About us

On a Mission to Democratize Quantum Computing

Useful quantum computers are coming — but the hardware is still noisy, slow, and expensive. Quantum Rings bridges the gap: large-scale simulation on hardware you already own, with a one-line path to real QPUs when you need them.

15M+

Circuits executed

8,000+

Users

250+

Universities

10B+

Gate operations

What we believe

Bridging the Quantum Gap

Simulation Is the Starting Point

A clean environment where your code is the only variable — no hardware noise, no queues, no shot budgets. Build the IP and intuition you can own today.

One Line to Real Hardware

The jump from simulation to a real QPU should be a single line of code. Through Open Quantum, it is.

Quantum for Everyone

Free large-scale simulation for academics, a free 14-lesson course, and an ambassador program — so the next generation can build now.

Leadership team

A Combined Century of Building Emerging Tech

Quantum Rings is built by veterans of quantum, enterprise technology, and cloud infrastructure.

Bob Wold

Co-Founder & CEO

Spent 25+ years commercializing emerging technology, most recently as Corporate VP of Technology Innovation and Head of Quantum at Trimble. Came out of retirement to co-found Quantum Rings, and co-authored its Sycamore-simulation research.

Venkat Kasirajan

Co-Founder & CTO

Former VP of Technology Innovation at Trimble, Inc., with two decades of technical and executive leadership.

Author of Fundamentals of Quantum Computing: Theory and Practice — Springer · Amazon

Ryan Kuhn

Principal Cloud Engineer

Built and runs the cloud engineering team behind the Quantum Rings platform and Open Quantum. Previously at Trimble, and engineered secure, mission-critical systems at Northrop Grumman.

Omar Armbruster

Director of Operations

Physicist turned operator — Middlebury College physics & computer science, with research in machine-learning-driven computational physics. Keeps the company running day to day.

Backed by an advisory bench of former CTOs and CEOs, serial entrepreneurs, and startup operators. Based in Boulder, Colorado.

Published research

Backed by Published Research

Our claims aren’t marketing — they’re published, with methods and numbers anyone can check. We simulate Google’s “quantum supremacy” circuits on accessible hardware, with the fidelity and speedups to prove it.

arXiv · 2025

Revisiting Quantum Supremacy: Simulating Sycamore-Class Circuits Using Hybrid CPU/GPU HPC Workloads

B. Wold, V. Kasirajan

A hybrid NVIDIA A100 GPU + parallel-CPU pipeline simulates the 53-qubit, 20-cycle Sycamore circuit in 1h 15m — a 6.95×10⁷ speedup over Google’s original 10,000-year classical estimate — at 0.549 XEB fidelity, 274× Google’s reported 0.002.

6.95×10⁷

Speedup vs. Google’s estimate

0.549

XEB fidelity (vs. 0.002)

1h 15m

53-qubit, 20-cycle runtime

Read the paper

arXiv · 2024

Empowering Large-Scale Quantum Circuit Development: Effective Simulation of Sycamore Circuits

V. Kasirajan, T. Battelle, B. Wold

Google’s random-circuit-sampling “quantum supremacy” circuits simulated with high fidelity on classical systems commonly available to developers — an average XEB score of 0.678, exceeding values reported for the same circuits.

Google RCS (supremacy)

Circuits