Special CPM Seminar

Concurrent Remote Entanglement with Continuous Variables

Ananda Roy

Yale University

Generation of bi-partite entangled states of spatially separated, mutually non-interacting distant objects is a key primitive for quantum information processing. In particular, concurrent remote entanglement, in which propagating quantum signals do not interact with both systems under consideration, is a desirable feature of the scalable module-based architecture of quantum computing. First, I will present a continuous variable remote entanglement protocol using a non-linear interaction of quantum signals [1]. I will describe a proposal for experimental realization of this protocol in Josephson junction based superconducting circuit-QED systems. Second, I will present a remote entanglement protocol using joint photon number measurements of propagating microwave modes, thereby incorporating quantum error correction to correct for undesired photon losses that plague realistic quantum systems.

[1] Ananda Roy, Liang Jiang, A. Douglas Stone, and Michel Devoret, Phys. Rev. Lett. 115, 150503 (2015)