Axline, Christopher

Date:  Thursday, February 1, 2018
Time:  11:00
Place:  ETH Zurich, Hönggerberg, HPF G 6
Host:  Jonathan Home

A deterministic, elementary quantum network in circuit QED

Christopher Axline
Dept. of Applied Physics, Yale University, New Haven, USA

Modular quantum computing architectures—with the potential for groundbreaking applications such as distributed, fault-tolerant quantum computing—demand fast and efficient distribution of quantum information. In this talk, I present our experimental realization of rapid, on-demand quantum state transfer between two remote superconducting cavity quantum memories via microwave photons propagating across a transmission line. This quantum communication channel is established using a scheme for faithful parametric conversion between memory and propagating modes at each modular network node. By partial transfer of a photon, we generate remote entanglement at a rate that exceeds photon loss in either memory. With the goal of implementing deterministic error correction, I will show successful transfer of information in a cavity encoding that can be robust against photon loss. These results demonstrate the first steps in a powerful scaling approach towards modular quantum networks.