Section: New Results

Generating higher order quantum dissipation from lower order parametric processes

Participant: M. Mirrahimi (and S. Mundhada, visitor from Yale in 2016)

The results of this section were published in [16].

Stabilization of quantum manifolds is at the heart of error-protected quantum information storage and manipulation. Nonlinear driven-dissipative processes achieve such stabilization in a hardware efficient manner. Josephson circuits with parametric pump drives implement these nonlinear interactions. In this work, we propose a scheme to engineer a four-photon drive and dissipation on a harmonic oscillator by cascading experimentally demonstrated two-photon processes. This would stabilize a four-dimensional degenerate manifold in a superconducting resonator. We analyze the performance of the scheme using numerical simulations of a realizable system with experimentally achievable parameters. This theoretical work, initiated by Shantanu Mundhada during his visit to Inria in 2016, is currently investigated experimentally at Yale.