Reconstructing quantum states from local data

• Published in: Physical review letters Vol. 113; no. 26; p. 260501
• Main Authors: Swingle, Brian, Kim, Isaac H
• Format: Journal Article
• Language: English
• Published: United States 31.12.2014

We consider the problem of reconstructing global quantum states from local data. Because the reconstruction problem has many solutions in general, we consider the reconstructed state of maximum global entropy consistent with the local data. We show that unique ground states of local Hamiltonians are...