Why we exist
Design and build India’s quantum chip —
and everything that will run on it.
Atomic Cubit builds the processor, the software that runs it, and the chemistry it unlocks — one foundation, one company.
Atomic Cubit, by the numbers
Logical Bell-state fidelity, certified in all three bases
Logical qubits certified in a single run — 31 independent encoded pairs
Lower logical error at code distance 9 than distance 3, at low noise — in simulation
Comparisons where logical error fell at larger code distance: Google’s public data, open-source decoder
Suppression factor: our simulation of Google’s processor, fitted to a different published figure, beside Google’s value
The surface code lands natively on our target lattice
1 Encoded-pair measurements, post-selected, 2026. Conditions, acceptance rates and job IDs: the ledger.
2 Circuit-level simulation, Stim — minimum-weight matching.
3 Google Quantum AI’s public surface-code dataset (Zenodo, CC-BY-4.0): their measurement on their hardware, re-decoded offline with open-source PyMatching. 17 of the archive’s 420 configurations. The eight comparisons: distance 3→5 and 5→7, X and Z bases, 13 and 30 rounds. Conditions and limits: the ledger.
4 Simulation only, of Google’s processor from its published coherence times and cycle time, not of ours, and not a blind test: Google’s value (2.14 ± 0.02) was already published, and the model’s one free parameter was fitted to another figure from the same paper. Archived run, at 3, 5 and 7 rounds: 2.11 ± 0.03 (sampling error only). Details: the ledger.
News
Hyderabad’s Quantum Leap: How Atomic Cubit and Quantamathical Are Shaping Science’s Next Frontier
Building quantum technology from India.
Prime Post features the founders of Atomic Cubit and Quantamathical, our Nandi Q1 processor design, and our vision for quantum computing and computational drug discovery.
Read the press release →Research
The Chemistry Performance Envelope.
Circuit resources, energy prediction and conditional processor budgets for quantum chemistry.
Research preprint · 18 September 2026. Not peer reviewed.
Read the paper and supporting materials →What we believe
“Measure first. Then design.”
The method
“The chip worth building is written in the errors of the machines that already exist.”
The conviction
“We build the foundation — and everything that runs on it.”
The company
“I want India to be a place that builds these machines, not only a place that uses them.”
Founder