Experimental quantum entanglement and teleportation by tuning remote spatial indistinguishability of independent photons

Giuseppe Compagno, Alessia Castellini, Rosario Lo Franco, Farzam Nosrati, Chuan-Feng Li, Xiao-Ye Xu, Zheng-Hao Liu, Kai Sun, Farzam Nosrati, Guang-Can Guo, Yan Wang, Jin-Shi Xu

Risultato della ricerca: Articlepeer review

1 Citazioni (Scopus)

Abstract

Quantitative control of spatial indistinguishability of identical subsystems as a direct quantum resource at distant sites has not yet been experimentally proven. We design a setup capable of tuning remote spatial indistinguishability of two independent photons by individually adjusting their spatial distribution in two distant regions, leading to polarization entanglement from uncorrelated photons. This is achieved by spatially localized operations and classical communication on photons that meet only at the detectors. The amount of entanglement depends uniquely on the degree of spatial indistinguishability, quantified by an entropic measure I, which enables teleportation with fidelities above the classical threshold. The results open the way to viable indistinguishability-enhanced quantum information processing.
Lingua originaleEnglish
pagine (da-a)6410-6413
Numero di pagine4
RivistaOptics Letters
Volume45
Stato di pubblicazionePublished - 2020

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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