New symmetric five-pulse and longer composite sequences are constructed that compensate amplitude, detuning, and duration errors for X and Hadamard gates via derivative cancellation in the Cayley-Klein parametrization and numerical infidelity minimization.
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Conditioning on rare boundary measurement outcomes in a quantum East circuit generates states with finite two-point correlations at arbitrary distances and an underlying Sierpiński-triangle fractal structure.
HP-1 circuits achieve O(n) depth while preserving shift invariance and exponentially growing Fisher information, enabling numerical replacement of the QFT in Shor's algorithm with neural net classical post-processing.
Feedback-directed circuits on IBM quantum processors produce robust asymmetry in random dynamics distinct from the non-Hermitian skin effect.
citing papers explorer
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Composite quantum gates simultaneously compensated for multiple errors
New symmetric five-pulse and longer composite sequences are constructed that compensate amplitude, detuning, and duration errors for X and Hadamard gates via derivative cancellation in the Cayley-Klein parametrization and numerical infidelity minimization.
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Exact large deviations and emergent long-range correlations in sequential quantum East circuits
Conditioning on rare boundary measurement outcomes in a quantum East circuit generates states with finite two-point correlations at arbitrary distances and an underlying Sierpiński-triangle fractal structure.
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$\mathcal{O}(n)$ alternative to Quantum Fourier Transform with efficient neural net classical post-processing
HP-1 circuits achieve O(n) depth while preserving shift invariance and exponentially growing Fisher information, enabling numerical replacement of the QFT in Shor's algorithm with neural net classical post-processing.
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Observation of feedback-directed quantum dynamics in large-scale quantum processors
Feedback-directed circuits on IBM quantum processors produce robust asymmetry in random dynamics distinct from the non-Hermitian skin effect.