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This research demonstrates an experimental breakthrough in generating Gaussian continuous-variable entangled states using nonlocal interference effects within parametrically driven systems. By enabling remote stabilization of qubits without synchronized pulses, this approach addresses a critical bottleneck for scaling long-distance quantum networks and hybrid computing platforms. The method leverages broadband photonic correlations to achieve high-throughput multiplexing, marking significant progress toward practical quantum internet infrastructure.
Quantum Machines’ Parametric Systems Generate High-Throughput Entanglement
Entanglement is vital for quantum networks, and can be efficiently generated using systems driven by parametric processes.
An advance in entanglement distribution has been experimentally demonstrated by efficiently generating Gaussian continuous-variable entangled states in parametrically driven systems, even over long distances. While most quantum applications require discrete-variable systems, researchers have overcome this mismatch by coupling qubits to a broadband reservoir of correlated photonic states, driving them into a pure and almost maximally entangled Bell state. This entangled state is stabilized remotely in a fully autonomous manner, without the need for synchronized pulses or other forms of active control. This fully autonomous entanglement stabilization, demonstrated for the first time experimentally after a proposal from Kraus and Cirac more than twenty years ago, offers a key…
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