Black Hole OLE series | Series page | Previous The Operator Loschmidt Echo (OLE) was one of the observable-estimation examples discussed by Minh Tran in Quantum Algorithms III at the Qiskit Global…
Black Hole OLE, part 7: a local toy model with theory and user guide
Black Hole OLE series | Series page | Previous | Next The 80-qubit experiment is the main result of this series, but it is not the easiest place to learn what an…
Black Hole OLE, part 5: Hawking, black holes, and scrambling
A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
Black Hole OLE, part 6: what the result proves and what comes next
A reproducible Q80 Operator Loschmidt Echo study, from circuit construction and hardware execution to tensor-network limits and information scrambling.
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 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.
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.
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.