Qubit portrait of the photon-number tomogram and separability of two-mode light states

TL;DR

This paper explores the use of qubit-portrait methods to analyze photon-number tomograms of two-mode light states, focusing on detecting entanglement and separability in complex quantum states.

Contribution

It introduces a novel approach applying qubit-portraits to photon-number tomograms for entanglement detection in two-mode light states.

Findings

Qubit-portrait method effectively detects entanglement in Gaussian and Schrödinger cat states.

The approach handles probability distributions with infinite outputs.

Demonstrates applicability to complex quantum optical states.

Abstract

In view of the photon-number tomograms of two-mode light states, using the qubit-portrait method for studying the probability distributions with infinite outputs, the separability and entanglement detection of the states are studied. Examples of entangled Gaussian state and Schr\"{o}dinger cat state are discussed.