Squeezed light generation by Cooper pair recombination in a superconductor-semiconductor structure
Phys. Rev. B 114, 134506 – Published 9 September, 2026
DOI: https://doi.org/10.1103/d1l4-5dyl
Abstract
We theoretically demonstrate squeezed light generation in a compact, electrically driven device utilizing the nonlinear light-matter interaction of Cooper pair recombination in a hybrid superconductor-semiconductor structure. On the basis of second-order perturbation theory, we developed an effective Hamiltonian which incorporates the electronic component of the interaction as a photon coupling strength coefficient, enabling a model to describe the quadrature squeezing effect of Cooper pair recombination on the photonic state. We find the squeezing strength to be proportional to the superconducting energy gap squared and device length, as well as increasing with applied voltage. For a practical device length, materials, and voltage bias, we calculated squeezing values comparable to those of existing squeezed light generation methods when operating below the critical temperature. This theoretically developed concept shows viability for electrically pumped squeezed light generation and can pave the way towards the realization of squeezing in compact integrated structures.
