Physics & Astronomy Quantum Nano Seminar - Anja Metelmann, Princeton University

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Physics & Astronomy Quantum Nano Seminar - Anja Metelmann, Princeton University

Title: "Nonreciprocal Signal Routing in an Active Quantum Network"

Thursday, January 18, 2018
Wilder 202
Intended Audience(s): Public
Categories: Lectures & Seminars

Abstract: As superconductor quantum technologies are moving towards large-scale
integrated circuits, a robust and flexible approach to routing photons
at the quantum level becomes a critical problem. Active circuits, which
contain parametrically driven elements selectively embedded in the
circuit offer a viable solution. In this talk, we discuss a general
strategy for routing nonreciprocally quantum signals between two sites
of a given lattice of oscillators, implementable with existing
superconducting circuit components. Our approach makes use of a dual
lattice of overdamped oscillators linking the nodes of the main lattice.
Solutions for spatially selective driving of the lattice elements can be
found, which optimally balance coherent and dissipative hopping of
microwave photons to nonreciprocally route signals between two given
nodes. In certain lattices these optimal solutions are obtained at the
exceptional point of the dynamical matrix of the network. We also
demonstrate that signal and noise transmission characteristics can be
separately optimized.

For more information, contact:
Tressena Manning

Events are free and open to the public unless otherwise noted.