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Questions and Answers
What is the quantum bit (qubit) able to do?
What is the quantum bit (qubit) able to do?
- Store data
- Solve problems quickly
- Represent a 1 or 0 quantum state (correct)
- Follow the Church-Turing thesis
What type of model does not use qubits?
What type of model does not use qubits?
- Classical computers
- Continuous variable quantum computation (correct)
- Quantum algorithms
- Quantum supremacy
What does the Church-Turing thesis state?
What does the Church-Turing thesis state?
- Quantum computers provide no additional advantages over classical computers (correct)
- Quantum computers are able to quickly solve certain problems
- Quantum algorithms for certain problems have significantly lower time complexities
- Quantum computers are based on the quantum bit
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Study Notes
- Quantum computers harness the phenomena of quantum mechanics, such as superposition, interference, and entanglement.
- Quantum computers are based on the quantum bit, or "qubit".
- A qubit can be in a 1 or 0 quantum state, or in a superposition of the 1 and 0 states.
- When it is measured, it is always 0 or 1; the probability of either outcome depends on the qubit's quantum state immediately prior to measurement.
- One model that does not use qubits is continuous variable quantum computation.
- Quantum computers obey the Church–Turing thesis, which means that while quantum computers provide no additional advantages over classical computers in terms of computability, quantum algorithms for certain problems have significantly lower time complexities than corresponding known classical algorithms.
- Quantum computers are believed to be able to quickly solve certain problems that no classical computer could solve in any feasible amount of time—a feat known as "quantum supremacy."
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