We're still years away from practical full-scale quantum computing systems. That makes many quantum computing stocks risky.

Rigetti Computing is pursuing a more universal gate-based quantum system that theoretically should be able to solve more complex computational problems. The company uses a modular chip architecture ...

A qubit is sort of like a spinning coin before it lands, but this state makes it more sensitive to outside forces, such as ...

Quantum computing promises extraordinary power, but that same power may expose new security weaknesses. Quantum computers are expected to deliver dramatic gains in processing speed and capability, ...

IonQ holds the world record for two-qubit gate fidelity at 99.99%. No other company has crossed the 99.9% two-qubit gate ...

Alphabet made a breakthrough in late 2024 with its Willow chip, which was able to exponentially reduce errors as it added ...

Quantum computers could rapidly solve complex problems that would take the most powerful classical supercomputers decades to ...

Quantum software startup Haiqu Inc. announced today that it has raised $11 million in new funding to accelerate the launch of ...

Rigetti sells on-premises 9-108 qubit quantum computing systems, supporting national laboratories and quantum computing centers. Rigetti's 9-qubit Novera QPU supports a broader R&D community with a ...

Quantum computers, systems that process information leveraging quantum mechanical effects, could soon outperform classical computers on some complex computational problems. These computers rely on ...

For decades, quantum computing has been heralded as a technology of the future, promising to solve problems far beyond the reach of supercomputers. But its practical use has remained elusive. That’s ...

Sitting in an office at QuEra Computing’s Boston headquarters, Yuval Boger was talking about the recent advancements made in quantum computing that are driving the chorus around an accelerated the ...