A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
Nieuws
Black Hole OLE, part 4: the tensor-network challenge
A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
Black Hole OLE, part 3: Fire Opal on IBM Kingston
A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
Black Hole OLE, part 2: how an Operator Loschmidt Echo works
A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
Black Hole OLE, part 1: what we actually ran
A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
Fermi-Hubbard 2D cuprate series, part 6: 6×6 tensor baseline, IBM diagnostics, and Fire Opal Fez
The 6×6 step reaches 72 qubits, but the current hardware result is still diagnostic: Fire Opal Fez improves strongly over IBM, while sector survival remains low.
Fermi-Hubbard 2D cuprate series, part 5: 4×4 hardware and tensor baselines
The 4×4 run is where exact ED stops being the comfortable reference route and tensor baselines become necessary.
Fermi-Hubbard 2D cuprate series, part 4: time evolution and hardware diagnostics
The 3×3 hardware comparison shows the main diagnostic pattern: Fire Opal is cleaner than direct IBM, but sector survival still falls with time.
Fermi-Hubbard 2D cuprate series, part 3: our 3×3 implementation
The 3×3 run is not meant to be large-scale cuprate physics. It is the exact validation lab that makes the later hardware results interpretable.
Fermi-Hubbard 2D cuprate series, part 2: 2D Hubbard, cuprates, and Google/Willow context
The 2D route is motivated by the one-band Hubbard model as a minimal description of strongly correlated electrons in cuprate-like planes.