Realisation of a Protected Cat-Qutrit Manifold via Engineered Quantum Tunnelling
Researchers used a three-photon Kerr parametric oscillator to engineer quantum tunnelling in phase space, successfully creating a protected bosonic qutrit manifold. This protection is achieved by engineering an energy gap that suppresses leakage into non-computational states. The system exhibits key signatures like Rabi oscillations and breathing dynamics, suggesting it's a viable platform for fault-tolerant quantum computing.