Decoherence-free measurements in steering tasks

TL;DR

This paper proposes a method to perform quantum steering measurements without the need for a classical coincidence channel, leveraging bright biphoton sources to enhance quantum control techniques.

Contribution

It introduces a novel approach to quantum steering that eliminates the classical coincidence channel, advancing experimental capabilities in quantum entanglement control.

Findings

Feasibility of decoherence-free steering measurements with current biphoton sources

Elimination of classical coincidence channels in quantum experiments

Potential for improved quantum control and entanglement manipulation

Abstract

Quantum entanglement has been used as an experimental tool to control the state of a quantum subsystem by measurements in its twin subsystem by Kwiat and Chiao 21 year ago, already, with entangled subsystems linked by an auxiliary classical coincidence channel. We propose to extend the idea one significant step further consisting essentially in eliminating the coincidence channel in the reminded experiment. The current availability of bright biphoton sources makes such experiments feasible.