Remote preparation and manipulation of squeezed light

TL;DR

This paper demonstrates the experimental remote preparation and manipulation of squeezed light using continuous variable entanglement, with applications in quantum information processing and secure quantum communication.

Contribution

It introduces a method to remotely prepare and control squeezed states via homodyne measurement on entangled modes, advancing quantum network capabilities.

Findings

Remote squeezed state can be created at a distant node.

Manipulation of the state via measurement parameters is possible.

The method is robust against loss and scalable to multiple states.

Abstract

Remote state preparation enables one to create and manipulate a quantum state based on the shared entanglement between distant nodes. Here, we experimentally demonstrate remote preparation and manipulation of squeezed light. By performing homodyne projective measurement on one mode of the continuous variable entangled state at Alice's station, a squeezed state is created at Bob's station. Moreover, rotation and displacement operations are applied on the prepared squeezed state by changing the projective parameters on Alice's state. We also show that the remotely prepared squeezed state is robust against loss and N-1 squeezed states can be remotely prepared based on a N-mode continuous variable Greenberger-Horne-Zeilinger-like state. Our results verify the entanglement-based model used in security analysis of quantum key distribution with continuous variables and have potential application in remote quantum information processing.