Quantinuum and HQS Simulate 21-Spin NMR Spectrum on 42 Qubits With 1,400+ Two-Qubit Gate Circuits
Quantinuum and HQS Quantum Simulations used the H2-1 trapped-ion processor to simulate a 21-spin NMR spectrum for 1,2-di-tert-butyl-diphosphane, requiring 42 qubits and circuits with over 1,400 two-qubit gates. The simulation reproduced a subtle double-peak feature that earlier methods struggled to resolve. The work demonstrates the viability of deep digital Hamiltonian simulation for complex NMR problems.
AI analysis — not reported by the source
What this could mean
- 0–2 yearsPlausible
This could make quantum simulation a practical reference tool for interpreting complex NMR spectra of small-to-medium molecules within two years.
The H2-1 result shows that current trapped-ion hardware can sustain the deep circuits needed to capture fine spectral features. With Quantinuum's expected qubit-count and fidelity improvements on next-generation systems, scaling to denser spin systems becomes an engineering path rather than a fundamental unknown.
This is a brief. The day’s lead story carries the full analysis.