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Different platforms make different tradeoffs. Some favor speed. Some favor fidelity. Some scale. Understanding the hardware is understanding the boundaries of what quantum computers can actually do.
The Perfectionist
Individual atoms suspended in electromagnetic traps. All-to-all connectivity, identical qubits, and coherence times measured in minutes. Slower gates, but extraordinary fidelity.
Gate time
1–100 μs
Coherence
1–10 min
Temp
~1 mK
Fidelity
99.99%
The Scaler
Arrays of neutral atoms trapped by laser tweezers. Hundreds of qubits demonstrated, with all-to-all connectivity and natural erasure error detection. A rising platform.
Gate time
~1 μs
Coherence
~1–10 s
Temp
~1 μK
Scale
100s
The Room-Temperature Rebel
Uses photons as qubits — no cryogenics required. Operates at room temperature with fiber-optic networking built in. Challenges include probabilistic gates and photon loss.
Gate time
fs–ps
Coherence
km of fiber
Temp
Room
Network
Native
Each platform sits at a different point in the speed-fidelity-scalability tradeoff space.
| Platform | Gate Speed | Coherence | Connectivity | Cooling | Leaders |
|---|---|---|---|---|---|
| Superconducting | ~10–100 ns | ~100 μs | Nearest-neighbor | 15 mK | IBM, Google |
| Trapped Ion | ~1–100 μs | ~1–10 min | All-to-all | ~1 mK | IonQ, Quantinuum |
| Neutral Atom | ~1 μs | ~1–10 s | All-to-all | ~1 μK | QuEra, Pasqal, Atom |
| Photonic | ~fs–ps | Fiber-length | Network-native | Room temp | PsiQuantum, Xanadu |
A visual introduction to the different types of quantum computers and how they work.
A visual tour of the major quantum computing platforms — superconducting, trapped ion, neutral atom, and photonic — and the tradeoffs each one makes.
The superconducting qubit is the most mature and well-documented platform. Understanding it gives you the foundation to appreciate why every other platform exists — and what problems they are trying to solve differently.
Explore Superconducting