Experimental demonstration of the advantage of adaptive quantum circuits
M.
Foss-Feig
, Arkin
Tikku
, Tsung-Cheng
Lu
, K.
Mayer
, Mohsin
Iqbal
, T.
Gatterman
, J.
Gerber
, K.
Gilmore
, D.
Gresh
, A.
Hankin
, Nathan H.
Hewitt
, Chandler V.
Horst
, M.
Matheny
, Tanner
Mengle
, B.
Neyenhuis
, Henrik
Dreyer
, D.
Hayes
, T.
Hsieh
, and Isaac H.
Kim
Entanglement renormalization can be viewed as an encoding circuit for a family of approximate quantum error correcting codes. The logical information becomes progres-sively more well-protected against erasure errors at larger length scales. In particular, an approximate variant of holographic quantum error correcting code emerges at low energy for critical systems. This implies that two operators that are largely separated in scales behave as if they are spatially separated operators, in the sense that they obey a Lieb-Robinson type locality bound under a time evolution generated by a local Hamiltonian.
Markovian Matrix Product Density Operators : Efficient computation of global entropy