24 citations · 85 across the 19 of their papers we have counts for
6 papers · 1 filter
Density Matrix Renormalization Group Study of Domain Wall Qubits
Guanxiong Qu, Ji Zou, Daniel Loss +1
Nanoscale topological spin textures in magnetic systems are emerging as promising candidates for scalable quantum architectures. Despite their potential as qubits, previous studies…
The origins of noise in the Zeeman splitting of spin qubits in natural-silicon devices
Juan S. Rojas-Arias, Yohei Kojima, Kenta Takeda +7
We measure and analyze noise-induced energy-fluctuations of spin qubits defined in quantum dots made of isotopically natural silicon. Combining Ramsey, time-correlation of single-s…
A coherence sweet spot with enhanced dipolar coupling
Jann H. Ungerer, Alessia Pally, Stefano Bosco +9
Qubits require a compromise between operation speed and coherence. Here, we demonstrate a compromise-free singlet-triplet (ST) qubit, where the qubit couples maximally to the drivi…
Coherence limit due to hyperfine interaction with nuclei in the barrier material of Si spin qubits
Lukas Cvitkovich, Peter Stano, Christoph Wilhelmer +4
On the quest to understand and reduce environmental noise in Si spin qubits, hyperfine interactions between electron and nuclear spins impose a major challenge. Silicon is a promis…
Quantification of the heavy-hole--light-hole mixing in two-dimensional hole gases
Peter Stano, Daniel Loss
We theoretically investigate heavy-hole--light-hole mixing in two-dimensional hole gases (2DHG). We restrict our analysis to the zone center, appropriate for the low-density regime…
Compromise-Free Scaling of Qubit Speed and Coherence
Miguel J. Carballido, Simon Svab, Rafael S. Eggli +12
Across leading qubit platforms, a common trade-off persists: increasing coherence comes at the cost of operational speed, reflecting the notion that protecting a qubit from its noi…