Efficient linear optical generation of a multipartite W state via a quantum eraser

Yong-Su Kim, Young-Wook Cho, Hyang-Tag Lim, and Sang-Wook Han
Phys. Rev. A 101, 022337 – Published 28 February 2020

Abstract

Entanglement among multiple particles is a keystone for not only fundamental research on quantum information but also various practical quantum information applications. In particular, the W state has attracted a lot of attention due to the robustness against particle loss and the applications in multiparty quantum communication. However, it is challenging to generate a photonic W state with a large number of photons, since the N-photon W state requires superposition among N probability amplitudes. In this paper, we propose an efficient linear optical scheme to generate N-photon W states via quantum erasure. The success probability of our protocol polynomially decreases as the number of photons increases. We also discuss the experimental feasibility of our protocol and anticipate that one can efficiently generate tens of photonic W states with our scheme using currently available quantum photonics technologies.

  • Figure
  • Figure
  • Figure
  • Received 2 December 2019
  • Accepted 7 February 2020

DOI:https://doi.org/10.1103/PhysRevA.101.022337

©2020 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Yong-Su Kim1,2,*, Young-Wook Cho1, Hyang-Tag Lim1, and Sang-Wook Han1,2

  • 1Center for Quantum Information, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
  • 2Division of Nano & Information Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea

  • *yong-su.kim@kist.re.kr

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 2 — February 2020

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×