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Journal Articles Physical Review Applied Year : 2019

Experimental implementation of a Raman-assisted eight-wave mixing process


Nonlinear processes in the quantum regime are essential for many applications, such as quantum-limited amplification, measurement, and control of quantum systems. In particular, the field of quantum error correction relies heavily on high-order nonlinear interactions between various modes of a quantum system. However, the required order of nonlinearity is often not directly available or weak compared to dissipation present in the system. Here, we experimentally demonstrate a route to obtain higher-order nonlinearity by combining more easily available lower-order nonlinear processes, using a generalization of the Raman transition. In particular, we show a transformation of four photons of a high-Q superconducting resonator into two excitations of a superconducting transmon mode and two pump photons, and vice versa. The resulting eight-wave mixing process is obtained by cascading two fourth-order nonlinear processes through a virtual state. We expect this type of process to become a key component of hardware-efficient quantum error correction using continuous-variable error-correction codes.

Dates and versions

hal-01936696 , version 1 (27-11-2018)



Shantanu O. Mundhada, Alexander Grimm, Jayameenakshi Venkatraman, Zlatko K. Minev, Steven Touzard, et al.. Experimental implementation of a Raman-assisted eight-wave mixing process. Physical Review Applied, 2019, ⟨10.1103/PhysRevApplied.12.054051⟩. ⟨hal-01936696⟩
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