Extraction of Singlet States from Noninteracting High-Dimensional Spins

TL;DR

This paper introduces a protocol for extracting singlet states from two remote high-dimensional spins using post-selection, requiring few iterations and feasible experimental setups.

Contribution

It presents a novel scheme for singlet state extraction applicable to arbitrary spin numbers with minimal iterations and practical implementation methods.

Findings

Effective singlet state extraction with few iterations

Protocol applicable to arbitrary high-dimensional spins

Proposed experimental setups for implementation

Abstract

We present a scheme for the extraction of singlet states of two remote particles of arbitrary quantum spin number. The goal is achieved through post-selection of the state of interaction mediators sent in succession. A small number of iterations is sufficient to make the scheme effective. We propose two suitable experimental setups where the protocol can be implemented.