4 papers
Local decoders for fault-tolerant quantum computation and translation-invariant stabilizer codes
Nathaniel Selub, Aditya Bhardwaj, Ethan Lake
We construct the first fully spatially local fault-tolerant quantum computer based on topological codes in fewer than four spatial dimensions. Our construction is a two-dimensional…
Dipole-independent measurements of nearly-zero CMB correlation: a possible symmetry of primordial causal quantum coherence
Craig Hogan, Ohkyung Kwon, Stephan S. Meyer +2
Anisotropy of space-time is measured on the scale of the cosmic horizon, using the angular correlation function of cosmic microwave background (CMB) temperature at large ang…
Angular spectrum of quantum fluctuations in causal structure
Craig Hogan, Ohkyung Kwon, Nathaniel Selub
Scaling arguments are used to constrain the angular spectrum of distortions on boundaries of macroscopic causal diamonds, produced by Planck-scale vacuum fluctuations of causally-c…
Angular correlations on causally-coherent inflationary horizons
Craig Hogan, Stephan S. Meyer, Nathaniel Selub +1
We develop a model for correlations of cosmic microwave background anisotropy on the largest angular scales, based on standard causal geometrical relationships in slow-roll inflati…