Gate reflectometry in a minimal Kitaev chain device

Kavli Affiliate: Srijit Goswami | Summary:Hybrid quantum dot (QD)-superconductor system can be used to realize Majorana zero modes in artificial Kitaev chains. These chains provide a promising platform for the realization of Majorana qubits. Radio-frequency (RF) gate reflectometry is a fast, non-invasive, and sensitive technique that can be used to read out such qubits. In […]


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A multi-dimensional quantum estimation and model learning framework based on variational Bayesian inference

Kavli Affiliate: Tim H. Taminiau | Summary:The advancement and scaling of quantum technology has made the learning and identification of quantum systems and devices in highly-multidimensional parameter spaces a pressing task for a variety of applications. In many cases, the integration of real-time feedback control and adaptive choice of measurement settings places strict demands on […]


Continue.. A multi-dimensional quantum estimation and model learning framework based on variational Bayesian inference

A multi-dimensional quantum estimation and model learning framework based on variational Bayesian inference

Kavli Affiliate: Tim H. Taminiau | Summary:The advancement and scaling of quantum technology has made the learning and identification of quantum systems and devices in highly-multidimensional parameter spaces a pressing task for a variety of applications. In many cases, the integration of real-time feedback control and adaptive choice of measurement settings places strict demands on […]


Continue.. A multi-dimensional quantum estimation and model learning framework based on variational Bayesian inference

On-chip stencil lithography for superconducting qubits

Kavli Affiliate: Gary Steele | Summary:Improvements in circuit design and more recently in materials and surface cleaning have contributed to a rapid development of coherent superconducting qubits. However, organic resists commonly used for shadow evaporation of Josephson junctions (JJs) pose limitations due to residual contamination, poor thermal stability and compatibility under typical surface-cleaning conditions. To […]


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Small Quantum Low Parity Density Check Codes for Near-Term Experiments

Kavli Affiliate: Eliska Greplova| First 5 Authors: Christian Kraglund Andersen, Christian Kraglund Andersen, , , | Summary:It is widely accepted that quantum error correction is essential for realizing large-scale fault-tolerant quantum computing. Recent experiments have demonstrated error correction codes operating below threshold, primarily using local planar codes such as the surface code and color code. […]


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Amorphous Silicon-Carbide Photonics for Ultrasound Imaging

Kavli Affiliate: P. G. Steeneken| First 5 Authors: R. Tufan Erdogan, R. Tufan Erdogan, , , | Summary:Photonic ultrasound sensors offer unparalleled potential for improving spatial and temporal resolution in ultrasound imaging applications due to their size-independent noise figure, high sensitivity, and broad bandwidth characteristics. The exploration of optical materials in ultrasound sensing has attracted […]


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Single-shot parity readout of a minimal Kitaev chain

Kavli Affiliate: L. P. Kouwenhoven| First 5 Authors: Nick van Loo, Nick van Loo, , , | Summary:Protecting qubits from noise is essential for building reliable quantum computers. Topological qubits offer a route to this goal by encoding quantum information non-locally, using pairs of Majorana zero modes. These modes form a shared fermionic state whose […]


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Cascade of Modal Interactions in Nanomechanical Resonators with Soft Clamping

Kavli Affiliate: P. G. Steeneken| First 5 Authors: Zichao Li, Zichao Li, , , | Summary:Cascades of dynamical phenomena, where energy and motion transfer across coupled degrees of freedom, underlie complex behavior in physical systems spanning multiple time and length scales. Here, we demonstrate that soft-clamping techniques commonly employed to enhance the quality factor of […]


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Photonics in Flatland: Challenges and Opportunities for Nanophotonics with 2D Semiconductors

Kavli Affiliate: Sonia Conesa-Boj | Summary:Two-dimensional (2D) semiconductors are emerging as a versatile platform for nanophotonics, offering unprecedented tunability in optical properties through exciton resonance engineering, van der Waals heterostructuring, and external field control. These materials enable active optical modulation, single-photon emission, quantum photonics, and valleytronic functionalities, paving the way for next-generation optoelectronic and quantum […]


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Anomalous refractive index modulation and giant birefringence in 2D ferrielectric CuInP$_2$S$_6$

Kavli Affiliate: Mazhar Ali | Summary: 2D ferroelectric (FE) materials have opened new opportunities in non-volatile memories, computation and non-linear optics due to their robust polarization in the ultra-thin limit and inherent flexibility in device integration. Recently, interest has grown in the use of 2D FEs in electro-optics, demanding the exploration of their electronic and […]


Continue.. Anomalous refractive index modulation and giant birefringence in 2D ferrielectric CuInP$_2$S$_6$