Spatial noise correlations beyond nearest neighbors in Si-Ge spin qubits
We detect correlations in qubit-energy fluctuations of non-neighboring qubits defined in
isotopically purified Si/Si-Ge quantum dots. At low frequencies (where the noise is …
isotopically purified Si/Si-Ge quantum dots. At low frequencies (where the noise is …
Low disorder and high valley splitting in silicon
The electrical characterisation of classical and quantum devices is a critical step in the
development cycle of heterogeneous material stacks for semiconductor spin qubits. In the …
development cycle of heterogeneous material stacks for semiconductor spin qubits. In the …
[HTML][HTML] Germanium wafers for strained quantum wells with low disorder
We grow strained Ge/SiGe heterostructures by reduced-pressure chemical vapor deposition
on 100 mm Ge wafers. The use of Ge wafers as substrates for epitaxy enables high-quality …
on 100 mm Ge wafers. The use of Ge wafers as substrates for epitaxy enables high-quality …
Impact of interface traps on charge noise and low-density transport properties in Ge/SiGe heterostructures
Abstract Hole spins in Ge/SiGe heterostructures have emerged as an interesting qubit
platform with favourable properties such as fast electrical control and noise-resilient …
platform with favourable properties such as fast electrical control and noise-resilient …
Decoherence induced by a sparse bath of two-level fluctuators: Peculiar features of noise in high-quality qubits
M Mehmandoost, VV Dobrovitski - Physical Review Research, 2024 - APS
Progress in fabrication of semiconductor and superconductor qubits has greatly diminished
the number of decohering defects, thus decreasing the devastating low-frequency 1/f noise …
the number of decohering defects, thus decreasing the devastating low-frequency 1/f noise …
CMOS compatibility of semiconductor spin qubits
Several domains of society will be disrupted once millions of high-quality qubits can be
brought together to perform fault-tolerant quantum computing (FTQC). All quantum …
brought together to perform fault-tolerant quantum computing (FTQC). All quantum …
[HTML][HTML] Surface passivation approaches for silicon, germanium, and III–V semiconductors
Semiconductors are key to our modern society, enabling a myriad of fields, including
electronics, photovoltaics, and photonics. The performance of semiconductor devices can be …
electronics, photovoltaics, and photonics. The performance of semiconductor devices can be …
Passive and active suppression of transduced noise in silicon spin qubits
Addressing and mitigating decoherence sources plays an essential role in the development
of a scalable quantum computing system, which requires low gate errors to be consistently …
of a scalable quantum computing system, which requires low gate errors to be consistently …
Modeling of planar germanium hole qubits in electric and magnetic fields
Hole-based spin qubits in strained planar germanium quantum wells have received
considerable attention due to their favorable properties and remarkable experimental …
considerable attention due to their favorable properties and remarkable experimental …
Characterization of individual charge fluctuators in Si/SiGe quantum dots
F Ye, A Ellaboudy, D Albrecht, R Vudatha… - Physical Review B, 2024 - APS
Electron spins in silicon quantum dots are excellent qubits due to their long coherence
times, scalability, and compatibility with advanced semiconductor technology. Although high …
times, scalability, and compatibility with advanced semiconductor technology. Although high …