5 papers
The -Peak: Covariant Recovery on Four Organic Qubit Platforms
Hikaru Wakaura, Taiki Tanimae
We characterize where, in the noise parameter space of the uniform dephasing--depolarizing channel , a deterministic, \emph{nonlin…
Markovian dephasing has no entanglement-breaking threshold, and a fixed tolerance will report one anyway
Hikaru Wakaura, Taiki Tanimae
When modelling decoherence in a biological spin system it is tempting to seek a critical rate beyond which the channel is entanglement-breaking (EB) and quantum resources are gone.…
Quantum Reservoir Autoencoder: Conditions, Protocol, and Noise Resilience
Hikaru Wakaura, Taiki Tanimae
Quantum reservoir computing exploits fixed quantum dynamics and a trainable linear readout to process temporal data, yet reversing the transformation -- reconstructing the input fr…
Catalytic Quantum Error Correction: Theory, Efficient Catalyst Preparation, and Numerical Benchmarks
Hikaru Wakaura, Taiki Tanimae
Quantum computers promise transformative speedups, but environmental noise destroys their fragile states. Conventional quantum error correction (QEC) encodes information redundantl…
Evaluation artifacts in reversible quantum reservoir protocols: a withdrawal of our own claims, and an entangled channel that survives the controls
Hikaru Wakaura, Taiki Tanimae
This replaces v1, which reported a ten-order shot-noise suppression from a quantum reservoir autoencoder and a two-phase protocol reconstructing unseen inputs at MSE ~ 10^-4. We wi…