IonQ logo

IonQ

The world's leading quantum platform and foundry

1353 employees · est. 2015 · College Park, United States

VS
QphoX logo

QphoX

The Gateway to scalable Quantum Computing

30 employees · est. 2021 · Delft, The Netherlands

IonQ is the older company (2015 vs 2021); IonQ is the larger of the two.

Side-by-Side Comparison

IonQ QphoX
Founded
2015 older 2021
Headquarters
College Park, United States Delft, The Netherlands
Employees
1353 larger 30
Industry
IT, Information Technology, Quantum Hardware, IT
Funding Stage
Corporate Series Unknown
Total Funding
$10.80B $12.50M
Funding Rounds
8 3
Services
Commercial quantum computers, Quantum networking and security, Quantum sensing applications, Quantum cloud access Development and production of quantum transduction devices for quantum networking and computing
Target Customers
Healthcare and pharmaceutical companies, Automotive manufacturers, Cloud service providers, Government and enterprise organizations Tech companies, research institutions, and organizations involved in quantum computing and networking
Taxonomy
Quantum Computing, Quantum Networking, Quantum Sensing, Quantum Security, Trapped Ion Technology, Quantum Algorithms, Drug Discovery, Materials Science, Financial Modeling, Quantum Hardware, Quantum Software, Defense Solutions, AI And Machine Learning Quantum Computing, Quantum Technology, Quantum Networking, Quantum Modem, Transduction Technology, Quantum Internet, Advanced Networking, Hardware Development, Quantum Communication, Telecommunication, Innovation, Start-up, Investment Opportunity
Website
ionq.com qphox.eu
IonQ logo

About IonQ

IonQ, Inc. [NYSE: IONQ] stands as a pioneering force in the quantum technology sector, epitomizing its slogan: The world's leading quantum platform and merchant supplier: quantum computing, networking, sensing, and security. Founded in 2015 and headquartered in the United States, the company has est...

QphoX logo

About QphoX

QphoX, founded in 2021, is pioneering advancements in the emerging field of quantum computing. With its headquarters in The Netherlands, the company focuses on developing a revolutionary quantum transduction technology. Their flagship product, the world's first quantum modem™, is poised to connect q...

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Funding, hiring, leadership and stack changes at IonQ and QphoX — by email.

Frequently Asked Questions

IonQ — The world's leading quantum platform and foundry. QphoX — The Gateway to scalable Quantum Computing. Both companies operate in related markets but may differ in funding stage, team size, and product focus.
IonQ has raised $10.80B while QphoX has raised $12.50M.
IonQ and QphoX operate in overlapping markets and are frequently compared. Track both companies on Bounce Watch to monitor their growth signals in real time.

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Compiled from the BounceWatch company index. We last looked at IonQ on 16 Apr 2026, and QphoX on 1 Dec 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.

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