Preview

01 - Quantum Computing (Foundations)

 1. There is currently not enough computational power on Earth to tackle certain problems that are above a certain ___________________________. (2 marks)
qc_cert_Bloch_Sphere.png

 2. Universal quantum computers leverage the quantum mechanical phenomena of ____________ and _______________ to create states that scale exponentially with number of qubits, or quantum bits. (2 marks)

 3. The below image shows a caffiene molecule. For simple molecules like this, the number of quantum states in the system __________________________________.
caffienemolecule_qc.png

  is directly proportional to the number of elements in the molecule (in this case 2)

  can be enormous

  can only ever be 1

  is always a maximum of only two

 4. Current computers store information as binary 0 and 1 states. Quantum computers leverage quantum mechanical phenomena and they rely on quantum bits, also called: ________.

  entangled bits

  qubits

  quarkbits

  microbits

 5. _____________ refers to a combination of states we would ordinarily describe independently. To make a classical analogy, if you play two musical notes at once, what you will hear is a _________ of the two notes.

  entanglement

  superposition

  interference

  double positioning

 6. Entanglement is a famously counter-intuitive quantum phenomenon describing behavior we never see in the classical world. Entangled particles behave together as a system in ways that ____________________________.

  cannot be explained using classical logic.

  are a violation of the supernatural and evidence against it.

  are consistent with causality.

  can be explained using newton's gravity laws.

 7. Quantum states can undergo interference due to a phenomenon called phase.Quantum interference is similar to wave interference and ______________

  when two waves are out of phase,their wavelengths achieve a higher frequency than naturally possible

  when two waves are in phase, their amplitudes add, and when they are out of phase, their amplitudes cancel

  when two phases are in phase, their frequencies cancel, and when out of phase, their frequencies add.

  when two waves are in phase, they interfere with qubits present in the atmosphere

 8. A useful metric for understanding quantum capability is quantum volume. It measures the relationship between number and quality of qubits, circuit connectivity, and _________________.

  error rates of operations.

  entanglement opportunities.

  interference amplitudes.

  superposition states.

 9. In case of 2-qubit system, it is not possible to determine the state of an individual qubit in the system as the states of the two qubits are entangled

  True

  False

 10. The amount of information stored in N Qubits is ________ to the power of N classical bits

  1

  3

  4

  2

 11. Unlike a bit, the measurement of Qubit can have more than two possible outcomes.

  FALSE

  TRUE

 12. Unlike a bit, the Qubit can be in both 0 and 1 state (superposition of both 0 and 1 states).

  FALSE

  TRUE

 13. In quantum mechanics, the Bloch sphere is a geometrical representation of the pure state space of a 2-level quantum system. The Bloch sphere is rectangular (cuboid) in shape.

  True

  False

 14. Suppose you have 2 particles entangled, separated by a long distance. if you change the state of particle A, the particle B will change too. Thus, one can create a ____________ using entangled particles. 
*Entanglement is the fact that the state of a particle influences the state of its counterpart.

  physical interceptable network

  encrypted language

  charged atmosphere that has more power than conventional electrons

  communication system of sorts

 15. In 2019 IBM revealed its biggest yet quantum computer, consisting of 15 million qubits.

  True. IBM is leading the race to build a truly powerful quantum computer.

  Actually, it was 53 qubits

  IBM has never released a quantum computer and is not in the game for this emerging technology.

  15 million??! The number of qubits was 5.


Report an error