RSL Quantum Reimagining Speculative Leadership
Quantum software, built in India

Quantum Power.
From Bharat.
For the World.

RSL Quantum Private Limited is an early-stage Indian quantum software company incubated at FITT, IIT Delhi. It is building software and simulation tools in five areas: quantum compute, quantum intelligence, quantum sensing, quantum materials and quantum applications. It does not build quantum hardware. Founded by Prof. Santhosh Sivasubramani of IIT Delhi.

Book a scoping call What we build
About

An Indian quantum software company, built where the research lives.

We are translating research from IIT Delhi into a quantum software stack built in India, in areas that are priorities of the National Quantum Mission of the Government of India.

We see quantum as a layer that joins compute, intelligence, sensing, materials and applications. The five pillars below describe what we are building. The sectors below are the ones we are building for.

What we build

Five pillars. One stack.

01

Quantum Compute

Software designed to run on classical hardware today and on quantum machines as they mature.

02

Quantum Intelligence

Tools that bring quantum methods into machine learning workflows, designed to work alongside the frameworks teams already use.

03

Quantum Sensing

A simulation layer for quantum sensors used in timing and navigation.

04

Quantum Materials

Computational discovery pipelines for materials used in quantum hardware.

05

Quantum Applications

Cross domain quantum methods for biology, finance, energy, logistics, and any sector where computation is the bottleneck.

Why now

The next decade of computing will be defined by who can build the software that makes quantum useful. The National Quantum Mission of the Government of India has set that decade in motion. RSL Quantum exists to build that software in India, for Bharat and for the world.

Sectors

Sectors we are building for.

Defence

Simulation of quantum sensing, timing and secure communication for defence research.

Space

Trajectory, sensor and materials modelling for space programmes and new space companies.

Industry

Chemistry, optimisation and materials problems in pharma, energy, finance and manufacturing, starting with scoping studies.

Academia

Research collaboration with universities and research institutes, starting from the INTRINSIC Lab, IIT Delhi.

Milestones

Company milestones.

RSL Quantum is incubated at FITT, IIT Delhi and builds on research from the INTRINSIC Lab. The dots below mark the milestones so far.

  1. 2026

    Incorporated

    RSL Quantum Private Limited, CIN U62010DL2026PTC466369. Registered office at FITT, IIT Delhi.

  2. 2026

    FITT Incubation

    Approved by the 118th TSSC of FITT, IIT Delhi.

  3. 2026

    Quantum Bazaar Book 1

    Quanta and the Two-State Coin, a picture book about quantum for children, on sale on Amazon.

Portrait of Prof. Santhosh Sivasubramani

Prof. Santhosh Sivasubramani

Director and Founder, RSL Quantum

Director, INTRINSIC Lab, Centre for SeNSE, IIT Delhi

LinkedIn

Founder

Where the research becomes a company.

Prof. Santhosh Sivasubramani directs the INTRINSIC Lab at the Centre for SeNSE, IIT Delhi, where his research covers rebooting computing and quantum systems.

He founded RSL Quantum to translate that research into quantum software built in India. Built for Bharat. Engineered for the world.

Contact

Tell us what you are working on.

For scoping calls, partnerships, investor enquiries, research collaborations or press, write to us using the form. For quick questions, use the chat assistant at the bottom right.