Non classical light in Jx photonic lattice

TL;DR

This paper investigates the transfer and evolution of various non-classical light states in a Jx photonic lattice, revealing perfect photon number transfer and state transfer for specific quantum states, with implications for quantum information processing.

Contribution

It demonstrates the perfect transfer of quantum states like Fock and N00N states in a Jx photonic lattice, advancing quantum communication techniques.

Findings

Perfect transfer of mean photon number in all cases.

Quantum state transfer occurs only for Fock and N00N states.

Squeezed and coherent states do not transfer quantum states perfectly.

Abstract

We report the study of non-classical light in a photonic lattice having parabolic coupling distribution, also known as Jx photonic lattice. We focus on two photon Fock state, two photon N00N state, and single mode squeezed state along with coherent state as input to the lattice. We investigate the possibility of perfect transfer of mean photon number as well as quantum state from one waveguide mode to other. We study photon-photon correlation for two photon N00N state. For single mode squeezed state we study in detail, the evolution of squeezing factor and entanglement between the waveguide modes. Our findings suggest perfect transfer of average photon number for all cases and perfect transfer of quantum state in case of two photon Fock state and two photon N00N state only and not in the case of squeezed and coherent state. Our results should have applications in physical implementation of photonic continuous variable quantum information processing.