Quantum Source

Developing a photonic quantum architecture for fault-tolerant, practical quantum computers that can scale to millions of qubits.

Industrial Technologies

registrar: מחוסלת מרצון

Series A Rehovot, Israel Founded 2021

Website ↗ LinkedIn

Last updated 2026-07-19

Raised $50M Series A led by Eclipse Ventures, Sep 2024
Raised $12M Seed Extension led by Dell Technologies Capital, Apr 2023
Raised $15M Seed round led by Eclipse Ventures, Jul 2022

Total raised

$77.0M

Last: A Round 2024-09

Stage

Series A

Founded

2021

Headcount

Rehovot, Israel

Sector

Industrial Technologies

About

Quantum Source is an Israeli startup developing technology for powerful, cost-effective, and practical photonic quantum computers. Their novel architecture, designed around chip-based photon-atom gates, provides a clear path to the most powerful fault-tolerant quantum computer. The company's technology enables deterministic generation of photons and entangling gates, addressing major roadblocks such as scalability, complexity, and cost-efficiency. Founded in 2021, their approach is built upon two decades of research at the Weizmann Institute of Science and recent breakthroughs in photonic technologies. Quantum Source aims to bring universal quantum computers to a size that fits in a server rack, rather than requiring factory-sized facilities.

Funding history · 3 rounds · $77.0M total

2024-09

A Round $50.0M

★ Eclipse VenturesStandard InvestmentsLevel VCCanon EquityPitango FirstGrove Ventures10D FundsDell Technologies CapitalGreenoaks CapitalHumba Ventures

2023-04

Seed Extension $12.0M

★ Dell Technologies CapitalAndreessen HorowitzCyberstarts VCEclipse VenturesGrove VenturesM12Pitango Venture CapitalRace CapitalSoftbank GroupViola VenturesAryeh MergiTony Jamous10D Funds

2022-07

Seed $15.0M

★ Eclipse Ventures★ Grove Ventures★ Pitango FirstDell Technologies CapitalPitango Venture Capital

Headcount over time

From 3 (2022-01) to 59 (2026-03) · +56 (+1867%) · 28 points · source: Finder history + radar grounding

Q&A

What is Quantum Source's primary focus?: Quantum Source is focused on developing powerful, cost-effective, and fault-tolerant photonic quantum computers, utilizing a unique photon-atom gate architecture.
When was Quantum Source founded and where is its headquarters located?: Quantum Source was founded in 2021 and is headquartered in Rehovot, Israel.
What was Quantum Source's most recent funding round?: In September 2024, Quantum Source secured a Series A funding round of $50 million, led by.
What is the total amount of funding Quantum Source has raised to date?: Quantum Source has raised a total of $77 million in funding.
Who are the co-founders of Quantum Source?: The co-founders of Quantum Source are Oded Melamed (Co-founder & CEO), Dan Charash (Co-founder & Chairman), Prof. Barak Dayan (Co-founder & Chief Scientist), and Gil Semo (Co-founder & VP R&D).
Who are some notable members of Quantum Source's board of directors?: Notable board members include Naftali Bennett, Ayal Itzkovitz (Managing Partner, Pitango First), Seth Winterroth (Partner, Eclipse Ventures), and Dov Moran.
How many employees does Quantum Source have?: Quantum Source has an employee count in the 51-200 range.
What was a significant recognition Quantum Source received recently?: In June 2026, Quantum Source was chosen as the "Favorite 2026 Startup" by Globes Readers.