Quantum Computing Basics Flashcards
(24 cards)
What is a qubit?
A qubit is the basic unit of quantum information, analogous to a classical bit.
True or False: A qubit can exist in multiple states simultaneously.
True
What principle allows qubits to be in superposition?
Quantum superposition
Fill in the blank: Quantum computing utilizes the principles of ______ and entanglement.
superposition
What is entanglement in quantum computing?
Entanglement is a quantum phenomenon where qubits become interconnected and the state of one qubit can depend on the state of another.
What is the main advantage of quantum computing over classical computing?
Quantum computing can process complex calculations much faster due to superposition and entanglement.
Which algorithm is famous for factoring large integers efficiently on a quantum computer?
Shor’s algorithm
What does the term ‘quantum gate’ refer to?
Quantum gates are the basic building blocks of quantum circuits, manipulating qubits.
True or False: Quantum computers use binary digits (0s and 1s) exclusively.
False
What is the role of a quantum circuit?
A quantum circuit is a model for quantum computation that consists of qubits and quantum gates.
What is a quantum bit flip operation?
A quantum bit flip operation changes the state of a qubit from |0⟩ to |1⟩ or from |1⟩ to |0⟩.
Name one type of quantum computer architecture.
Trapped ion quantum computers
True or False: Quantum decoherence is a desired effect in quantum computing.
False
What is quantum supremacy?
Quantum supremacy is the point at which a quantum computer can perform a calculation that is infeasible for classical computers.
Multiple choice: What is a common application of quantum computing? A) Weather forecasting B) Quantum cryptography C) Classical data storage
B) Quantum cryptography
What is the Bloch sphere?
The Bloch sphere is a geometrical representation of a qubit’s state.
What does ‘quantum tunneling’ refer to?
Quantum tunneling is the phenomenon where particles pass through a potential barrier that they classically shouldn’t be able to.
Fill in the blank: The process of measuring a qubit causes it to ______.
collapse to a definite state
What is Grover’s algorithm used for?
Grover’s algorithm is used for searching unsorted databases more efficiently than classical algorithms.
True or False: Quantum computers can solve all problems faster than classical computers.
False
What is a quantum annealer?
A quantum annealer is a type of quantum computer designed to solve optimization problems.
What does the term ‘quantum error correction’ refer to?
Quantum error correction refers to techniques used to protect quantum information from errors due to decoherence and other quantum noise.
Multiple choice: Which of the following is a challenge for quantum computing? A) Scalability B) Speed C) Energy consumption
A) Scalability
What is the primary challenge of maintaining qubit coherence?
Environmental interference and noise
