Quantum resource theories identify features of quantum computers providing computational advantage, and this work investigates the resources driving classical simulation complexity in continuous-variable quantum computing. Researchers uncovered symplectic coherence in continuous-variable circuits, analogous to coherence in discrete-variable systems, establishing it as a necessary resource for universality alongside non-Gaussianity and entanglement.
Continuous-variable quantum computing mirrors discrete-variable systems
Quantum resource theories identify features of quantum computers providing computational advantage, and this work investigates the resources driving classical simulation complexity in continuous-variable quantum computing. Researchers uncovered symplectic coherence in continuous-variable circuits, analogous to coherence in discrete-variable systems, establishing it as a necessary resource for universality alongside non-Gaussianity and entanglement.