Rigetti Computing

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Rigetti Computing, Inc.
Company typePublic
IndustryQuantum computing
Founded2013 Edit this on Wikidata
FounderChad Rigetti
HeadquartersBerkeley, California, United States
Key people
Subodh Kulkarni (CEO)
ProductsQuantum integrated circuits
Forest quantum computing software
RevenueDecrease US$12 million (2023)
Number of employees
134 (2024)
Footnotes / references

Rigetti Computing, Inc. is a Berkeley, California-based developer of quantum integrated circuits used for quantum computers. The company also develops a cloud platform called Forest that enables programmers to write quantum algorithms.[2]


Traces of Rigetti Computing can be dated back to 1980, however the company was officially founded in 2013.

Rigetti Computing was founded in 2013 by Chad Rigetti, a physicist who previously worked on quantum computers at IBM, and studied under Michel Devoret.[2][3] The company emerged from startup incubator Y Combinator in 2014 as a so-called "spaceshot" company.[4][5] The company also went through enterprise revenue-focused The Alchemist Accelerator in 2014.[5]

By February 2016, the company had begun testing a three-qubit (quantum bit) chip made using aluminum circuits on a silicon wafer.[6] In March, the company raised Series A funding of US$24 million in a round led by Andreessen Horowitz. In November, the company raised 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 was a smaller investor in both rounds.[5]

By Spring of 2017, the company was testing eight-qubit computers,[3] and in June, the company announced the public beta availability of a quantum cloud computing platform called Forest 1.0, which allows developers to write quantum algorithms.[2]

In October 2021, it was announced that the company planned to go public via a SPAC merger, with estimated valuation around $1.5 billion.[7][8] This process was expected to raise an addition $458 million in funding, in addition to the $200 million raised previously.[7] With this funding, Rigetti planned to scale its systems from 80 qubits to 1,000 qubits by 2024, and to 4,000 by 2026.[9] The SPAC deal closed on 2 March 2022, and the company shares began trading on the NASDAQ exchange.[10]

In December 2022, Subodh Kulkarni became president and CEO of the company.[11]

In July 2023 Rigetti launched a single chip 84 qubit quantum processor that can scale to larger systems.[12]

Products and technology[edit]

Rigetti Computing is a full-stack quantum computing company, a term that indicates that the company designs and fabricates quantum chips, integrates them with a controlling architecture, and develops software for programmers to use to build algorithms for the chips.[13]

Forest cloud computing platform[edit]

The company hosts a cloud computing platform called Forest, which gives developers access to quantum processors so they can write quantum algorithms for testing purposes. The computing platform is based on a custom instruction language the company developed called Quil, which stands for Quantum Instruction Language. Quil facilitates hybrid quantum/classical computing, and programs can be built and executed using open source Python tools.[13][14] As of June 2017, the platform allows coders to write quantum algorithms for a simulation of a quantum chip with 36 qubits.[2]


The company operates a rapid prototyping fabrication ("fab") lab called Fab-1, designed to quickly create integrated circuits. Lab engineers design and generate experimental designs for 3D-integrated quantum circuits for qubit-based quantum hardware.[13]


The company was recognized in 2016 by X-Prize founder Peter Diamandis as being one of the three leaders in the quantum computing space, along with IBM and Google.[15] MIT Technology Review named the company one of the 50 smartest companies of 2017.[16]

See also[edit]


Rigetti Computing is headquartered in Berkeley, California, where it hosts developmental systems and cooling equipment.[15] The company also operates its Fab-1 manufacturing facility in nearby Fremont.[2]


  1. ^ "Rigetti Computing Inc. 2023 Annual Report (Form 10-K)". U.S. Securities and Exchange Commission. March 14, 2024.
  2. ^ a b c d e "The Quantum Computer Factory That's Taking on Google and IBM". wired.com. 2017-06-20. Retrieved 2017-07-20.
  3. ^ a b "A quantum leap of faith" (PDF). uregina.com. 2017-06-20. Retrieved 2017-07-20.
  4. ^ "11 startups to watch from Y Combinator's Demo Day". bizjournals.com. Silicon Valley Business Journal. 2014-08-20. Retrieved 2017-07-20.
  5. ^ a b c "Y Combinator's quantum computing 'spaceshot' scores $64M from A16Z, others". bizjournals.com. Silicon Valley Business Journal. 2017-03-29. Retrieved 2017-07-20.
  6. ^ "The Tiny Startup Racing Google to Build a Quantum Computing Chip". technologyreview.com. 2016-02-08. Retrieved 2017-07-20.
  7. ^ a b "Rigetti Announces SPAC Deal with Supernova II". Rigetti. Retrieved 2021-10-11.
  8. ^ Lee, Jane Lanhee (2021-10-06). "Quantum computer maker Rigetti to go public via $1.5 bln SPAC deal". Reuters. Retrieved 2021-10-11.
  9. ^ "Quantum-Computing Company Rigetti to Go Public Through SPAC Deal". MarketWatch. Retrieved 2021-10-11.
  10. ^ "Rigetti Computing Announces Closing of Business Combination with Supernova Partners Acquisition Company II, Ltd.; Begins Trading on Nasdaq Capital Market Today". globenewswire.com (Press release). 2 March 2022.
  11. ^ "Dr. Subodh Kulkarni | Rigetti Computing". Rigetti. Retrieved 2023-07-11.
  12. ^ "Rigetti launches 84qubit single chip quantum processor". August 11, 2023.
  13. ^ a b c "Rigetti Launches Full-Stack Quantum Computing Service and Quantum IC Fab". ieee.org. 2017-06-26. Retrieved 2017-07-20.
  14. ^ "Welcome to pyQuil!". readthedocs.io. Retrieved 2017-07-20.
  15. ^ a b Md, Peter H. Diamandis (2010-10-16). "Massive Disruption Is Coming With Quantum Computing". Singularity Hub. Retrieved 2017-07-20.
  16. ^ "50 Smartest Companies 2017". technologyreview.com. Retrieved 2017-07-20.

External links[edit]

  • Official website
  • Business data for Rigetti Computing: