Collective Rabi-driven vibrational activation in molecular polaritons

Kavli Affiliate: Carlos Bustamante | Summary:Hybrid light-matter states, known as molecular polaritons, arise from electronic or vibrational strong coupling (ESC and VSC) with confined electromagnetic fields. While these have been widely studied, the influence of electron-nuclear dynamics in driven cavities remains largely unknown. Here, we report a previously unrecognized mechanism of vibrational activation that emerges […]


Continue.. Collective Rabi-driven vibrational activation in molecular polaritons

Collective Rabi-driven vibrational activation in molecular polaritons

Kavli Affiliate: Carlos Bustamante | Summary:Molecular polaritons arise from electronic or vibrational strong coupling (ESC and VSC) with confined electromagnetic fields. While these have been widely studied, the influence of electron-nuclear dynamics in driven cavities remains largely unknown. Here, we report a previously unrecognized mechanism of vibrational activation that emerges under collective ESC in driven […]


Continue.. Collective Rabi-driven vibrational activation in molecular polaritons

A Sublinear-Time Quantum Algorithm for High-Dimensional Reaction Rates

Kavli Affiliate: Birgitta Whaley | Summary:The Fokker-Planck equation models rare events across sciences, but its high-dimensional nature challenges classical computers. Quantum algorithms for such non-unitary dynamics often suffer from exponential decay in success probability. We introduce a quantum algorithm that overcomes this for computing reaction rates. Using a sum-of-squares representation, we develop a Gaussian linear […]


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Provable Quantum Speedups for Reaction-Rate Estimation in High-Dimensional Fokker-Planck Dynamics

Kavli Affiliate: Birgitta Whaley | Summary:The Fokker-Planck equation models rare events across sciences, but bluedirect solution of the PDE is intractable for classical computers due to its high-dimensional nature. Classical stochastic methods circumvent this curse-of-dimensionality, and serve as the de facto standard for practicing computational scientists. Quantum algorithms for such non-unitary dynamics often suffer from […]


Continue.. Provable Quantum Speedups for Reaction-Rate Estimation in High-Dimensional Fokker-Planck Dynamics

Optimal control of bit erasure in stochastic random access memory

Kavli Affiliate: David T. Limmer | Summary:Energy costs of information processing are growing exponentially. Bit erasure is a key problem in this energy-information nexus, and a number of seminal relationships have been deduced regarding the relationship between thermodynamic costs and memory storage. To continue making progress in the modern era, however, requires confronting thermodynamic costs […]


Continue.. Optimal control of bit erasure in stochastic random access memory

Optimal control of bit erasure in stochastic random access memory

Kavli Affiliate: David T. Limmer | Summary:Energy costs of information processing are growing exponentially. Bit erasure is a key problem in this energy-information nexus, and a number of seminal relationships have been deduced regarding the relationship between thermodynamic costs and memory storage. To continue making progress in the modern era, however, requires confronting thermodynamic costs […]


Continue.. Optimal control of bit erasure in stochastic random access memory

Enhanced Interlayer Coupling and Excitons in Twin-Stacked Two-Dimensional Magnetic CrSBr Bilayers

Kavli Affiliate: Jeffrey Neaton | Summary:The degree of electronic coupling between individual layers in few-layer van der Waals heterostructures offers a route to engineer their magnetic, electronic, and optical functionalities. Using state-of-the-art first-principles calculations, we demonstrate that the electronic coupling between two monolayers of CrSBr, an anisotropic two-dimensional magnetic semiconductor, is highly nonlinear and nonmonotonic […]


Continue.. Enhanced Interlayer Coupling and Excitons in Twin-Stacked Two-Dimensional Magnetic CrSBr Bilayers

Atomic Alignment in PbS Nanocrystal Superlattices with Compact Inorganic Ligands via Reversible Oriented Attachment of Nanocrystals

Kavli Affiliate: David T. Limmer | Summary:Nanocrystals (NCs) serve as versatile building blocks for the creation of functional materials, with NC self-assembly offering opportunities to enable novel material properties. Here, we demonstrate that PbS NCs functionalized with strongly negatively charged metal chalcogenide complex (MCC) ligands, such as $Sn_2S_6^4-$ and $AsS_4^3-$, can self-assemble into all-inorganic superlattices […]


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Spin-Valley Locking in 2H-TaS2 and Its Co-Intercalated Counterpart: Roles of Surface Domains and Co Intercalation

Kavli Affiliate: James Analytis| Summary:Tuning and probing spin-valley coupling is key to understanding correlated ground states in 2$itH$-TaS$_2$. Its magnetically intercalated analogue, Co$_1/3$TaS$_2$, introduces additional degrees of freedom, including modified interlayer coupling and magnetism, to modulate spin-valley physics. Surface-sensitive probes like ARPES are essential for accessing surface spin texture, yet previous studies on 2$itH$-TMDs have […]


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Discovery of Van Hove Singularities: Electronic Fingerprints of 3Q Magnetic Order in a van der Waals Quantum Magnet

Kavli Affiliate: Alessandra Lanzara | Summary:Magnetically intercalated transition metal dichalcogenides are emerging as a rich platform for exploring exotic quantum states in van der Waals magnets. Among them, CoxTaS2 has attracted intense interest following the recent discovery of a distinctive 3Q magnetic ground state and a pronounced anomalous Hall effect below a critical doping of […]


Continue.. Discovery of Van Hove Singularities: Electronic Fingerprints of 3Q Magnetic Order in a van der Waals Quantum Magnet