What Does QUBT Actually Do -- and Is the Stock a Buy Right Now?

Key Points

• Quantum Computing aims to build photonic circuits, which leverage the quantum properties of light particles.

• The company has a lot of work to do to make an exciting story a reality.

• The stock's valuation may be challenging to accept at the moment.

• 10 stocks we like better than Quantum Computing ›

Companies are racing to develop quantum technology to power new and future applications, ensuring the progress of innovation over the coming decades. Someday, the quantum computing market could be worth hundreds of billions.

Among them is Quantum Computing Inc. (NASDAQ: QUBT), which, despite its name, differs from the other quantum computing stocks on the market.

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It's not a pure-play on quantum computers, but rather on light-based technology, which manipulates photons -- particles of light -- to achieve high computing performance. The company outlined a business path that, if successful, could be a game-changer.

So, what does the company actually do, and should investors consider buying the stock right now? Here is what you need to know.

Image source: Getty Images.

What does Quantum Computing Inc. actually do?

Quantum Computing Inc. (QCI) is developing photonic technology that leverages light and its quantum mechanical properties for high-performance computing applications, including quantum computing, machine learning, cybersecurity, and others.

The company states that photonic technology is capable of high bandwidth and fast processing while consuming low amounts of energy, and can operate in room-temperature environments. That could make it more practical and affordable than some traditional quantum computers, which often require low temperatures or lab-controlled environments.

QCI's long-term goal is to become an Nvidia of sorts, selling chips integrated with photonic circuits for various real-world applications.

Image source: Quantum Computing Inc.

Most of today's chips are made from silicon. QCI is building with thin-film lithium niobate (TFLN). The company recently established a foundry to produce the TFLN components for its quantum machines. Eventually, it aims to refine the technology and miniaturize it to the size of an Nvidia GPU.

The business is far more potential than tangible results, at least for now

Now might be a good place to pump the brakes a bit, as Quantum Computing Inc. is an extremely early-stage company.

QCI recently completed construction of its foundry and has received only five orders as of the first quarter of 2025. The company offers hardware products and software services, but QCI's current customer base is primarily limited to government and academic researchers.

As a result, the business has generated about $385,000 in total revenue over the past year. Yes, that's less than half a million dollars. There is no quick ramp-up looming, either. Wall Street analysts expect Quantum Computing Inc. to finish 2025 with $600,000 in revenue and just $2.9 million the following year.

Research by Mordor Intelligence estimates the addressable market for photonic integrated circuits was $15.4 billion in 2024 and projects it will grow to $38.4 billion by 2029. Given QCI's virtually non-existent revenue, it's clear that the company is not yet ready to capitalize on the opportunity.

Meanwhile, QCI has numerous competitors in the space, including Cisco Systems, International Business Machines, and Marvell Technology.

Is the stock a buy now? Putting all of this together

It may take at least a few more years to gain a clear understanding of Quantum Computing Inc.'s position in the Photonic Integrated Circuit industry or the broader quantum computing market. That means investors who buy the stock today are taking a massive leap of faith in the company.

Such limited revenue makes the stock's current $2.6 billion market cap, roughly 90 times next year's revenue estimate, tough to stomach. It leaves investors at risk of severe losses if something happens to the company that sours the market's sentiment.

Quantum Computing Inc. may be trying to replicate Nvidia's business, but its limited revenue suggests it's lagging in the Photonic Integrated Circuit field, rather than leading it. Consider allowing Quantum Computing Inc. to prove itself, establish a larger revenue base, and then reevaluate the stock's investment potential. It's just not there yet.

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Justin Pope has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Cisco Systems, International Business Machines, and Nvidia. The Motley Fool recommends Marvell Technology. The Motley Fool has a disclosure policy.