Interview questions

Quantum Computing Interview Questions and Answers – Set 1

This is the first in series of practice tests / interview questions and answers in relation to Quantum computing. It touches upon the basic concepts in relation to some of the following:

  • Qubit
  • Difference between a bit and Qubit
  • Superposition of Qubit states
  • Quantum entanglement

This practice test will prove to be useful for Quantum Computing beginners / interns / freshers. 


Revision Notes – Quantum Computing Fundamentals

  • Quantum computing is different than classical computing. Problems which are suited for quantum computing should be considered for Quantum computing.
  • A Qubit is a two-state quantum mechanical system;
  • A Qubit can be in superposition of both the states at the same time.
  • A Qubit is similar to bit in the way that the measurement of Qubit has two possible outcomes, usually 0 and 1
  • A Qubit is different than bit in the way that a Qubit can be in a state which is a superposition of both 0 and 1
  • The two states in which a qubit may be measured are known as basis states (basis vectors)
  • 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 actually, geometrically, spherical in shape.
  • A Quantum logic gate can operate on a Qubit.
  • 8 Qubits = 1 Qubyte (Quantum Byte)
  • A Qubit can be measured with quantum register
  • A Qubit is different than bit due to following reasons:
    • It can have superposition of states, e.g., can be in both states (usually 0 and 1) at the same time.
    • Can be entangled with other Qubit
  • In case of 2-qubit system, it is not possible to determine state of individual qubit in the system as the states of the two qubits are entangled


Practice Test – Quantum Computing Fundamentals

[wp_quiz id=”6106″]


References

Ajitesh Kumar

I have been recently working in the area of Data analytics including Data Science and Machine Learning / Deep Learning. I am also passionate about different technologies including programming languages such as Java/JEE, Javascript, Python, R, Julia, etc, and technologies such as Blockchain, mobile computing, cloud-native technologies, application security, cloud computing platforms, big data, etc. I would love to connect with you on Linkedin. Check out my latest book titled as First Principles Thinking: Building winning products using first principles thinking.

Recent Posts

What is Embodied AI? Explained with Examples

Artificial Intelligence (AI) has evolved significantly, from its early days of symbolic reasoning to the…

3 weeks ago

Retrieval Augmented Generation (RAG) & LLM: Examples

Last updated: 25th Jan, 2025 Have you ever wondered how to seamlessly integrate the vast…

3 months ago

How to Setup MEAN App with LangChain.js

Hey there! As I venture into building agentic MEAN apps with LangChain.js, I wanted to…

4 months ago

Build AI Chatbots for SAAS Using LLMs, RAG, Multi-Agent Frameworks

Software-as-a-Service (SaaS) providers have long relied on traditional chatbot solutions like AWS Lex and Google…

4 months ago

Creating a RAG Application Using LangGraph: Example Code

Retrieval-Augmented Generation (RAG) is an innovative generative AI method that combines retrieval-based search with large…

4 months ago

Building a RAG Application with LangChain: Example Code

The combination of Retrieval-Augmented Generation (RAG) and powerful language models enables the development of sophisticated…

4 months ago