Today #quantum arXiv selection: Quantum chemistry, quantum LDPC code, quantum polynomial computation, quantum key distribution, quantum chaos, encoding of data, and quantum optimization. More details and links below: - ThreadSky

schrodcatpost.bsky.social • 4 days ago

Today #quantum arXiv selection: Quantum chemistry, quantum LDPC code, quantum polynomial computation, quantum key distribution, quantum chaos, encoding of data, and quantum optimization.
More details and links below:

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schrodcatpost.bsky.social•4 days ago

Spectrum amplification enhances ground-state energy estimation in fault-tolerant quantum computing by improving block-encoding efficiency for sum-of-squares Hamiltonians, enabling significant speedups when combined with optimized Coulomb integral factorizations.
https://arxiv.org/abs/2502.15882

schrodcatpost.bsky.social•4 days ago

Decision Tree Decoders (DTDs) efficiently decode quantum LDPC codes by incrementally constructing corrections through decision tree exploration, with one algorithm guaranteeing minimum-weight corrections and another providing fast, high-accuracy heuristic decoding.
https://arxiv.org/abs/2502.16408

schrodcatpost.bsky.social•4 days ago

The EHands protocol enables efficient polynomial transformations on quantum processors by systematically composing four basic arithmetic subcircuits using expectation-value encoding, reducing classical post-processing.
https://arxiv.org/abs/2502.15928

schrodcatpost.bsky.social•4 days ago

Using natural mode filtering and phase noise mitigation, record-distance CV-QKD over 120 km is demonstrated, proving its feasibility for scalable, cost-effective quantum-secured communication in existing optical networks.
https://arxiv.org/abs/2502.17388

schrodcatpost.bsky.social•4 days ago

A scalable quantum circuit combined with an interferometric protocol enables efficient OTOC measurement, demonstrating commutator growth in a 9-qubit Ising chain with high accuracy, paving the way for studying quantum chaos and information scrambling.
https://arxiv.org/abs/2502.17286

schrodcatpost.bsky.social•4 days ago

Matrix product states (MPS) enable efficient amplitude encoding of quantum states with limited entanglement entropy, achieving high-accuracy function and image representations using O(n)-depth circuits without ancillas.
https://arxiv.org/abs/2502.16464

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