The quantum runners and riders

[JayJ]

IBM is one of the most advanced players, focusing on superconducting qubits and steadily scaling its systems while offering public access through its cloud platform.

Google is pursuing superconducting qubits as well and has demonstrated early "quantum supremacy," though practical applications are still limited.

Microsoft is taking a different approach by working on topological qubits, which are harder to build but could be more stable if successful.

Amazon is not building its own hardware directly but provides access to multiple quantum systems through its Braket cloud platform.

Intel is developing silicon-based qubits with the goal of leveraging existing semiconductor manufacturing techniques.

IonQ uses trapped ion technology, which offers high accuracy but can be slower to scale.

Rigetti Computing focuses on superconducting qubits and aims to integrate quantum processors with classical computing systems.

D-Wave Systems specializes in quantum annealing, which is useful for optimization problems but not a universal quantum computing approach.

PsiQuantum is working on photonic quantum computing and aims to build a fault-tolerant system using light-based qubits.

Quantinuum combines hardware and software capabilities and is considered strong in error correction and system integration.

Xanadu is another photonic quantum company, focused on building scalable systems and quantum machine learning tools.

Atom Computing uses neutral atoms as qubits and is pushing toward very large qubit counts.

Pasqal also uses neutral atom technology and is targeting scalable quantum simulation and computation.

QuEra Computing develops neutral atom quantum computers with a focus on research and early commercial applications.

NVIDIA is not building quantum hardware but is heavily involved in simulation and hybrid quantum classical computing frameworks.

AMD is exploring how quantum computing can integrate with high performance computing systems.

TSMC supports the ecosystem through advanced chip manufacturing that may be used in quantum hardware components.

Alibaba is investing in quantum research and infrastructure, mainly within China.

Baidu is developing its own quantum platform and software ecosystem.

Fujitsu is focusing on quantum-inspired computing and some hardware research.

NEC is working on quantum communication and computing technologies.

Toshiba is primarily focused on quantum cryptography and secure communication systems.

Zapata AI builds software and algorithms that run on different quantum hardware platforms.

QC Ware develops quantum algorithms and tools for enterprise applications.

Classiq focuses on high-level quantum software development and circuit design automation.

Riverlane specializes in quantum error correction, which is one of the key challenges to making quantum computers practical.

[Northernah]

But which of these are actually likely to matter in the next five years? Or get commercial relevance ?

[FrostBear]

Sure they can't all make it.

[codeberg]

What about PQC companies?

[Quanta]

Basically my experience exactly. Give it a go and report back.

[Pixel Mark]

That is the approach I always take now. I have done similar and the prep mattered more than the expensive bits.

Happy to answer questions if you get stuck.

The timeline estimates keep getting revised and nobody seems to want to admit why.

[BackRowBob]

I am not sure that is always the case. Good stuff.

[Quanta]

That is the conclusion most people land on eventually. The fastest fix is often just checking what is running in the background and killing half of it.

Give it a go and report back.

The post-quantum migration timeline is the part I keep coming back to.

[CosmicRay40]

IBM is one of the most advanced players, focusing on superconducting qubits and steadily scaling its systems while offering public access th

I would only bother if the saving is real and not just headline nonsense. Cheers for sharing that.

Harvest now decrypt later is the threat people are not taking seriously enough.

[Andy89]

That is the honest assessment and people do not want to hear it. Cannot wait for the game to settle it.

The post-quantum migration timeline is the part I keep coming back to.

[DarkEnergy27]

That checks out. The best deals are usually the ones that do not get advertised loudly.

Cheers for sharing that.