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 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 state with a large number of photons, since the -photon state requires superposition among probability amplitudes. In this paper, we propose an efficient linear optical scheme to generate -photon 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 states with our scheme using currently available quantum photonics technologies.
- Received 2 December 2019
- Accepted 7 February 2020
DOI:https://doi.org/10.1103/PhysRevA.101.022337
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