Quantum optical reconstruction scheme using weak values

TL;DR

This paper introduces a quantum optical state reconstruction method using weak values and postselection, employing an interferometer with homodyne detection to efficiently recover continuous-variable quantum states.

Contribution

It presents a novel quantum state reconstruction scheme leveraging weak values and postselection in an optical interferometer setup, simplifying the measurement process.

Findings

Effective reconstruction of quantum states demonstrated

Utilizes simple homodyne detection with postselection

Enhances quantum state measurement efficiency

Abstract

A quantum state contains the maximal amount of information available for a given quantum system. In this paper we use weak-value expressions to reconstruct quantum states of continuous-variable systems in the quantum optical domain. The role played by postselecting measured data will be particularly emphasized in the proposed setup, which is based on an interferometer just using simple homodyne detection.