Universal distributed blind quantum computing with solid-state qubits

TL;DR

This paper demonstrates a universal set of blind quantum gates using solid-state qubits in a distributed network, advancing secure quantum computing with matter qubits in modular architectures.

Contribution

It introduces the first experimental realization of universal blind quantum gates on matter qubits in a distributed setup.

Findings

Successful implementation of single- and two-qubit blind gates

Execution of a distributed blind quantum algorithm

Paves the way for secure, modular quantum computing architectures

Abstract

Blind quantum computing (BQC) is a promising application of distributed quantum systems, where a client can perform computations on a remote server without revealing any details of the applied circuit. While the most promising realizations of quantum computers are based on various matter qubit platforms, implementing BQC on matter qubits remains an outstanding challenge. Using silicon-vacancy (SiV) centers in nanophotonic diamond cavities with an efficient optical interface, we experimentally demonstrate a universal quantum gate set consisting of single- and two-qubit blind gates over a distributed two-node network. Using these ingredients, we perform a distributed algorithm with blind operations across our two-node network, paving the way towards blind quantum computation with matter qubits in distributed, modular architectures.