Nanoscience – Page 2 – Kavli Institute Pre-Print Publications

Electronic Structure of Epitaxial Films of the Bilayer Strontium Ruthenate: Sr$_3$Ru$_2$O$_7$

Posted by klaurent February 8, 2026Cornell

Kavli Affiliate: Darrell Schlom | Summary:We report the first combined study of the low-energy electronic band structure of epitaxial Sr$_3$Ru$_2$O$_7$ films using angle-resolved photoemission spectroscopy and density functional theory. The complete Fermi-surface topography of the near-Fermi-level bands is determined from in-situ ARPES measurements. To investigate the effects of substrate-induced strain on the band structure, Sr$_3$Ru$_2$O$_7$ […]

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The impact of spurious imaginary phonon modes on thermal properties of Metal-organic Frameworks

Posted by klaurent February 7, 2026Berkeley

Kavli Affiliate: Kristin Persson | Summary:Metal-organic Frameworks (MOFs) have emerged as potential candidates for direct air capture (DAC) of green house gases and water. Thermal properties of MOFs, such as their heat capacity, are used to determine the energy penalty associated with the adsorbent retrieval during the Temperature Swing Adsorption process. To aid exploration of […]

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Visible dual-comb spectroscopy across more than 100 THz with lithium niobate nanophotonic waveguides

Posted by klaurent February 6, 2026Caltech

Kavli Affiliate: Alireza Marandi | Summary:Broadband and high-resolution spectroscopy in the visible and ultraviolet is central to advances in multiple fields, including fundamental quantum physics, biology, atmospheric science and astronomy. Traditionally, these measurements are performed with grating or Fourier-transform spectrometers using incoherent light sources. Leveraging coherent light enables powerful frequency-comb-based techniques, but is limited by […]

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Low-temperature spin dynamics in LAFO thin films: from cubic anisotropy to TLS-limited coherence

Posted by klaurent February 5, 2026February 18, 2026Cornell

Kavli Affiliate: Gregory D. Fuchs | Summary:We investigate the low-temperature spin dynamics of epitaxial lithium aluminum ferrite (LAFO) thin films using broadband ferromagnetic resonance (FMR) spectroscopy from 0.44 K to 68 K. The results reveal a crossover from conventional cubic anisotropy-dominated behavior at higher temperatures to pronounced linewidth broadening and higher-order anisotropy contributions at cryogenic […]

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Information, Dissipation, and Planckian Optimality

Posted by klaurent February 4, 2026February 18, 2026Cornell

Kavli Affiliate: Debanjan Chowdhury | Summary:We derive a universal bound on the efficiency with which "dissipated" work can generate distinguishable changes in a quantum many-body state at a finite temperature, as quantified by the quantum Fisher information. The bound follows solely from the analytic structure of equilibrium many-body correlators and is independent of all microscopic […]

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Requirements for Teleportation in an Intercity Quantum Network

Posted by klaurent February 4, 2026February 18, 2026Delft

Kavli Affiliate: Stephanie Wehner | Summary:We investigate the hardware requirements for quantum teleportation in an intercity-scale network topology consisting of two metropolitan-scale networks connected via a long-distance backbone link. Specifically, we identify the minimal improvements required beyond the state-of-the-art to achieve an end-to-end expected teleportation fidelity of $2/3$, which represents the classical limit. To this […]

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Entanglement improves coordination in distributed systems

Posted by klaurent February 4, 2026February 18, 2026Delft

Kavli Affiliate: Stephanie Wehner | Summary:Coordination in distributed systems is often hampered by communication latency, which degrades performance. Quantum entanglement offers fundamentally stronger correlations than classically achievable without communication. Crucially, these correlations manifest instantaneously upon measurement, irrespective of the physical distance separating the systems. We investigate the application of shared entanglement to a dual-work optimization […]

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A Tunable, Modeless, and Hybridization-free Cross-Kerr Coupler for Miniaturized Superconducting Qubits

Posted by klaurent February 3, 2026February 18, 2026Caltech

Kavli Affiliate: Oskar Painter | Summary:Superconducting quantum circuits typically use capacitive charge-based linear coupling schemes to control interactions between elements such as qubits. While simple and effective, this coupling scheme makes it difficult to satisfy competing circuit design requirements such as maintaining large qubit anharmonicity and coherence along with a high degree of qubit connectivity […]

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Revealing Short- and Long-range Li-ion diffusion in Li$_2$MnO$_3$ from finite-temperature dynamical mean field theory

Posted by klaurent February 2, 2026February 18, 2026Berkeley

Kavli Affiliate: Kristin Persson | Summary:Li$_2$MnO$_3$ remains a crucial component of the Li-excess layered cathode family, $(1-x),mathrmLiMO_2 + x,mathrmLi_2MnO_3$ ($M$ = Mn, Ni, Co, dots), but its role in limiting Li-ion mobility remains under debate. Here we combine DFT+$U$, finite-temperature DMFT with a continuous-time quantum Monte Carlo impurity solver, and nudged-elastic-band (NEB) calculations to investigate […]

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Visualizing the Odd-parity Superconducting Order Parameter and its Quasiparticle Surface Band in UTe2

Posted by klaurent February 2, 2026February 18, 2026Cornell

Kavli Affiliate: J. C. Seamus Davis | Summary:A distinctive identifier of nodal intrinsic topological superconductivity (ITS) would the appearance of an Andreev bound state on crystal surfaces parallel to the nodal axis, in the form of a topological quasiparticle surface band (QSB) appearing only for $T < T_C$. Moreover, theory shows that specific QSB characteristics […]

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