Seeing the Unseen: AI Spots Anomalies in Complex MRI Scans
A new deep learning framework offers robust anomaly detection in multi-sequence MRI data, even when critical scan types are missing.
Science
Can Simulated People Replace Real-World Testing for Algorithms?
A new study explores whether using AI to mimic human behavior can provide a reliable alternative to costly and complex field experiments for evaluating machine learning methods.
Transformers Unlock the Secrets of Dynamic Systems
New research reveals how transformer architectures learn to represent and predict the behavior of complex, evolving systems.
Beyond the Trap: Solving Nonlinear Schrödinger Equations with Hermite Functions
![The numerical solution demonstrates a global error level at [latex]T=1.0[/latex] with a discretization of [latex]N=500[/latex].](https://arxiv.org/html/2512.20840v1/x8.png)
Researchers demonstrate a robust method for simulating wave-like phenomena in unbounded spaces, overcoming limitations of traditional harmonic potential-based approaches.
Graphene Takes Shape: 3D Circuits Advance Quantum Architectures
![This device fabricates a two-qubit superconducting circuit from graphene, integrating it with a three-dimensional copper cavity to enable quantum interactions-specifically, a SQUID-based qubit and a single-Josephson junction qubit are capacitively coupled to a microwave resonator via [latex]C_{g1}[/latex], [latex]C_{g2}[/latex], and [latex]C_{g12}[/latex], demonstrating a pathway toward scalable quantum computation leveraging the unique properties of this two-dimensional material.](https://arxiv.org/html/2512.21213v1/Fig1.jpg)
Researchers are leveraging three-dimensional cavity designs to integrate graphene-based superconducting circuits, opening new pathways for scalable quantum computing.
Weaving Light for Quantum Control
![The architecture leverages a lattice of interconnected pentapods-distinguished by left (0) and right (1) configurations and coupled via hopping terms [latex]J_{x_L}[/latex] and [latex]J_{x_R}[/latex]-to encode quantum states [latex]|b(s_1, s_2, p)\rangle[/latex] with control qubits [latex]s_1, s_2 = \pm[/latex] and a target qubit [latex]p = 0, 1[/latex], achieving eight zero-energy degenerate eigenstates at initial parameters [latex]J_{\ell p} = 0[/latex] and demonstrating the successful implementation of both Toffoli and OR quantum gates through state tomography and precise modulation of the driving cycle.](https://arxiv.org/html/2512.21101v1/x4.png)
Researchers demonstrate a novel approach to building quantum computers by harnessing the geometric properties of light within photonic circuits.
When Seeing Isn’t Believing: A New Approach to Fake News Detection
Researchers are shifting focus from aligning image and text to actively identifying discrepancies, leading to a more robust defense against deceptive content.
Molecular Alignment on Demand
![Symmetric molecules experience enhanced, unidirectional field-free orientation via a single resonant pulse that selectively couples an initial rotational state [latex]|J_0K_0M_0\rangle[/latex] to an adjacent state [latex]|J_0+1K_0M_0\rangle[/latex], a process demonstrated through a two-state excitation model where the angle [latex]\theta[/latex] between the molecular axis and laser polarization dictates the resulting periodic evolution and angular distribution of the rotational wave packet.](https://arxiv.org/html/2512.21012v1/fig1.png)
Researchers have devised a method for precisely controlling the orientation of molecules in space using only carefully shaped light pulses.
Hot Hydrogen’s Hidden Impact on Planetary Atmospheres
![The study details state-to-state cross sections-[latex]\sigma_{j=0\to j^{\prime}}[/latex]-for collisions between carbon dioxide and hydrogen, demonstrating how reaction pathways diverge based on initial and final energy states at selected collision energies.](https://arxiv.org/html/2512.21044v1/x1.png)
New quantum calculations reveal that current models of atmospheric escape may significantly overestimate collision rates between hydrogen and carbon dioxide.
Spin Control at Telecom Wavelengths: A Quantum Dot Advance
![The reconstructed trajectory of a ground state hole spin reveals coherent precession, characterized by damped oscillatory behavior in its [latex]S_x[/latex], [latex]S_y[/latex], and [latex]S_z[/latex] components, and a precession plane inclined relative to the conventional [latex]y-z[/latex] plane, indicating complex dynamics within the ground state.](https://arxiv.org/html/2512.20870v1/Section_2/figure_4.png)
Researchers have achieved full quantum-state tomography of a heavy-hole spin within a quantum dot operating in the crucial telecom C-band.