When was Quantum Circuits founded?

Quantum Circuits was founded in 2015 and raised its 1st funding round 2 years after it was founded.

Where is Quantum Circuits located?

Quantum Circuits is headquartered in New Haven, United States. It is registered at New Haven, Connecticut.

How many employees does Quantum Circuits have?

As of Nov 13, 2025, the latest employee count at Quantum Circuits is 80.

Is Quantum Circuits a funded company?

Quantum Circuits is a funded company, having raised a total of $105M across 3 funding rounds to date. The company's 1st funding round was a $***** Series A round, raised on Nov 13, 2017.

When was the latest funding round of Quantum Circuits?

Quantum Circuits' latest funding was a $***** Series B round on Aug 15, 2024, with participation from 11 investors. Its primary sector is Quantum Computing. In United States, the Quantum Computing sector has seen $551M in funding in 2026 to date.

Where does Quantum Circuits rank among its competitors?

Quantum Circuits ranks 4th amongst 18 active competitors, of which 6 are funded. It stands 5th in terms of total funding among its competitors. The most recent competitor to raise funding was D-Wave, which secured $100M in Sep, 2026.

Who are the top competitors of Quantum Circuits?

Quantum Circuits' top competitors include D-Wave, Rigetti Computing and Atlantic Quantum. Among them, D-Wave secured the most recent funding round in September, 2026.

Quantum Circuits - 2026 Company Profile, Team, Funding & Competitors

Q: Is Quantum Circuits an acquired company?

Quantum Circuits got acquired by D-Wave on Jan 07, 2026.

Company Details

Quantum Circuits Inc. is a Yale University spin-off that designs superconducting quantum computing systems. It intends to develop modular quantum computers that can be reconfigured multiple times to function as computing systems for drug discovery and genetics, financial applications, industrial design functions, etc. As of November 2017, its products include hardware such as quantum-limited parametric amplifiers and other hardware devices. It intends to use its Series A funding round to build larger software teams as well.

Website: quantumcircuits.com
Phone Number: +1 **********
Registered Address: New Haven, Connecticut

Key Metrics

Founded Year

2015

Location

New Haven, United States

Stage

Acquired

Total Funding

$105M in 3 rounds

Latest Funding Round

Series B, Aug 15, 2024, $*****

Investors

Sequoia Capital & 10 more

Ranked

4^th among 18 active competitors

Employee Count

80 as on Nov 13, 2025

Similar Companies

D-Wave & 16 more

Exit Details

Acquired by D-Wave (Jan 07, 2026)

View Quantum Circuits' full profile

Quantum Circuits is associated with 2 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Reports
QUANTUM CIRCUITS, INC. CIN: 001t000000Wnzz0AAB , United States, Active	Mar 10, 2016	$1 - $1M (As on Mar 17, 2016)	-	-
QUANTUM CIRCUITS CIN: 475141613 , United States, Active	Dec 31, 1999	-	60 (As on Dec 31, 2024)	-

Quantum Circuits got acquired by D-Wave on Jan 07, 2026 at an acquisition amount of $*****.

Click here to take a look at Quantum Circuits's acquisition in detail

Quantum Circuits has raised a total funding of $105M over 3 rounds. Its first funding round was on Nov 13, 2017. Its latest funding round was a Series B round on Aug 15, 2024 for $*****. 11 investors participated in its latest round. Quantum Circuits has 11 institutional investors.

Here is the list of recent funding rounds of Quantum Circuits:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Aug 15, 2024	3206001	Series B	5748735	2050051	2867696	4130481
Feb 09, 2024	7144235	Series B	9265515	1281088	8273475	Sequoia Capital
Nov 13, 2017	5810253	Series A	1634575	6196755	Canaan & 1 more	Tribeca Venture Partners & 2 more

Access funding benchmarks and valuations. Sign up today!

View details of Quantum Circuits's funding rounds and investors

The founders of Quantum Circuits are Luigi Frunzio, Brian W. Pusch, Robert Schoelkopf and Michel Devoret.

Here are the details of Quantum Circuits' key team members:

Luigi Frunzio: Co-Founder of Quantum Circuits.
Contact Info: 1 email address
Brian W. Pusch: Co-Founder & President of Quantum Circuits.
Contact Info: 1 email address
Robert Schoelkopf: Co-Founder of Quantum Circuits.
Contact Info: 1 email address
Michel Devoret: Co-Founder & CSO of Quantum Circuits.
Contact Info: 1 email address

View details of Quantum Circuits's Founder profiles and Board Members

Quantum Circuits' employee count trend

Quantum Circuits has 80 employees as of Nov 25. Here is Quantum Circuits's employee count trend over the years:

Employee count trend for Quantum Circuits

Uncover Quantum Circuits' growth story! Sign up today!

Access Tracxn on any website

Our Google Chrome extension lets you view company details while browsing their websites

Install Tracxn Extension

Top competitors of Quantum Circuits include D-Wave, Rigetti Computing and Atlantic Quantum. Here is the list of Top 10 competitors of Quantum Circuits, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	D-Wave 1999, Burnaby (Canada), Public	Developer and delivery of quantum computing systems, software, and services	$256M	Goldman Sachs, PSP Investments & 27 others	72/100
2nd	Rigetti Computing 2013, Berkeley (United States), Public	Developer of an AI-powered full-stack quantum computing solution based on superconducting qubits	$198M	AME Cloud Ventures, Susa Ventures & 51 others	65/100
3rd	Atlantic Quantum 2022, Cambridge (United States), Seed	Developer of quantum computers for computations and processing information	$9M	Engine Ventures, Glasswing Ventures & 6 others	62/100
4th	Quantum Circuits 2015, New Haven (United States), Acquired	Develops quantum computers using superconducting quantum circuits	$105M	Canaan, F-Prime Capital & 9 others	61/100
5th	Oqc Tech 2017, Reading (United Kingdom), Series C	Developer of quantum computing hardware for commercial and research applications	$500M	Lansdowne Partners, UTEC & 22 others	59/100
6th	Alice&Bob 2020, Paris (France), Series B	Manufacturer of superconducting qubit-based universal quantum computers	$138M	Elaia, Bpifrance & 9 others	59/100
7th	Nord Quantique 2020, Sherbrooke (Canada), Series A	Manufacturer of superconducting qubits	$37.5M	Quantonation, BDC & 7 others	51/100
8th	QuamCore 2023, Herzliya (Israel), Series A	Developer of scalable quantum computing architecture and superconducting quantum processors	$35M	Viola Group, Earth & Beyond Ventures & 8 others	49/100
9th	Logical Qubit Technology 2022, Hangzhou (China), Series A	Developer of superconducting quantum processors and modular quantum computing solutions	-	Chaos Investment, Bayland Capital & 16 others	29/100
10th	Anyon Computing 2020, Emeryville (United States), Unfunded	Developer of integrated quantum computing systems and hybrid quantum applications	-	-	28/100