QSim: Quantum Computer Simulator Toolkit

Playground for anyone passionate to learn or experiment in quantum computing, be it students, faculty or researchers.


About QSim

The Quantum Computing Toolkit Project is one of the first initiatives in the country to address the common challenge of advancing the Quantum Computing research frontiers in India.

The project is accomplished by multidisciplinary groups of academicians, scientists, engineers and industry from various leading organizations including – IISc, IIT-Roorkee and C-DAC.

The QSim is like a playground for anyone passionate to learn or experiment in quantum computing, be it students, faculty or researchers.

The QSim offers a robust QC Simulator integrated with a GUI based workbench in which you can create quantum circuits and quantum programs, view the outputs, online help, solved examples and related literature/material.

IIT Roorkee


Quantum Circuits

Simulate quantum circuits

Dynamic simulation of quantum circuits with custom parameters.

Noise Parameters

Quantum Noise

Realistic simulator considering effects of noise


Intuitive UI

Intuitive UI/UX helps users to conceptualize and create quantum programs

Secured Login

Secured user management

Secure user management with options to save quantum programs/circuits

Code editor

Code editor

Advanced Python code editor for Quantum Circuits.

Online Help

Examples & Help

Online help, solved examples, and learning material. 

QC Workbench

Knowledge Base

Qiskit Textbook

The Qiskit Textbook is a free digital open source textbook that will teach the concepts of quantum computing while you learn to use Qiskit. Click here to read the complete Textbook.

Coding with Qiskit

This video series starts at learning how to install Qiskit locally, understanding what gates to do quantum states and explores quantum algorithms and the latest research topics.

Introduction to Quantum Computing and Quantum Hardware

An introduction to the world of quantum computing, with an exploration of some of the key quantum algorithms and their implementations, as well as the quantum hardware that is designed to run these algorithms. Learn more about Qiskit.

Learn about Qiskit Aakash

Qiskit Aakash is a density matrix based software simulator developed by Indian Institute of Science (IISc), Bengaluru. The links provided in this page aims to explain how to use the new simulator ('dm_simulator') that has been added to existing qiskit backends. Those...

Quantum Simulator

QSim provide a platform for researchers to explore quantum computers that are difficult to obtain. IISc has developed a realistic quantum computer simulator named dm-sim (based on Density Matrix Formalism). It simulates the behavior/execution of quantum circuits on...

Contact Us

Have a query or a feedback? Reach out to us to learn more about the Quantum Simulator Toolkit and we will be in touch with you at the earliest.

Email Us

qcworkbench [at] cdac [dot ] in

Upcoming Events

Deep Dive Training on Quantum Computing & Communication

Dates: 27th June 2022 to 1st July 2022
Venue: CDAC, EC, Bangalore
Email: quantum-outreach-blr [at] cdac [dot] in

The Workshop features expert talks from quantum researchers and practitioners, exclusive hands-on, case studies and tools, and first-hand experience with educative lab walkthroughs. This Workshop targets a wide array of participants ranging from scientists, senior managers, decision-makers, research scholars, and technology officers to general quantum enthusiasts.