Odd and even photon-subtracted two-mode squeezed vacuum states

TL;DR

This paper presents a theoretical model for generating photon-subtracted two-mode squeezed vacuum states using a waveguide trimer, revealing how even or odd photon subtraction affects quantum properties and enabling tunable multiphoton states for quantum technologies.

Contribution

It introduces a feasible integrated device model for engineering photon-subtracted states and explores the impact of photon number parity on their quantum characteristics.

Findings

Distinct properties depending on photon subtraction parity

Feasible waveguide trimer design for state engineering

Potential for tunable multiphoton quantum states

Abstract

Photon-subtracted two-mode squeezed vacuum states, a significant quantum resource, exhibit intricate correlations and unique quantum properties. In this work, we propose a theoretical yet experimentally feasible model to engineer these states using a waveguide trimer. Our study uncovers distinct characteristics of the photon-subtracted state depending on whether an even or odd number of photons is extracted, shedding light on the subtle relationship between quantum state manipulation and the parity of the number of subtracted photons. Furthermore, our integrated device facilitates the generation of multiphoton states with tunable correlations, offering significant potential for applications in quantum-enhanced technologies.