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Lightsynq

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Develops optical quantum interconnects to enable large-scale quantum computing

Boston, United StatesFounded 2024Semiconductors
Valuation $250–500M Last recorded · 2025
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Lightsynq and the history behind them.

About Lightsynq

Lightsynq Technologies Inc. is at the forefront of quantum computing innovation, developing cutting-edge diamond-based optical interconnects to address the scaling challenges in the field. The company's proprietary technology leverages color centers in diamonds, combining quantum networking capabilities with scalable manufacturing processes. Emerging from stealth mode with substantial Series A funding, Lightsynq is poised to make significant strides in enabling the linking of quantum processors. This breakthrough approach aims to overcome current bottlenecks in single-system scaling, paving the way for million-qubit systems. The company's solutions are designed to compensate for the lossy channels between processors, a key issue in current quantum computing architectures. Lightsynq's work is critical for realizing the commercial potential of quantum computing across various sectors, including chemistry, healthcare, and cybersecurity. With strategic backing from industry leaders and a team comprised of Harvard quantum networking experts and former AWS Center for Quantum Networking leaders, Lightsynq is well-positioned to drive advancements in quantum interconnect technology and contribute to the broader evolution of quantum computing.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2024
Headquarters
Boston, United States
Employees
1
Open positions
None listed
Dealroom signal
55.5/100
Sector
Semiconductors, Quantum Computing, Spinout, Quantum Computers, Semiconductor Designers and Manufacturers, Chips and Processors, Quantum Photonic Chips and Processors, NIF defense security and resilience, NIF Security of Critical Technologies, DT and LS
Technology
Hardware, Deep Tech, Quantum Technologies
Business model
Manufacturing
Client focus
b2b

Funding history

3 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITION✓Exit May 2025 $0 — IonQ ↗
SPINOUT✓Other financing Nov 2024 $0 — Harvard University —
Showing the latest 2 of 3 recorded eventsBook a demo for the full funding history →

Growth signals

Lightsynq website traffic

Latest recorded traffic for Lightsynq is 2.1K monthly website visits, up 75% over the last three months.

Latest monthly visits2.1K 3-month web change+75%
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

8 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A6 investors entered at this stage

  • Cerberus Capital Management
  • QVT Financial LP
  • IAG Capital Partners
  • In-Q-Tel
  • Safar Partners
  • Element Six

Other known investors2 additional known investors

  • Harvard University
  • IonQ
Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Lightsynq on X, ranked by likes and reposts, corporate channels excluded.

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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