The first domain · Quantum control

Control

Fast, high-fidelity gates on every kind of qubit.

Most tools need you to hand them a pulse. Ours designs it for you — from a model of your hardware and the gate you want — using the same optimization machinery that plans motion for spacecraft and robots. Your hardware's real limits are built in from the start, not bolted on afterward.

Autonomous research needs a physical system that outruns its models, a score only the hardware can settle, and experiments fast enough to turn the loop thousands of times a day. Quantum control is all three. This is where we start. The loop, and where it goes next

> 99.9%
Transmon gate fidelities with direct collocation (Trowbridge et al. 2023)
Median error suppression on 127-qubit IBM hardware (Goldschmidt et al. 2026)
6
Qubit modalities — transmon, fluxonium, neutral atom, silicon spin, trapped ion, bosonic

How it works

Designed, not searched

Piccolo solves for the whole pulse at once, instead of nudging it step by step like older methods. That's why it converges where they stall — and returns smooth pulses your hardware can actually play.

Whole-circuit compilation

Legato compiles entire circuit blocks straight to pulses, each layer optimized against the next — so an error-correction block runs as one pulse instead of a long sequence of gates.

Hardware-native output

Pulses export as ready-to-run waveforms — including first-class support for QICK, developed with Fermilab — and reuse your past results to make every new solve faster.

Research

Make Your Quantum Hardware Do More Than It Was Designed To Do.

Neutral atoms · Rydberg arrays

Most quantum hardware gives you a fixed set of native interactions. Direct optimization methods engineer the interactions your hardware doesn't natively support — without new chips, new lasers, or new atoms. Waveforms solved from first principles, not shaped by hand.

We recently helped prove this is possible. Harmoniqs co-authored the proof that global pulse control is universal for analog quantum simulators. Then we built the stack that proves it works.

Piccolo delivered the control pulses behind the first realization of effective three-body interactions outside the blockade regime — outperforming 300 randomly initialized GRAPE runs on the same hardware-constrained Rydberg problem. The same optimizer handles Rydberg, trapped-ion, fermionic, and bosonic platforms without per-platform retuning.

If you're pushing the limits of what your device can do, we'd like to talk.

Organization

Harvard University

Paper

arXiv:2508.19075 · Aug 2025

Read the paper

What this means for you

  • Get more out of existing hardware — no hardware changes required.
  • Unlock gate and simulation capabilities beyond your native Hamiltonian.
  • Replace brittle pulse optimization with methods that converge where standard tools stall.
  • Works across platforms: neutral atoms, trapped ions, superconducting qubits, ultracold-atom simulators.

See it run on real hardware.

From problem definition to a calibrated, hardware-native pulse — optimized with Piccolo and ready to deploy. Start with a single-qubit gate and scale to the systems your roadmap demands.