01 (2012 Selected)：

Heterogeneous Quantum Repeater Hardware

Quantum repeaters are one of the foremost candidates for near-future quantum technologies. They allow entanglement to be distributed across wider areas than existing quantum networks, enabling the use of distributed quantum communication and computation, with the potential to revolutionize many areas both of physics and daily life.

Quantum repeater development has largely concentrated on the experimental design of individual repeater nodes, and also the theoretical development of communication protocols based on idealized nodes and simple networks. Combining realistic experimental hardware parameters with complex networks and non-ideal protocols is a challenging area that is currently underdeveloped. Without such close coordination, theoretical protocols can be developed that have no realistic implementation, and experimental work has few criteria against which to judge success or failure.

This project will focus on complex, realistic hardware models.  We will develop detailed simulations of networks of repeater nodes, simulating both the physical node design and the communication protocols used. We will use the specific design of superconducting qubits coupled to nitrogen-vacancy diamond ensembles, and simulate the rate of generation of usable entangled links within the network for a range of parameters. The results of the simulation will enable us to evaluate the medium-scale performance of these existing small-scale technologies, laying out a specific roadmap for experimental improvement that will lead to network deployment.

Details : 「Publications」