Chad Rigetti
InvestorUnicorn founderFounder/CEO at Rigetti Quantum Computing · Venture Partner at QDNL Participations · Founder at Sygaldry Technologies
Silicon Valley
FoundedRigetti Quantum Computing$4.9B · YCSygaldry Technologies · YC
About
Quantum computing pioneer and founder of Rigetti Computing who joined QDNL Participations as a Venture Partner in summer 2023, providing the firm with a foothold in Silicon Valley.
Contact· self-published, not guessed
Invests in
Quantum Computing
Founder at Sygaldry TechnologiesYC X25
Intro paths
YC
Chad went through Y Combinator (Spring 2025) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Sygaldry Technologies's batch and knows the company first-hand. YC profile ↗
→
In turn, Chad can intro founders to Sygaldry Technologies's investors below.
Sygaldry Technologies's investors · 15
468 CapitalBerlin · since 2026Breakthrough Energy VenturesBoston · $500K – $50M checks · since 2026Earth Venture Capitalsince 2026ExpeditionsWarsaw · since 2026Garage CapitalWaterloo · since 2026Initialized CapitalSan Francisco · $1M – $5M checks · since 2026Lombardstreet VenturesWoodside · $500K checks · since 2026MVP VenturesChicago · since 2026Olive Tree CapitalBoston · since 2026Page One VenturesSilicon Valley · since 2026Qubits VenturesPasadena · since 2026SquareOne CapitalMiami · since 2026Western Technology InvestmentPortola Valley · $250K – $30M checks · since 2026Y CombinatorSan Francisco · $500K checks · since 2025ZAKA VCSan Francisco · since 2026
Co-founders at Sygaldry Technologies
IF
Idalia FriedsonFounder
Founder/CEO at Rigetti Quantum ComputingYC S14
Intro paths
YC
Chad went through Y Combinator (Summer 2014) — any YC alum in your network can reach them through the YC community.
→
In turn, Chad can intro founders to Rigetti Quantum Computing's investors below.
Rigetti Quantum Computing's investors · 20
Alchemist AcceleratorSan Francisco · $30K checksAlpha Intelligence CapitalSan FranciscoAME Cloud VenturesPalo Alto · $1M – $10M checksAndreessen HorowitzMenlo Park · $500K – $50M checksBessemer Venture PartnersRedwood City · $5M – $100M checksDCVC (Data Collective)Palo Alto · $5M – $25M checksDraper AssociatesSan Mateo · $500K – $5M checksFelicis VenturesSan Francisco · $500K – $15M checksIn-Q-TelTysons · $100K – $2.5M checksIntegra PartnersSingapore · $1.5M – $18M checksLux CapitalNew York · $100K – $100M checksMorpheus VenturesSherman Oaks · $1M – $10M checksRuna CapitalSofia · $500K – $5M checksStrawberry Creek VenturesManchesterStreamlined VenturesPalo Alto · $100K – $1M checksSummer CapitalCharlestonU.S. Air Forcesince 2019Vy CapitalDubaiWorldQuant VenturesOld GreenwichY CombinatorSan Francisco · $500K checks · since 2014
Experience
- Sygaldry TechnologiesCEO and co-foundercurrent2024 — present
- Ground State VenturesPartnercurrent2023 — present
- Rigetti Quantum ComputingFounder and CEO2013 — 2022Berkeley, CA
- IBMResearch Staff Member, Quantum Computing Group2010 — 2013Yorktown Heights, NY
- Yale University, Applied PhysicsPhD Student2002 — 2009
- IntradeVP Business Development2008
Skills & more
Python4Mathematica26LaTeX9Java6Matlab22ANSYS2C++5Cryogenics8Experimental Physics11Machine Learning4Physics18Theory5
+12 more
ResearchMathematical ModelingQuantum InformationQuantum ComputingSemiconductorsThin FilmsAlgorithmsMaterials ScienceNanotechnologySimulationsR&DBusiness DevelopmentLanguages English · French
From Chad's professional profile.
