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Quantum Computing
Goal Useful, fault-tolerant quantum computing
Stage ladder
How stages are derived →- 1Scale & supremacy
- 2Below-threshold QEC
- 3Many logical qubits
- 4Fault-tolerant scaling
- 5Useful FTQC
Companies, by verified stage
IBM IBM
4.0 / 5
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IonQ IONQ
4.0 / 5
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Quantinuum QNT
3.0 / 5
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QuEra PRIVATE
3.0 / 5
$230M
Atom Computing PRIVATE
2.0 / 5
—
Rigetti Computing RGTI
1.0 / 5
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Alice & Bob PRIVATE
Not staged
$250M
D-Wave Quantum QBTS
Not staged
—
Google Quantum AI GOOGL
Not staged
—
Honeywell HON
Not staged
—
Infleqtion PRIVATE
Not staged
—
IQM PRIVATE
Not staged
$600M
Oxford Ionics PRIVATE
Not staged
—
Pasqal PRIVATE
Not staged
$300M
PsiQuantum PRIVATE
Not staged
$2.3B
Quantum Computing Inc QUBT
Not staged
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Xanadu PRIVATE
Not staged
$275M