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arXiv:2603.20038v1 Announce Type: new Abstract: We study PRODSAT-QSAT($k$): given rank-one $k$-local projectors, determine whether a quantum $k$-SAT instance admits a satisfying product state. We pres…
arXiv:2603.20035v1 Announce Type: new Abstract: In the last decade research of quantum nonlocality has moved beyond the regime of standard Bell nonlocality to consider network-based experimental set-u…
arXiv:2603.20029v1 Announce Type: new Abstract: Accurately estimating expectation values of quantum observables with as few measurements as possible is crucial to many quantum computing applications. …
arXiv:2603.20024v1 Announce Type: new Abstract: We introduce layered Quantum Architecture Search (layered-QAS), a strategy inspired by classical network morphism that designs Parametrised Quantum Circ…
arXiv:2603.19985v1 Announce Type: new Abstract: Arbitrated quantum signature (AQS) schemes aim at ensuring the authenticity of a message with the help of an arbitrator. Moreover, they aim at preventin…
arXiv:2603.19980v1 Announce Type: new Abstract: The Quantum Approximate Optimization Algorithm (QAOA) and its advanced variant, the Quantum Alternating Operator Ansatz (QAOA), are major research topic…
arXiv:2603.19969v1 Announce Type: new Abstract: Trapped-ion Quantum Charge-Coupled Device (QCCD) architectures promise scalability through interconnected trap zones and dynamic ion transport; however,…
arXiv:2603.19927v1 Announce Type: new Abstract: The Bessis-Moussa-Villani (BMV) conjecture, originating in quantum statistical mechanics, was proved by Stahl after an influential reformulation by Lieb…
arXiv:2603.19911v1 Announce Type: new Abstract: Discriminating between noisy quantum processes is a central primitive for quantum communication, metrology, and computing. While discrimination limits f…
arXiv:2603.19906v1 Announce Type: new Abstract: Solid-spin defects in diamond provide long coherence times and room-temperature optical initialization and readout, making them an attractive platform f…
arXiv:2603.19901v1 Announce Type: new Abstract: A fundamental problem in quantum coding theory is to determine the maximum size of quantum codes of given block length and distance. A recent work intro…
arXiv:2603.19870v1 Announce Type: new Abstract: Hybrid bosonic codes combining bosonic codes with photon states offer a promising pathway for fault-tolerant quantum computation. However, the efficient…
arXiv:2603.19866v1 Announce Type: new Abstract: We develop a framework for Matrix Product Quantum Channels (MPQCs), a one-dimensional tensor-network description of completely positive, trace-preservin…
arXiv:2603.19785v1 Announce Type: new Abstract: Constrained by the complexity of theoretical calculations, current research on genuine tripartite nonlocality (GTN) within the relativistic framework co…
arXiv:2603.19631v1 Announce Type: new Abstract: Quantum systems promise to revolutionize information processing science and technology [1-3]. The preservation of quantum coherence, the defining proper…
arXiv:2603.19612v1 Announce Type: new Abstract: Self-testing is a phenomenon where the use of specific quantum states or measurements can be inferred solely from the correlations they generate. We int…
arXiv:2603.19597v1 Announce Type: new Abstract: We introduce a stabilizer formalism for EAQECCs with noise ebits, using special subgroups of product groups of two Pauli groups. This formalism includes…
arXiv:2603.19522v1 Announce Type: new Abstract: Decoding a quantum error correction code is generally NP-hard, but corrections must be applied at a high frequency to suppress noise successfully. Match…
arXiv:2603.19489v1 Announce Type: new Abstract: A double-heralding technique is presented for producing heralded entangled photon pairs from spontaneous parametric down-conversion (SPDC). Compared to …
arXiv:2603.19476v1 Announce Type: new Abstract: The no-broadcasting theorem, a fundamental limitation on the communication of quantum information, holds that a physical process cannot broadcast copies…
arXiv:2603.19388v1 Announce Type: new Abstract: Bounding the correlations predicted by quantum theory is an important challenge in quantum information science. Today's leading approach is semidefinite…
arXiv:2603.19373v1 Announce Type: new Abstract: Spatiotemporally correlated errors are widespread in quantum devices and are particularly adversarial to error correcting schemes. To characterize these…
arXiv:2603.19342v1 Announce Type: new Abstract: Quantum interference provides one of the most sensitive probes of quantum mechanics. While linear superposition fixes the positions and quadratic curvat…
French National Quantum Update: January 2026 The Quantum Insider