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arXiv:2604.20001v1 Announce Type: new Abstract: We analyze the quantum dynamics of the fractional-time Jaynes-Cummings model using a recent unitary framework for the fractional-time Schr\"odinger equa…
arXiv:2604.19990v1 Announce Type: new Abstract: Higher-dimensional quantum systems, such as qudits, offer architectural and algorithmic advantages over qubits, but their increased spectral crowding an…
arXiv:2604.19973v1 Announce Type: new Abstract: Stationary states of quantum many-body Hamiltonians are invariant under the Hamiltonian evolution. Besides ground and thermal states, this class include…
arXiv:2604.19944v1 Announce Type: new Abstract: Based on a consistent quantum microscopic approach, we investigate the peculiarities of collective polyatomic effects in atomic ensembles placed in a wa…
arXiv:2604.19911v1 Announce Type: new Abstract: We present a hitherto unexplored semi-device-independent (SDI) self-testing protocol designed to certify unitary operations within a variant of prepare-…
arXiv:2604.19889v1 Announce Type: new Abstract: We develop a recently introduced representation of quantum dynamics based on sampling negative Markov chain processes. By introducing particles and anti…
arXiv:2604.19874v1 Announce Type: new Abstract: In classical dynamical systems, stochastic feedback can stabilize otherwise unstable periodic orbits, giving rise to distinct controlled and uncontrolle…
arXiv:2604.19871v1 Announce Type: new Abstract: Near-term quantum workloads demand error management, yet the two lightest-weight techniques, Quantum Error Detection (QED) and Probabilistic Error Cance…
arXiv:2604.19869v1 Announce Type: new Abstract: Quantum computers are moving into HPC centers, and the main challenge is now integration rather than pure hardware access. Many current software paths s…
arXiv:2604.19862v1 Announce Type: new Abstract: We demonstrate that combining the positivity of density matrices with steady-state conditions yields a systematic bootstrap method for studying open qua…
arXiv:2604.19855v1 Announce Type: new Abstract: Practical quantum advantage is expected to depend on fault-tolerant quantum computing, although the architectural overhead needed to support fault toler…
arXiv:2604.19853v1 Announce Type: new Abstract: In this article, we prove that the quantum $f$-divergence between two normal states on a semifinite von~Neumann algebra is equal to the classical $f$-di…
arXiv:2604.19832v1 Announce Type: new Abstract: In a global derivatives market with notional values in the hundreds of trillions of dollars, the accuracy and efficiency of pricing models are of fundam…
arXiv:2604.19814v1 Announce Type: new Abstract: High-performance computing (HPC) has evolved over decades through multiple architectural transitions, from vector supercomputers to massively parallel C…
Nobel-winning physicist warns bitcoin could be early target of quantum computing CoinDesk
Adam Back says bitcoin should prepare now for quantum risk despite long timeline CoinDesk
IBM and ETH Zurich Join Forces to Shape the Future of Algorithms for the AI and Quantum Era IBM Newsroom
A relative error of less than 0. 1% has been achieved in simulating a complex quantum system, rivaling the accuracy of existing methods. This result, obtained using a deterministic quantum algorithm, …
Can a collective of atoms oscillate indefinitely without external, periodic prompting. Recent work demonstrates a superradiant continuous time crystal phase within an interacting spin-1/2 system, achi…
A precision measurement now boasts sensitivity improved by up to one hundredfold, thanks to a new theoretical framework for generating phonon lasers. This advance moves beyond existing two-ion systems…
Safeguarding cryptocurrency by disclosing quantum vulnerabilities responsibly Research at Google
Until now, two established relationships described wave-particle complementarity, allowing no more than unity when combining visibility and predictability, or requiring a third component to reach the …
Spontaneous emission and absorption now occur under conditions previously thought impossible. Unlike standard models relying on transition dipole coupling, this work fully quantifies dynamics in drive…
Can a set of quantum states be definitively proven incoherent using only its measurable properties. A new framework utilising Bargmann scenarios and polytopes provides a complete geometrical descripti…