IQIM Postdoctoral and Graduate Student Seminar
Abstract: A future quantum internet can unlock fundamentally new technologies by sharing entangled states and quantum information across the nodes of the network. In the past decade, many buildings blocks of such a network have been demonstrated. In particular, the heralded distribution of entanglement between two physically separated nodes and quantum teleportation has been achieved on various platforms, however connecting multiple nodes into a multi-node quantum network remained an open challenge.
In this talk I will present our results on the experimental realization of a multi-node quantum network. Our network consists of three nodes, Alice, Bob and Charlie. Each node contains a nitrogen-vacancy center that acts as a communication qubit to generate remote entanglement with neighboring nodes. Additionally, Bob and Charlie have access to a memory qubit in the form of a carbon-13 nuclear spin. On the network we demonstrate the distribution of a genuine multi-partite entangled state, entanglement swapping[1] and qubit teleportation between non-neighboring nodes[2]. Our work establishes a key platform for exploring, testing and developing multi-node quantum network protocols and a quantum network control stack.
[1] M. Pompili*, S. L. N. Hermans*, S. Baier*, H. K. C. Beukers, P. C. Humphreys, R. N. Schouten, R. F. L. Vermeulen, M. J. Tiggelman, L. dos Santos Martins, B. Dirkse, S. Wehner, and R. Hanson, "Realization of a multinode quantum network of remote solid-state qubits," Science, vol. 372, no. 6539, pp. 259–264, 2021.
[2] S. L. N. Hermans*, M. Pompili*, H. K. C. Beukers, S. Baier, J. Borregaard, and R. Hanson, "Qubit teleportation between non-neighboring nodes in a quantum network," Nature, vol. 605, 663–668, 2022,
*These authors contributed equally to this work
Lunch will be provided, following the talk, on the lawn north of the Bridge Arcade
Attendees joining in person must demonstrate that they comply with Caltech's vaccination requirements (present Caltech ID or AWS ID or vaccination and booster confirmation).