Quantum Circuits

Semiconductors · New Haven, United States · Founded 2015

Building quantum computers designed to scale

Valuation $500M–1B

Headcount <100

Total funding $100–500M

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Company overview

Quantum Circuits company information

The essential company record, classifications and operating signals in one place.

Status: Acquired
Founded: 2015
Headquarters: New Haven, United States
Employees: 27
Open positions: None listed
Dealroom signal: 60.7

Website ↗LinkedIn ↗X ↗

business modelManufacturingsectorQuantum ComputingsectorChipssectorSpinoutsectorSemiconductor Designers and ManufacturerssectorChips and ProcessorssectorQuantum Computers and ProcessorssectorPhotonics TechsectorNIF defense security and resiliencesectorNIF Security of Critical TechnologiessectorDT and LSsectorscience-basedindustrySemiconductorsclient focusb2b

Valuation & funding

Quantum Circuits funding history

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
ACQUISITIONOther financing	Jan 2026	$550M	$550M	D-Wave Quantum	↗
SERIES BOther financing	Aug 2024	$60M	$240M	Canaan · Osage University Partners · Connecticut Innovations · Tribeca Venture Partners	↗
SERIES BOther financing	May 2024	$27M	$106M	Sequoia	↗
SERIES AOther financing	Nov 2017	$18M	$72M	Fitz Gate Ventures · Sequoia · Canaan	↗
SEEDOther financing	Feb 2017	—	—	Fitz Gate Ventures	—
SPINOUTOther financing	Jan 2015			Yale University	—

Showing 6 recorded eventsUnlock the complete deal history →

Growth signals

Quantum Circuits website traffic

Latest recorded traffic for Quantum Circuits is 5.1K monthly website visits, down 42% over the last three months. Quantum Circuits's team declined 65.8% over the past year.

Latest monthly visits5.1K 3-month web change-42% 1-year team growth-65.8%

Monthly website visits105 observations · Jan 2017–Jul 2026

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Comparisons

Quantum Circuits compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Company	Headquarters	Status	Employees	Total funding	Valuation
ELeleQtronMicrowave-controlled, trapped-ion quantum computing.	Siegen, Germany	Operational	109	$82M	$251M
QQQuiX QuantumPhotonic quantum processors for universal quantum computers.	Enschede, Netherlands	Operational
PLplanqcCompany developing quantum computers	Garching bei München, Germany	Operational
QUQuantwareScalable superconducting quantum processors for quantum computers.	Delft, Netherlands	Operational
EQEqual1Develops and manufactures silicon-based, rack-mounted quantum computers designed for integration	Dublin, Ireland	Operational
QCQuEra ComputingA maker of advanced neutral-atoms based quantum computers, pushing the boundaries of what is possible in the industry	Boston, United States	Operational
ABAlice & BobAlice & Bob invented self-correcting Schrödinger cat qubits. Using self-correction, they can develop the first fault-tolerant commercial quantum computers that can perform any quantum algorithm	Paris, France	Operational
QMQuantum MotionScalable quantum computing processors using silicon CMOS technology	London, United Kingdom	Operational

Showing 8 of the closest matchesCompare every metric →

Talent graph

Quantum Circuits's talent

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Team profiled 8 named & role-tagged

Founders /100 quality score

Key operators 4 quality /100

Potential founders likely future founders

Startup mafia alumni-founded startups

Talent movements in · out past 12 months

Source: Dealroom Talent Intelligence.

Investors

13 investors on Quantum Circuits's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 1 investor entered at this stage

Fitz Gate Ventures

Series A 10 investors entered at this stage

Sequoia

Canaan

ARCH Venture Partners

F-Prime

Hither Creek Ventures

Osage University Partners

Connecticut Innovations

Tribeca Venture Partners

In-Q-Tel

Tao Capital Partners

Other known 2 additional known investors

D-Wave Quantum

Yale University

Global footprint

Where Quantum Circuits has talent and traffic

Workforce by country

1 countries with
team presence

🇺🇸 United States100%

1 country shown

In the news

Latest news about Quantum Circuits

Recent press, funding announcements, and product moves mentioning Quantum Circuits — open to read from the original sources.

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Market sentiment

What the market is saying about Quantum Circuits

An AI-synthesized read of the highest-engagement posts about Quantum Circuits on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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