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ISQS 2340 Exam 3 Questions and Answers Already Passed What is a quantum bit, or qubit? A quantum bit (qubit) is the fundamental unit of quantum information, which can exist in multiple states simultaneously. What principle allows quantum computers to process multiple possibilities at once?...

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  • December 4, 2024
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ISQS 2340 Exam 3 Questions and
Answers Already Passed
What is a quantum bit, or qubit?


✔✔A quantum bit (qubit) is the fundamental unit of quantum information, which can exist in

multiple states simultaneously.




What principle allows quantum computers to process multiple possibilities at once?


✔✔The principle of superposition allows quantum computers to process multiple possibilities

simultaneously.




In quantum computing, what is entanglement?


✔✔Entanglement is a phenomenon where qubits become correlated in such a way that the state

of one qubit directly affects the state of another, regardless of the distance between them.




What is the advantage of quantum computing over classical computing in solving certain

problems?


✔✔Quantum computing has the potential to solve complex problems, like factoring large

numbers, much faster than classical computers.




1

,Which algorithm is known for demonstrating the potential of quantum computing in factoring

large numbers?


✔✔Shor's algorithm is known for demonstrating quantum computing's potential in factoring

large numbers.




What is quantum tunneling in quantum computing?


✔✔Quantum tunneling is a phenomenon where a particle passes through a barrier that it

classically could not surmount, used in some quantum computing models for optimization.




What is the current major limitation of quantum computing?


✔✔The major limitation of quantum computing today is the issue of qubit stability and error

rates, often referred to as quantum decoherence.




What does the term "quantum speedup" refer to?


✔✔Quantum speedup refers to the theoretical advantage that quantum computers can have over

classical computers for solving certain problems more efficiently.




What is Grover's algorithm used for in quantum computing?




2

,✔✔Grover's algorithm is used for searching unsorted databases more efficiently than classical

algorithms.




Why is quantum error correction crucial in quantum computing?


✔✔Quantum error correction is crucial because quantum systems are extremely sensitive to

noise and errors, which can lead to inaccurate computations.




What is a quantum gate in quantum computing?


✔✔A quantum gate is a basic operation that manipulates qubits, analogous to logic gates in

classical computing, but operating on quantum states.




What is the concept of quantum parallelism?


✔✔Quantum parallelism allows quantum computers to evaluate many different possibilities

simultaneously, enabling faster computation for certain types of problems.




What is the difference between classical and quantum computing in terms of information

storage?




3

, ✔✔In classical computing, information is stored in bits, which can be either 0 or 1, while in

quantum computing, information is stored in qubits, which can exist in a superposition of both 0

and 1 simultaneously.




What is a quantum computer's main advantage in solving optimization problems?


✔✔Quantum computers can evaluate many possible solutions simultaneously, offering potential

speedups for optimization problems.




How does quantum entanglement enhance quantum computing?


✔✔Quantum entanglement allows qubits to be interconnected, enabling faster and more efficient

problem-solving by sharing information instantaneously across long distances.




What role does superposition play in quantum computing?


✔✔Superposition allows qubits to represent multiple states at once, enabling quantum computers

to perform complex calculations more efficiently than classical computers.




What is a quantum circuit in quantum computing?


✔✔A quantum circuit is a model for quantum computation, consisting of a series of quantum

gates applied to qubits to manipulate their states and solve problems.


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