Quantum Information Theory MCQs With Answers

Which theorem states that any two entangled particles must be described as a single quantum system?

What is the process of using quantum systems to perform computations?

Which law states that the total energy of an isolated quantum system remains constant over time?

Which theorem states that quantum computers can efficiently solve certain problems faster than classical computers?

Which theorem states that it is impossible to create an exact copy of an arbitrary unknown quantum state?

What is the term for a quantum gate that reverses the operation it performs?

What is the effect where quantum information becomes irrecoverably mixed with the environment?

Which law states that quantum information cannot be destroyed?

Which law states that a quantum system's state evolves over time in a predictable manner?

What is the term for a quantum gate that performs operations on two or more qubits?

Which law of quantum mechanics states that measuring a system disturbs it?

Which quantity measures the amount of information gained from a quantum measurement?

Which theorem states that any quantum state can be expressed as a linear combination of orthonormal basis states?

What is the term for the fundamental principles that govern the behavior of quantum systems?

Which law states that two identical fermions cannot occupy the same quantum state simultaneously?

Which theorem provides a fundamental limit on the rate of reliable information transmission over a quantum channel?

What is the process of converting quantum information into classical information?

What is the name of the process where quantum information is spread across many qubits?

What is the term for the smallest change in a quantum system that still has physical meaning?

Which theorem states that any quantum operation can be represented by a unitary matrix?

What is the term for the set of rules governing how quantum states can evolve over time?

What is the process of encoding information in the quantum state of a particle?

What is the name of the principle that allows a quantum system to exist in multiple states at once?

What is the term for the process of extracting classical information from a quantum state?

Which concept allows quantum systems to process multiple computations simultaneously?

What principle suggests that measurement outcomes are probabilistic in quantum mechanics?

What is the quantum equivalent of a classical bit?

What principle suggests that quantum systems can exist in a state of indefinite uncertainty until measured?

Which theorem describes the security of quantum key distribution protocols?

What is the effect where a quantum state collapses to one of its eigenstates upon measurement?

What principle suggests that two observers may experience different realities due to their perspectives?

What is the phenomenon where two quantum particles are intrinsically correlated?

Which law states that the state of a quantum system can be described by a wavefunction?

What is the principle that allows quantum systems to exhibit properties of both particles and waves?

Which concept states that two entangled particles can instantaneously affect each other's states regardless of distance?

Which effect describes the ability of a particle to pass through a potential barrier?

What principle asserts that some quantum properties cannot be simultaneously measured with arbitrary precision?

What term describes the amount of uncertainty in a quantum system?

Which principle suggests that the state of a quantum system is determined by all possible paths it could take?

What is the fundamental unit of quantum information?