Quantum 2.0 Conference and Exhibition

Distributed Blind Quantum Computing with a Two-Node Quantum Network

Pieter-Jan Stas, Yan-Cheng Wei, Aziza Suleymanzade, Gefen Baranes, Can M. Knaut, Yan Qi Huan, Erik Knall, Kelly Werker-Smith, Francisco Machado, Madison Sutula, Daniel Assumpção, Moritz Merz, Hongkun Park, Marko Lončar, Mikhail D. Lukin

Published Jan 1, 2024• 1 citation

Publisher

Abstract

We show progress towards the experimental demonstration of distributed blind quantum computing using a two node quantum network of Silicon-Vacancy (SiV) centres in diamond nanocavities.

DOI: 10.1364/quantum.2024.qtu4b.5

Related papers

Exploring New Applications Using Solid-State Quantum Network

Maxim A. Sirotin, Pieter-Jan Stas, Yan-Cheng Wei +10 more

We experimentally explore new applications utilizing a two-node quantum network based on silicon-vacancy centers in diamond integrated in nanophotonic cavities, including distributed blind quantum computing and nonlocal quantum interferometry.

Quantum 2.0 Conference and ExhibitionJan 1, 20250 citations

Universal distributed blind quantum computing with solid-state qubits

Yan-Cheng Wei, Pieter-Jan Stas, Aziza Suleymanzade +16 more

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

arXiv:2412.03020ScienceMay 1, 202538 citations

A two-node quantum network with silicon vacancies in diamond nanocavities

Yan-Cheng Wei, Aziza Suleymanzade

A key challenge in realizing practical quantum networks for long-distance quantum communication involves robust entanglement between quantum memory nodes connected via fiber optical infrastructure. I will talk about our recent work on utilizing silicon vacancy (SiV) centers in nanophotonic diamond cavities integrated with a telecommunication (telecom) metropolitan quantum network. Specifically, remote entanglement generation is generated by the cavity-enhanced interactions, and long-lived auxiliary memory qubits are used to provide second-long entanglement storage with integrated error detection. By interfacing with efficient bi-directional frequency conversion to telecommunication frequencies, we demonstrate entanglement of two nuclear spin memories through a 35 km long fiber deployed in the Boston urban area, an enabling step towards practical quantum repeaters and large-scale quantum network. I will also talk about an in-progress work on exploring blind and distributed quantum computation through this two-node quantum network.

Optical and Quantum Sensing and Precision Metrology IIMar 13, 20240 citations

Distributed Applications of a Solid State Qubit Quantum Network

Pieter-Jan Stas

Quantum networks enable applications ranging from quantum secure communication to distributed quantum computing and quantum-enhanced non-local sensing. Silicon-vacancy (SiV) centers in diamond nano-photonic cavities are a strong candidate platform for quantum networking due to their access to multiple qubits, high operation fidelities, and an efficient matter qubit-photon interface. In this thesis, I provide a background overview of both the field of quantum networking in general and the experimental platform of SiVs in diamond nano-photonic cavities. The thesis shows experimental demonstrations of SiVs from the last six years, including the development of the 29SiV as a quantum node with a two-qubit register and the subsequent remote entanglement of two such nodes over a metropolitan fiber. With this two-node network of SiVs, we implement two quantum networking applications. The first application, blind quantum computing, allows a user to remotely run an arbitrary algorithm on a quantum computer by controlling the measurement basis of photons they receive from the quantum computer, while the quantum computer receives no information about the implemented algorithm. We demonstrate a full blind quantum gate set required to implement an arbitrary quantum algorithm with information-theoretic security. The second application is entanglement-assisted remote optical interferometry. This experiment shows how remotely entangled SiVs can assist the phase sensitivity of long-baseline telescope arrays to better observe weak thermal photonic signals. I finally provide some remarks and propose future directions for the SiV as a quantum networking platform

Jan 1, 20260 citations

A long-distance two-node quantum network with silicon vacancies in diamond nanocavities

Yan-Cheng Wei, Can M. Knaut, Aziza Suleymanzade +14 more

A key challenge in realizing long-distance quantum networks involves entanglement between memory nodes via existing fiber infrastructure. Here, we demonstrate a two-node quantum network based on Silicon Vacancy defect centers in diamond nanophotonic cavities integrated with a metropolitan telecommunication fiber network [1].

Quantum 2.0 Conference and ExhibitionJan 1, 20240 citations

An integrated two-qubit quantum network node

Mihir K. Bhaskar, Денис Дмитриевич Сукачев, C. T. Nguyen +7 more

We build a two-qubit quantum network node based on a 13C nuclear spin and a silicon-vacancy center strongly coupled to a diamond nanophotonic cavity and efficiently interfaced with a tapered optical fiber.

Frontiers in OpticsJan 1, 20190 citations