Anurag Anshu, Srinivasan Arunachalam, et al.
Nature Physics
The NLTS (No Low-Energy Trivial State) conjecture of Freedman and Hastings posits that there exist families of Hamiltonians with all low energy states of non-trivial complexity (with complexity measured by the quantum circuit depth preparing the state). We prove this conjecture by showing that a particular family of constant-rate and linear-distance qLDPC codes correspond to NLTS local Hamiltonians, although we believe this to be true for all current constructions of good qLDPC codes.
Anurag Anshu, Srinivasan Arunachalam, et al.
Nature Physics
Anurag Anshu, Srinivasan Arunachalam, et al.
FOCS 2020
Anand Natarajan, Chinmay Nirkhe
QIP 2024
Srinivasan Arunachalam, Sergey Bravyi, et al.
TQC 2022