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arXiv · 2310.00124

Bidirectional multi-photon communication between remote superconducting nodes

Joel Grebel·Haoxiong Yan·Ming-Han Chou·Gustav Andersson·Christopher R. Conner·Yash J. Joshi·Jacob M. Miller·Rhys G. Povey·Hong Qiao·Xuntao Wu·Andrew N. Cleland
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Abstract

Quantum communication testbeds provide a useful resource for experimentally investigating a variety of communication protocols. Here we demonstrate a superconducting circuit testbed with bidirectional multi-photon state transfer capability using time-domain shaped wavepackets. The system we use to achieve this comprises two remote nodes, each including a tunable superconducting transmon qubit and a tunable microwave-frequency resonator, linked by a 2 m-long superconducting coplanar waveguide, which serves as a transmission line. We transfer both individual and superposition Fock states between the two remote nodes, and additionally show that this bidirectional state transfer can be done simultaneously, as well as used to entangle elements in the two nodes.

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Joel Grebel, Haoxiong Yan, Ming-Han Chou, Gustav Andersson, Christopher R. Conner, Yash J. Joshi, Jacob M. Miller, Rhys G. Povey, Hong Qiao, Xuntao Wu, Andrew N. Cleland. 2023-09-29. Bidirectional multi-photon communication between remote superconducting nodes. https://doi.org/10.1103/physrevlett.132.047001

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