Rigetti Computing, Inc.

Rigetti Computing was founded in 2013 by Chad Rigetti, a physicist with a background in quantum computers from IBM who studied under Michel Devoret. Chad Rigetti has authored more than 140 publications in the fields of quantum mechanics and quantum computing. Rigetti Computing received funding from startup incubator Y Combinator in 2014 as a so-called "spaceshot" company. Later that year, Rigetti also participated in The Alchemist Accelerator, a venture capital programme.

By February 2016, Rigetti created its first quantum processor, a three- qubit chip made using aluminum circuits on a silicon wafer. That same year, Rigetti raised Series A funding of US$24 million in a round led by Andreessen Horowitz. In November, the company secured Series B funding of $40 million in a round led by investment firm Vy Capital, along with additional funding from Andreessen Horowitz and other investors. Y Combinator also participated in both rounds.

By Spring of 2017, Rigetti had advanced to testing eight-qubit quantum computers. In June, the company announced the release of Forest 1.0, a quantum computing platform designed to enable developers to create quantum algorithms. This was a major milestone.

In October 2021, Rigetti announced plans to go public via a SPAC merger, with estimated valuation of around US$1.5 billion. This deal was expected to raise an additional US$458 million, bringing the total funding to US$658 million. The fund will be used to accelerate the company's growth, including scaling its quantum processors from 80 qubits to 1,000 qubits by 2024, and to 4,000 by 2026. The SPAC deal closed on 2 March 2022, and Rigetti began trading on the NASDAQ under the ticker symbol RGTI.

In December 2022, Subodh Kulkarni became president and CEO of the company.

In July 2023 Rigetti launched a single-chip 84 qubit quantum processor that it believes can scale to larger systems.

In October 2025, Rigetti was one of several quantum-computing companies reported to be involved in discussions with the Trump administration to secure federal funding in exchange for equity stakes.

In May 2026, Rigetti will receive up to $100 million in planned funding under the CHIPS and Science Act to address key technical challenges to develop and scale next generation superconducting quantum computing technologies and architectures, such as miniaturizing and integrating novel readout electronics and next generation cryostat architectures.