Kavli Affiliate: Eliska Greplova | First 5 Authors: Ana Silva, Ana Silva, , , | Summary: As quantum technology matures, the efficient benchmarking of quantum devices remains a key challenge. Although sample-efficient, information-theoretic benchmarking techniques have recently been proposed, there is still a gap in adapting these techniques to contemporary experiments. In this work, we […]
Kavli Affiliate: Simon Groblacher | First 5 Authors: Soroush Khademi, Soroush Khademi, , , | Summary: Weak quantum measurements enable real-time tracking and control of dynamical quantum systems, producing quantum trajectories — evolutions of the quantum state of the system conditioned on measurement outcomes. For classical systems, the accuracy of trajectories can be improved by […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Karina Hudson, Karina Hudson, , , | Summary: Constricting transport through a one-dimensional quantum point contact in the quantum Hall regime enables gate-tunable selection of the edge modes propagating between voltage probe electrodes. Here we investigate the quantum Hall effect in a quantum point contact fabricated on […]
Kavli Affiliate: Michael Wimmer | First 5 Authors: Elias Kristmann, Elias Kristmann, , , | Summary: Although variable-rate compressed image formats such as JPEG are widely used to efficiently encode images, they have not found their way into real-time rendering due to special requirements such as random access to individual texels. In this paper, we […]
Kavli Affiliate: Michael Wimmer | First 5 Authors: Juan Daniel Torres Luna, Juan Daniel Torres Luna, , , | Summary: To observe Majorana bound states, and especially to use them as a qubit, requires careful optimization of competing quality metrics. We systematically compare Majorana quality in proximitized semiconductor nanowires and quantum dot chains. Using multi-objective […]
Kavli Affiliate: Natalia Chepiga | First 5 Authors: Julien Fitouchi, Julien Fitouchi, , , | Summary: We investigate the zero-magnetization phase diagram of a spin-1/2 chain with competing ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor exchange couplings in the strongly interacting regime. Using density matrix renormalization group (DMRG) simulations, we discover two successive commensurate-incommensurate transitions of the […]
Kavli Affiliate: Herre S. J. Van Der Zant | First 5 Authors: Raphaela de Oliveira, Raphaela de Oliveira, , , | Summary: Biotite crystals are phyllosilicate trioctahedral micas with the general chemical formula K(Mg,Fe)3AlSi3O10(OH)2 that form a solid-solution series with iron-poor phlogopite and iron-rich annite endmembers. With a wide band gap energy and a layered […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Mats Volmer, Mats Volmer, , , | Summary: Silicon quantum chips offer a promising path toward scalable, fault-tolerant quantum computing, with the potential to host millions of qubits. However, scaling up dense quantum-dot arrays and enabling qubit interconnections through shuttling are hindered by uncontrolled lateral variations of […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Asser Elsayed, Asser Elsayed, , , | Summary: Understanding scattering mechanisms in semiconductor heterostructures is crucial to reducing sources of disorder and ensuring high yield and uniformity in large spin qubit arrays. Disorder of the parent two-dimensional electron or hole gas is commonly estimated by the critical, […]
Kavli Affiliate: Eliska Greplova | First 5 Authors: D. O. Oriekhov, D. O. Oriekhov, , , | Summary: Much attention has been devoted to the use of machine learning to approximate physical concepts. Yet, due to challenges in interpretability of machine learning techniques, the question of what physics machine learning models are able to learn […]