Kavli Affiliate: Menno Veldhorst | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]
Kavli Affiliate: Menno Veldhorst | First 5 Authors: Valentin John, Cécile X. Yu, Barnaby van Straaten, Esteban A. Rodríguez-Mena, Mauricio Rodríguez | Summary: Quantum computers require the systematic operation of qubits with high fidelity. For holes in germanium, the spin-orbit interaction allows for textit{in situ} electric fast and high-fidelity qubit gates. However, the interaction also […]
Kavli Affiliate: Anton R. Akhmerov | First 5 Authors: R. Johanna Zijderveld, Isidora Araya Day, Anton R. Akhmerov, , | Summary: The surface states of intrinsic higher order topological phases are protected by the spatial symmetries of a finite sample. This property makes the existing scattering theory of topological invariants inapplicable because the scattering geometry […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Florian K. Unseld, Brennan Undseth, Eline Raymenants, Yuta Matsumoto, Saurabh Karwal | Summary: Micromagnet-enabled electric-dipole spin resonance (EDSR) is an established method of high-fidelity single-spin control in silicon. However, the resulting architectural limitations have restrained silicon quantum processors to one-dimensional arrays, and heating effects from the associated […]
Kavli Affiliate: Eliska Greplova | First 5 Authors: Guliuxin Jin, D. O. Oriekhov, Lukas Johannes Splitthoff, Eliska Greplova, | Summary: Topological phases of matter have been widely studied for their robustness against impurities and disorder. The broad applicability of topological materials relies on the reliable transition from idealized, mathematically perfect models to finite, real-world implementations. […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Takashi Kobayashi, Akito Noiri, Takashi Nakajima, Kenta Takeda, Leon C. Camenzind | Summary: An electron confined by a semiconductor quantum dot (QD) can be displaced by changes in electron occupations of surrounding QDs owing to the Coulomb interaction. For a single-spin qubit in an inhomogeneous magnetic field, […]
Kavli Affiliate: Toeno Van Der Sar | First 5 Authors: Samuel Mañas-Valero, Toeno van der Sar, Rembert A. Duine, Bart van Wees, | Summary: Spintronics is concerned with replacing charge current with current of spin, the electron’s intrinsic angular momentum. In magnetic insulators, spin currents are carried by magnons, the quanta of spin-wave excitations on […]
Kavli Affiliate: Menno Veldhorst | First 5 Authors: Anantha S. Rao, Donovan Buterakos, Barnaby van Straaten, Valentin John, Cécile X. Yu | Summary: Arrays of gate-defined semiconductor quantum dots are among the leading candidates for building scalable quantum processors. High-fidelity initialization, control, and readout of spin qubit registers require exquisite and targeted control over key […]
Kavli Affiliate: Menno Veldhorst | First 5 Authors: Lucas E. A. Stehouwer, Cécile X. Yu, Barnaby van Straaten, Alberto Tosato, Valentin John | Summary: Disorder in the heterogeneous material stack of semiconductor spin qubit systems introduces noise that compromises quantum information processing, posing a challenge to coherently control large-scale quantum devices. Here, we exploit low-disorder […]
Kavli Affiliate: Andrea D. Caviglia | First 5 Authors: Ulderico Filippozzi, Graham Kimbell, Davide Pizzirani, Siobhan McKeown Walker, Chiara Cocchi | Summary: We study the superconducting critical fields of two-dimensional electron systems at (111)$mathrm{LaAlO_3/KTaO_3}$ interfaces as a function of electrostatic back-gating. Our work reveals inplane critical fields of unprecedented magnitudes at oxide interfaces. By comparing […]