Question 1

True or false: Quantum computers use traditional bits that can be both 0 and 1 at the same time.

Accepted Answer

False. They use qubits with superposition, not classical bits; 'both 0 and 1' is a simplification.

Question 2

True or false: Quantum computers will soon replace all classical computers in homes and offices.

Accepted Answer

False. They are specialized devices for niche problems; classical computers remain essential for everyday tasks.

Question 3

True or false: Quantum computers already exist that can factor a 2048-bit RSA number.

Accepted Answer

False. Current quantum computers factor small numbers like 15 or 21; factoring 2048-bit RSA is decades away.

Question 4

True or false: Error correction is a major hurdle because qubits are extremely sensitive to their environment.

Accepted Answer

True. Decoherence from noise causes errors; quantum error correction requires many physical qubits per logical one.

Question 5

True or false: Entanglement allows two qubits to be correlated instantly across any distance.

Accepted Answer

True. Entangled qubits share a quantum state; measuring one instantly affects the other, but no data travels faster than light.

Question 6

True or false: Quantum computers can solve any problem infinitely faster than classical computers.

Accepted Answer

False. They excel only at specific tasks like factoring and simulation; most problems see no speedup.

Question 7

True or false: A quantum computer with 50 qubits can outperform any classical supercomputer for certain tasks.

Accepted Answer

True. Around 50 qubits, quantum advantage emerges for specialized problems like random circuit sampling.

Question 8

True or false: Shor’s algorithm can break all modern encryption, including symmetric ciphers like AES.

Accepted Answer

False. Shor’s algorithm breaks RSA and ECC, but symmetric ciphers like AES are only weakened, requiring longer keys.

Quantum Computing Trivia Questions