5 papers
Feedback stabilization of multi-qubit Hamiltonian parameters enabled by single-shot measurement-based sequential Monte Carlo
Hyeongyu Jang, Jaemin Park, Younguk Song +6
The paper presents a real‑time feedback system that uses sequential Monte Carlo estimation with single‑shot measurement data to quickly estimate and stabilize both single‑qubit fre…
Mapping g-factors and complex intervalley coupling in Si/SiGe by conveyor-mode shuttling
Mats Volmer, Tom Struck, Arnau Sala +7
The authors present a technique to map nanoscale variations of the electron g‑factor and complex intervalley coupling in planar Si/SiGe quantum dots by shuttling entangled spin pai…
Confinement drives valley splitting above 4K in buried silicon quantum wells
Davide Degli Esposti, Emma Catherine Brann, Asser Elsayed +3
Controlling the energy scales of a quantum system is essential for defining robust qubits. In silicon spin qubits, the nearly degenerate conduction-band valleys create a leakage ch…
Weight-four parity checks with silicon spin qubits
Brennan Undseth, Nicola Meggiato, Yi-Hsien Wu +7
Recent advances in coherent spin shuttling have made sparse semiconductor spin qubit arrays an appealing solid-state platform to realize quantum processors. The dynamic and long-ra…
Quantum oscillations in two-dimensional hole gases with competing cyclotron and Zeeman energy
Davide Costa, Lucas E. A. Stehouwer, Davide Degli Esposti +1
Evaluation of critical bandstructure and quantum transport parameters in two-dimensional systems is challenging when competition emerges among different energy scales shaping quant…