Kavli Affiliate: Giordano Scappucci | First 5 Authors: Davide Costa, Davide Costa, , , | Summary: Ge and Si strained quantum wells have enabled the most advanced spin-qubit quantum processors, but they are deposited on defective, metamorphic SiGe substrates, which may impact device performance and scaling. Here we introduce an alternative platform, based on a […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Lucas E. A. Stehouwer, Merrit P. Losert, Maia Rigot, Davide Degli Esposti, Sara Martí-Sánchez | Summary: Electron spin qubits in Si/SiGe quantum wells are limited by the small and variable energy separation of the conduction band valleys. While sharp quantum well interfaces are pursued to increase the […]
Kavli Affiliate: Jos W. Zwanikken | First 5 Authors: Tamara Mijatović, Aimée R. Kok, Jos W. Zwanikken, Marianne Bauer, | Summary: Transcription factor concentrations provide signals to cells that allow them to regulate gene expression to make correct cell fate decisions. Calculations for noise bounds in gene regulation suggest that clustering or cooperative binding of […]
Kavli Affiliate: Stephanie Wehner | First 5 Authors: Samuel Oslovich, Bart van der Vecht, Stephanie Wehner, , | Summary: Execution of quantum network applications requires a software stack for nodes. Recently, the first designs and demonstrations have been proposed for such software stacks, including QNodeOS and its extension, Qoala. The latter enables compilation strategies previously […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Juan S. Rojas-Arias, Akito Noiri, Jun Yoneda, Peter Stano, Takashi Nakajima | Summary: We investigate low-frequency noise in a spin-qubit device made in isotopically purified Si/Si-Ge. Observing sizable cross-correlations among energy fluctuations of different qubits, we conclude that these fluctuations are dominated by charge noise. At low […]
Kavli Affiliate: Sander Otte | First 5 Authors: Minxing Xu, Robbie J. G. Elbertse, Ata Keşkekler, Giuseppe Bimonte, Jinwon Lee | Summary: The Casimir effect and superconductivity are foundational quantum phenomena whose interaction remains an open question in physics. How Casimir forces behave across a superconducting transition remains unresolved, owing to the experimental difficulty of […]
Kavli Affiliate: Giordano Scappucci | First 5 Authors: Alberto Tosato, Asser Elsayed, Federico Poggiali, Lucas Stehouwer, Davide Costa | Summary: Large-scale integration of semiconductor spin qubits into industrial quantum processors hinges on the ability to characterize the performance of quantum components at scale. While the semiconductor industry has addressed scalable testing for transistors using device […]
Kavli Affiliate: Michael Wimmer | First 5 Authors: , , , , | Summary: The easily accessible experimental signatures of Majorana modes are ambiguous and only probe topology indirectly: for example, quasi-Majorana states mimic most properties of Majoranas. Establishing a correspondence between an experiment and a theoretical model known to be topological resolves this ambiguity. […]
Kavli Affiliate: Menno Veldhorst | First 5 Authors: Daniel Jirovec, Pablo Cova Fariña, Stefano Reale, Stefan D. Oosterhout, Xin Zhang | Summary: Coupled spins in semiconductor quantum dots are a versatile platform for quantum computing and simulations of complex many-body phenomena. However, on the path of scale-up, cross-talk from densely packed electrodes poses a severe […]
Kavli Affiliate: Menno Veldhorst | First 5 Authors: Daniel Jirovec, Pablo Cova Fariña, Stefano Reale, Stefan D. Oosterhout, Xin Zhang | Summary: Coupled spins in semiconductor quantum dots are a versatile platform for quantum computing and simulations of complex many-body phenomena. However, on the path of scale-up, cross-talk from densely packed electrodes poses a severe […]