We present an end-to-end architecture for fault-tolerant continuous variable (CV) quantum computation using only passive on-chip components that can produce photonic qubits above the fault tolerance threshold with probabilities above 90% and encodes logical qubits using physical qubits sampled from a distribution around the fault tolerance threshold. 

In this work, the avalanche triggering probability of ∼1 μm thick Al0.79InAsSb multiplier grown on InP is measured. Avalanche probability values as large as 85% were attained at room temperature for an over-bias of 8%, confirming the capacity of antimonide-based multipliers to achieve high photon detection efficiencies.

A two-mode squeezed microresonator-based frequency comb is demonstrated with CMOS-compatible silicon nitride integrated photonic circuits.