Complex problems need powerful computing

We make it possible for everyone to think bigger, create faster, and see further. By infusing AI and machine learning, our quantum solutions give you the power to solve the world’s most important and pressing problems.

The Machine

1Shell

When the computer is operational, five casings (like the white one shown at the top of the image) envelop the machine. These cans nest inside each other and act as thermal shields, keeping everything super cold and vacuum-sealed inside.

The Machine

2Nerves

These photon-carrying cables deliver signals to and from the chip to drive qubit operations and return the measured results.

The Machine

3Heart

Beneath the heat exchangers sits the “mixing chamber.” Inside, different forms of liquid helium—helium-3 and helium-4—separate and evaporate, diffusing the heat.

The Machine

4Skeleton

These gold plates separate cooling zones. At the bottom, they plunge to one-hundredth of a Kelvin—hundreds of times as cold as outer space.

The Machine

5Brain

The QPU (quantum processing unit) features a gold-plated copper disk with a silicon chip inside that contains the machine’s brain.

Think quantum

Complex problems need powerful computing

The Machine

1Shell

2Nerves

These photon-carrying cables deliver signals to and from the chip to drive qubit operations and return the measured results.

3Heart

Beneath the heat exchangers sits the “mixing chamber.” Inside, different forms of liquid helium—helium-3 and helium-4—separate and evaporate, diffusing the heat.

4Skeleton

These gold plates separate cooling zones. At the bottom, they plunge to one-hundredth of a Kelvin—hundreds of times as cold as outer space.

5Brain

The QPU (quantum processing unit) features a gold-plated copper disk with a silicon chip inside that contains the machine’s brain.

Rigetti Right Now

Aspen-M-3		Median Time Duration (µs)		Median Fidelity (per op.)
Deployed	12.02.22	T1 Lifetime	22	Single-qubit gates	99.9%
Qubits	80	T2 Lifetime	24	Two-qubit gates (CZ)	90.6%
				Two-qubit gates (XY)	91.8%

Aspen-M-3

Deployed

12.02.22

Qubits

Median Time Duration

T1 Lifetime

T2 Lifetime

Median Fidelity (per op.)

Single-qubit Gates

99.9%

Two-qubit gates (CZ)

90.6%

Two-qubit gates (XY)

91.8%

Running on Rigetti

Technology Partners

Distribution Channels

The latest in quantum thinking

Algorithms & Applications

21.08.23

Evaluating quantum generative models via imbalanced data classification benchmarks

A limited set of tools exist for assessing whether the behavior of quantum machine learning models diverges from conventional models, outside of abstract or theoretical settings. We present a systematic application of explainable artificial intelligence techniques to analyze synthetic data generated from a hybrid quantum-classical neural network adapted from twenty different real-world data sets, including solar flares, cardiac arrhythmia, and speech data.

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Systems R&D

18.08.23

Modular superconducting qubit architecture with a multi-chip tunable coupler

We use a floating tunable coupler to mediate interactions between qubits on separate chips to build a modular architecture. We demonstrate three different designs of multi-chip tunable couplers using vacuum gap capacitors or superconducting indium bump bonds to connect the coupler to a microwave line on a common substrate and then connect to the qubit on the next chip.

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Algorithms & Applications

18.08.23

Design and execution of quantum circuits using tens of superconducting qubits and thousands of gates for dense Ising optimization problems

We develop a hardware-efficient ansatz for variational optimization, derived from existing ansatze in the literature, that parametrizes subsets of all interactions in the Cost Hamiltonian in each layer. We treat gate orderings as a variational parameter and observe that doing so can provide significant performance boosts in experiments. We carried out experimental runs of a compilation-optimized implementation of fully-connected Sherrington-Kirkpatrick Hamiltonians on a 50-qubit linear-chain subsystem of Rigetti Aspen-M-3 transmon processor.

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Algorithms & Applications

11.07.23

Quantum relax-and-round algorithm for combinatorial optimization

We introduce a relax-and-round approach embedding the quantum approximate optimization algorithm (QAOA) with p≥1 layers.

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Keep exploring

Learn how quantum can help you solve problems and energize your innovation.

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