calculator, you enter the numbers. Then, the screen shows the answer. Some problems, like breaking a number into prime factors, can be harder. But they also follow the same basic idea. Computers change numbers, usually written in 0s and 1s, into outputs.

Researchers study why some problems are harder for computers to solve. They found that some tasks, like the prime factor problem, are easier for quantum computers. Quantum computers use the rules of quantum physics.

For 30 years, researchers have looked at problems where quantum computers are better. But they want to study more problems that do not use normal inputs and outputs. Henry Yuen is interested in these problems. He wants to find out how to understand quantum inputs and outputs.

Yuen is a professor at Columbia University. He wants to create a new theory for these unique problems. He grew up in a restaurant and learned computer programming to make video games. This led him to study quantum computing in college.

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Vocabulary List:
6 words · tap to reveal
ON

Accent

inputs/ˈɪn.pʊts/noun
Data or signals that are entered into a system for processing.

outputs/ˈaʊt.pʊts/noun
Data or signals produced by a system after processing inputs.

problems/ˈprɒb.ləmz/noun
Situations or tasks that require a solution or resolution.

quantum/ˈkwɒn.təm/adjective
Relating to the smallest amounts or units of energy in physics.

theory/ˈθɪə.ri/noun
A system of ideas intended to explain something based on general principles.

factors/ˈfaktərz/noun
Elements or components that contribute to a particular result or situation.

How much do you know?

What is the basic concept of computer science?
Inputs and outputs
Only calculations
Data storage
Artificial Intelligence
Which of the following problems is mentioned as being harder for computers to solve?
Multiplying numbers
Breaking a number into prime factors
Adding numbers
Sorting data
What unique format do computers typically change numbers into?
Decimals
Hexadecimal
0s and 1s
Alphanumeric
Who is interested in understanding quantum inputs and outputs?
Albert Einstein
Henry Yuen
Stephen Hawking
Isaac Newton
What type of computers are found to be better at certain tasks?
Classical computers
Quantum computers
Supercomputers
Personal computers
Where does Henry Yuen work as a professor?
Harvard University
Stanford University
Columbia University
MIT
Quantum computers follow the rules of classical physics.
Henry Yuen has been researching quantum computing for over 30 years.
Researchers are interested in problems that do not use normal inputs and outputs.
Computers primarily use letters to represent numbers.
Yuen has a background in programming video games.
The prime factor problem is easier for classical computers.
Computer science involves the concept of and outputs.
Researchers have studied problems where computers are better.
Henry Yuen is a professor at University.
Computers change numbers into , usually written in 0s and 1s.
Henry Yuen grew up in a .
Yuen wants to create a new for unique problems.
This question is required

Test Your Understanding

Start Quiz
Vocabulary List:
6 words · tap to reveal
ON
Accent
inputs/ˈɪn.pʊts/noun
Data or signals that are entered into a system for processing.
outputs/ˈaʊt.pʊts/noun
Data or signals produced by a system after processing inputs.
problems/ˈprɒb.ləmz/noun
Situations or tasks that require a solution or resolution.
quantum/ˈkwɒn.təm/adjective
Relating to the smallest amounts or units of energy in physics.
theory/ˈθɪə.ri/noun
A system of ideas intended to explain something based on general principles.
factors/ˈfaktərz/noun
Elements or components that contribute to a particular result or situation.

How much do you know?

What is the basic concept of computer science?
Inputs and outputs
Only calculations
Data storage
Artificial Intelligence
Which of the following problems is mentioned as being harder for computers to solve?
Multiplying numbers
Breaking a number into prime factors
Adding numbers
Sorting data
What unique format do computers typically change numbers into?
Decimals
Hexadecimal
0s and 1s
Alphanumeric
Who is interested in understanding quantum inputs and outputs?
Albert Einstein
Henry Yuen
Stephen Hawking
Isaac Newton
What type of computers are found to be better at certain tasks?
Classical computers
Quantum computers
Supercomputers
Personal computers
Where does Henry Yuen work as a professor?
Harvard University
Stanford University
Columbia University
MIT
Quantum computers follow the rules of classical physics.
Henry Yuen has been researching quantum computing for over 30 years.
Researchers are interested in problems that do not use normal inputs and outputs.
Computers primarily use letters to represent numbers.
Yuen has a background in programming video games.
The prime factor problem is easier for classical computers.
Computer science involves the concept of and outputs.
Researchers have studied problems where computers are better.
Henry Yuen is a professor at University.
Computers change numbers into , usually written in 0s and 1s.
Henry Yuen grew up in a .
Yuen wants to create a new for unique problems.
This question is required

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