Multi-qumode transfer reduces n-qubit state conversion time to O(2^{n/m}) and enables qubit QFT approximation in O(m 2^{n/m}/ε + m²) runtime.
Recall from the single-qumode QFT that the free evolution gate only produced the needed action when the qumode state was periodic
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Scalable Qumode-Qubit State Transfer and Fast-forward Quantum Fourier Transform using Oscillators
Multi-qumode transfer reduces n-qubit state conversion time to O(2^{n/m}) and enables qubit QFT approximation in O(m 2^{n/m}/ε + m²) runtime.