Deterministic Generation of Entangled Photons in Superconducting Resonator Arrays

TL;DR

This paper proposes a method to generate entangled photon pairs on demand in superconducting resonator arrays, leveraging nonlinearity and symmetry, with potential applications in quantum information processing.

Contribution

It introduces a deterministic scheme for entangled photon generation in superconducting resonator arrays using spectroscopic techniques and Kerr-like nonlinearity.

Findings

Entangled photons can be generated on demand.

The scheme is robust against fabrication errors.

Potential application in superconducting quantum circuits.

Abstract

We present a scheme for the deterministic generation of entangled photon pairs in a superconducting resonator array. The resonators form a Jaynes-Cummings lattice via the coupling to superconducting qubits, and the Kerr-like nonlinearity arises due to the coupling.We show that entangled photons can be generated on demand by applying spectroscopic techniques and exploiting the nonlinearity and symmetry in the resonators. The scheme is robust against small parameter spreads due to fabrication errors. Our findings can be used as a key element for quantum information processing in superconducting quantum circuits.