Quantum computing,
decoded.
We make quantum technology understandable - with visual lessons, monitored industry news, and reality-check analysis.
Qubit state
|0⟩ + |1⟩ / √2
Superposition
until measured
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Research
Numerical Evaluation of ZX Calculus Optimization for Solovay Kitaev Quantum Circuit Synthesis
The optimization of quantum circuit synthesis can lead to significant reductions in cost and complexity for quantum computing.
Why this matters →
Research
An Exactness Barrier for ZX-Calculus Optimization of Synthesized Clifford+T Circuits
Quantum computing researchers and enthusiasts may find it crucial to understand the limitations and potential of ZX-calculus in optimizing quantum...
Why this matters →
Research
A Margolus-Levitin speed limit for observables: mean energy bounds expectation-value change quadratically
Understanding quantum speed limits is crucial for assessing the fundamental capabilities and limitations of quantum computing systems.
Why this matters →
Quantum Roadmap Tracker
2025
2026
2027
2028–29
2030+
QU
Quantinuum
Helios: 48 logical qubits, 99.921% two-qubit fidelity
Sol: ~100 logical qubits, five-nines fidelity
Apollo: hundreds of logical qubits, fault-tolerant
IQ
IonQ
Tempo reaches #AQ 64 on 100 qubits
Tempo shipments, 256-qubit demonstration
2M physical, 80,000 logical qubits (2030)
IBM
IBM
Kookaburra: qLDPC memory paired with a logic unit
Cockatoo: entanglement between modules
Starling: 200 logical qubits, 100 million gates (2029)
Blue Jay: ~2,000 logical qubits (2033)
Vendor roadmaps as published. Last verified 25 Aug 2026.
Reality Check
We cut through the hype and analyze what's real, what's coming, and what still needs to improve.
Physical qubits
1,121
IBM Condor, largest superconducting chip
Logical qubits
96
QuEra, verified in Nature (2026)
Error rate
7.9 × 10⁻⁴
Best commercial two-qubit gate (Quantinuum Helios)
To break RSA-2048
< 1M
Physical qubits, estimated (Gidney 2025) — a projection, not a demo
Real-world impact
Early stage
No commercial advantage independently confirmed
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