Remote Tomography Via von Neumann-Arthurs-Kelly Interaction

TL;DR

This paper introduces a new method for remote quantum state tomography using von Neumann-Arthurs-Kelly interaction and teleportation, enabling state reconstruction through apparatus measurements without direct system access.

Contribution

It presents a novel interaction-based remote tomography technique that differs from traditional entanglement and Bell measurement methods.

Findings

Successful reconstruction of unknown quantum states via apparatus measurements

Demonstrates feasibility of interaction-based remote tomography

Provides a new approach to quantum state transfer and measurement

Abstract

Teleportation usually involves entangled particles 1,2 shared by Alice and Bob, Bell-state measurement on particle 1 and system particle by Alice, classical communication to Bob, and unitary transformation by Bob on particle 2. We propose a novel method: interaction-based remote tomography. Alice arranges an entanglement generating von Neumann-Arthurs-Kelly interaction between the system and two apparatus particles, and then teleports the latter to Bob. Bob reconstructs the unknown initial state of the system not received by him by quadrature measurements on the apparatus particles .