Observation of two-component exciton condensates in an excitonic insulator

Kavli Affiliate: Michael Crommie | Summary:Macroscopic quantum coherence emerges when bosons condense into a Bose-Einstein condensate (BEC). First observed as a single-component superfluid in helium, BECs later emerged in ultracold atomic gases at nanokelvin temperatures as weakly interacting quantum fluids, which can also host multicomponent spinor condensates with rich internal degrees of freedom. Excitons provide […]


Continue.. Observation of two-component exciton condensates in an excitonic insulator

Hybrid Analog-Digital Simulation of the Abelian Higgs model

Kavli Affiliate: Irfan Siddiqi | Summary:To investigate gauge theories with near-term quantum computers warrants exploration of nontraditional quantum simulators to find resource-efficient simulation protocols and ultimately access exotic features of different field theories, including unexplored regimes of the QCD phase diagram. In this work, using superconducting transmon qutrit processors, we formulate and implement a pulse-based, […]


Continue.. Hybrid Analog-Digital Simulation of the Abelian Higgs model

Pattern stability in reaction-diffusion systems depends on path entropy

Kavli Affiliate: David T. Limmer | Summary:Reaction-diffusion systems driven far from thermodynamic equilibrium through the injection of energy can support multiple distinct spatial patterns that persist as long-lived dynamical phases. The stability of these metastable phases is not determined by thermodynamics, but by the transition paths connecting them. At finite particle numbers, intrinsic stochasticity induces […]


Continue.. Pattern stability in reaction-diffusion systems depends on path entropy

Pattern stability in reaction-diffusion systems depends on path entropy

Kavli Affiliate: David T. Limmer | Summary:Reaction-diffusion systems driven far from thermodynamic equilibrium through the injection of energy can support multiple spatial patterns that persist as long-lived dynamical phases. The stability of these metastable phases is not determined by thermodynamics, but by the transition paths connecting them. At finite particle numbers, intrinsic stochasticity induces rare […]


Continue.. Pattern stability in reaction-diffusion systems depends on path entropy

GPU-accelerated single-cell analysis at scale with rapids-singlecell

Kavli Affiliate: Felix Fischer | Summary:Single-cell sequencing technologies reveal cellular heterogeneity at high resolution, advancing our understanding of biological complexity. As datasets start to scale to tens of millions of cells, computational workflows face substantial bottlenecks, with CPU-based analytical pipelines requiring hours or days for routine processing steps like filtering, normalization, and clustering. These scalability […]


Continue.. GPU-accelerated single-cell analysis at scale with rapids-singlecell

Experimental characterization of coherent and non-Markovian errors using tangent space decomposition

Kavli Affiliate: Birgitta Whaley | Summary:Accurate characterization of coherent and non-Markovian errors remains a central challenge in quantum information processing, as conventional benchmarking techniques typically rely on Markovian and time-independent noise assumptions. In practice, however, quantum devices exhibit both systematic coherent miscalibrations and temporally correlated fluctuations, which complicate error diagnosis and mitigation. Here, we apply […]


Continue.. Experimental characterization of coherent and non-Markovian errors using tangent space decomposition

Identification of Solid-Electrolyte Interphase Species by Joint Characterization of Li-ion Battery Chemistry by Mass Spectrometry and Electro-Chemical Reaction Networks

Kavli Affiliate: Kristin Persson | Summary:The formation and stability of the solid electrolyte interphase (SEI) play a central role in determining the long-term performance and safety of modern electrochemical energy storage systems. Despite decades of research, the SEI’s heterogeneous, dynamic, and multi-phase nature has defied comprehensive molecular-level characterization, creating a critical knowledge gap that limits […]


Continue.. Identification of Solid-Electrolyte Interphase Species by Joint Characterization of Li-ion Battery Chemistry by Mass Spectrometry and Electro-Chemical Reaction Networks

Flux Pumped Kerr-Free Parametric Amplifier

Kavli Affiliate: Irfan Siddiqi | Summary:We propose a flux-pumped superconducting parametric amplifier based on symmetrically threaded superconducting quantum interference devices (SQUIDs) that achieves a Kerr-free operating point under suitable drive conditions. Eliminating the Kerr nonlinearity is advantageous for quantum-limited amplification, as it mitigates unwanted distortions in squeezing and prevents degradation of both gain and quantum […]


Continue.. Flux Pumped Kerr-Free Parametric Amplifier

Consistent inclusion of triple substitutions within a coupled cluster based static quantum embedding theory

Kavli Affiliate: Birgitta Whaley | Summary:We incorporate a solver for the fragment problem with accuracy beyond coupled cluster singles and doubles (CCSD) into the previously proposed static embedding framework, MPCC. To this end, we employ a CCSDT solver for the fragment subsystem. For the environment subsystem, we construct a perturbative estimate of the triples amplitudes, […]


Continue.. Consistent inclusion of triple substitutions within a coupled cluster based static quantum embedding theory

Field-driven Ion Pairing Dynamics in Concentrated Electrolytes

Kavli Affiliate: David T. Limmer | Summary:We investigate ion pairing dynamics in electrolytes driven far from equilibrium using molecular simulations and nonequilibrium rate theory. Focusing on 0.5 M $mathrmLiPF_6$ in water and acetonitrile under uniform electric fields, we compute transition path theory observables including reactive fluxes and mean first-passage times of ion pairing. Moreover, we […]


Continue.. Field-driven Ion Pairing Dynamics in Concentrated Electrolytes