Podcasts & interviews
featuring Chad RigettiQuantum computing with Chad Rigetti
Y Combinator
Colleagues at QDNL Participations
Frequently asked questions
- Who is Chad Rigetti?
- Quantum computing pioneer and founder of Rigetti Computing who joined QDNL Participations as a Venture Partner in summer 2023, providing the firm with a foothold in Silicon Valley.
- Where does Chad Rigetti work?
- Chad Rigetti is Founder/CEO of Rigetti Quantum Computing and Venture Partner at QDNL Participations and Founder at Sygaldry Technologies.
- What does Chad Rigetti invest in?
- Chad Rigetti invests in Quantum Computing.
- What companies did Chad Rigetti found?
- Chad Rigetti founded Rigetti Quantum Computing, Sygaldry Technologies.
- Where did Chad Rigetti go to school?
- Chad Rigetti studied at Yale University (PhD, Applied Physics); University of Regina (B.Sc Honours, Physics).
- What podcasts and interviews feature Chad Rigetti?
- Tracked appearances include "Quantum computing with Chad Rigetti".
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
Yale University mafia190
Also came through, then founded or led a company.
Michael SeibelBAFounded SocialCamBen SilbermannB.A.Founded Audiobeta +2Justin KanPhysics and PhilosophyFounded Stash +6Kevin RyanBAFounded Business Insider +2Harry GrunerFounded Hilos +2Emmett ShearBSFounded Softmax +2
+ 183 more
Rigetti Computing mafia4
Also came through, then founded or led a company.
University of Regina mafia2
Also came through, then founded or led a company.
Same school
Also attended Yale University651
Ann Miura-KoCo-founding Partner at FloodgateDavid SzeAdvisory Partner at GreylockMichael SeibelPartner Emeritus at Y CombinatorBen SilbermannCo-founder of PinterestZheela QaiserInvestor at Index VenturesAnthony PhilippakisInvestor at GV (Google Ventures)
+ 645 more
Also attended University of Regina12
Jordan McFarlenManaging Director at Conexus Venture CapitalKevin BlackHead of Advisor Sales at Purpose InvestmentsRick HoffmanDirector at Verdex CapitalBeth CiavagliaInvestor at SheBootGabrielle SchubachManager, VC Finance & Operations at Conexus Venture CapitalJanessa FoxController at Emmertech
+ 6 more
Shared employers
Also worked at Sygaldry Technologies8
Joseph MillerInvestor at Morpheus VenturesMo El-BibanyGeneral Partner at Page One VenturesAli TamasebGeneral Partner at DCVC (Data Collective)Daniel DartGeneral Partner at Rock Yard VenturesAlex BangashManaging Director and General Partner at Transpose Platform ManagementMohamed SolimanCo-Founding & Managing Partner at Ventioneers Capital
+ 2 more
Also worked at Ground State Ventures7
Heleen Dura – van OordEntrepreneur and investorBart MulSenior Investment Manager at BOMBas GodskaPartner at Acrobator VenturesTon van 't NoordendeGeneral Partner at QDNL ParticipationsKris KaczmarekInvestment Director at QDNL ParticipationsMichael A. JacksonGeneral Partner at QAI Ventures
+ 1 more
Also worked at Rigetti Quantum Computing10
Will ZengPartner at QuantonationTomer DiariInvestor at AlephDamien PettyInvestor at Morpheus VenturesDavid CowanPartner at Bessemer Venture PartnersCharlie PintoOperating Partner at Bling CapitalTerry ChouPartner at Alpha Intelligence Capital
+ 4 more
Also worked at IBM710
Brian ArmstrongCo-founder & CEO of CoinbaseOlivier PomelCo-founder & CEO of DatadogAlexis Le-QuocCo-founder & CTO of DatadogKen ChenaultInvestment Team at General CatalystRoger KrakoffGeneral Partner at Monta Vista CapitalAvi BharadwajInvestment Director at Intel Capital
+ 704 more