Building up spacetime with quantum entanglement

Japanese version
The following essay is very comprehensive to understand how to emerge timespace from entanglement entropy. The original is on arxiv:1005.3035 titled "Building up spacetime with quantum entanglement." I had translated it into Japanese.

Building up spacetime with quantum entanglement (in English)

Building up spacetime with quantum entanglement (in Japanese)

In particular, Entanglement entropy is closely related with quantum gravity theory, the theory of black holes and entropic gravity theory, talked by E. Verlinde and A Strominger, I think.