DISTRIBUTED QUANTUM COMPUTING SYSTEM

A method for executing a query, the method comprising: obtaining, by a central node, a data request, wherein a first operational node stores a first dataset and the data request indicates that the first operational node needs a second dataset to finish an operation that involves generating a joined dataset based on the first dataset and the second data; and based on the data request, sending, by the central node, a data load request to a second operational node, wherein: the second operational node stores the second dataset, a first entangled qubit set at the first operational node includes qubits that are entangled with qubits in a second entangled qubit set at the second operational node, and the data load request instructs the second operational node to use the second entangled qubit set to transfer a quantum state based on the second dataset to the first entangled qubit set.