scholarly journals Quantum Single-Photon Control, Storage, and Entanglement Generation with Planar Atomic Arrays

PRX Quantum ◽  
2021 ◽  
Vol 2 (4) ◽  
Author(s):  
K. E. Ballantine ◽  
J. Ruostekoski
Keyword(s):  
Single Photon ◽  
Entanglement Generation

scholarly journals Multipartite entanglement of billions of motional atoms heralded by single photon

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Hang Li ◽  
Jian-Peng Dou ◽  
Xiao-Ling Pang ◽  
Chao-Ni Zhang ◽  
Zeng-Quan Yan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Single Photon ◽  
Quantum Memory ◽  
Photon Statistics ◽  
Multipartite Entanglement ◽  
Strongly Correlated ◽  
Ambient Conditions ◽  
Entanglement Generation ◽  
Physical Systems ◽  
Isolated Systems

AbstractQuantum theory does not prevent entanglement from being created and observed in macroscopic physical systems, in reality however, the accessible scale of entanglement is still very limited due to decoherence effects. Recently, entanglement has been observed among atoms from thousands to millions levels in extremely low-temperature and well isolated systems. Here, we create multipartite entanglement of billions of motional atoms in a quantum memory at room temperature and certify the genuine entanglement via M-separability witness associated with photon statistics. The information contained in a single photon is found strongly correlated with the excitation shared by the motional atoms, which intrinsically address the large system and therefore stimulate the multipartite entanglement. Remarkably, our heralded and quantum memory built-in entanglement generation allows us to directly observe the dynamic evolution of entanglement depth and further to reveal the effects of decoherence. Our results verify the existence of genuine multipartite entanglement among billions of motional atoms at ambient conditions, significantly extending the boundary of the accessible scale of entanglement.

Sign in / Sign up

Export Citation Format

Share Document