Chronological feed of everything captured from Paul Coote.
This withdrawn paper critically examines the "gauge concept" in electromagnetism, deeming it fallacious. The authors posit that "groupthink" perpetuated this concept within physics literature. The paper suggests that the simplicity of refuting the concept implies a historical neglect of scientific rigor in this specific domain, with further details available in a more comprehensive work.
This paper re-examines Konopinski's seminal work on the meaning of the electromagnetic vector potential, highlighting its under-recognized significance. The authors demonstrate that many of Konopinski's key findings can be derived through a simpler approach and uncover overlooked implications within his original analysis. The revised version includes an expanded discussion of underlying assumptions.
GraphDD implements a graph-based algebraic approach to embed optimal dynamical decoupling (DD) sequences into arbitrary quantum circuits. By scaling linearly with the number of idle periods, it enables real-time, circuit-specific error suppression of dephasing and crosstalk without calibration overhead. Experimental verification on 127-qubit IBM hardware demonstrates significant fidelity gains over standard Qiskit embedding methods.
A novel method for quantum circuit execution replaces iterative gate calibration with rapid characterization of gate parameters, which are then corrected during compilation. This approach treats coherent contributions to pulse unitary as part of the gate definition, compensating them with single-qubit rotations. This enables the creation of high-fidelity, two-qubit entangling gates, expanding the available gate set and improving performance significantly.