255 citations · 1.9k across the 36 of their papers we have counts for
3 papers · 2 filters
Quantum memories at finite temperature
Benjamin J. Brown, Daniel Loss, Jiannis K. Pachos +2
To use quantum systems for technological applications we first need to preserve their coherence for macroscopic timescales, even at finite temperature. Quantum error correction has…
Ground state entanglement constrains low-energy excitations
Isaac H. Kim, Benjamin J. Brown
For a general quantum many-body system, we show that its ground-state entanglement imposes a fundamental constraint on the low-energy excitations. For two-dimensional systems, our…
Trapped-ion quantum error-correcting protocols using only global operations
Joseph F. Goodwin, Benjamin J. Brown, Graham Stutter +3
Quantum error-correcting codes are many-body entangled states that are prepared and measured using complex sequences of entangling operations. Each element of such an entangling se…