Suppression of low-frequency charge noise in superconducting resonators by surface spin desorption
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-03577-2
Abstract: Noise and decoherence due to spurious two-level systems located at material interfaces are long-standing issues for solid-state quantum devices. Efforts to mitigate the effects of two-level systems have been hampered by a lack of knowledge… read more here.
Keywords: charge noise; frequency; noise; superconducting resonators ... See more keywords
Charge-noise spectroscopy of Si/SiGe quantum dots via dynamically-decoupled exchange oscillations
Sign Up to like & getrecommendations! Published in 2022 at "Nature Communications"
DOI: 10.1038/s41467-022-28519-x
Abstract: Electron spins in silicon quantum dots are promising qubits due to their long coherence times, scalable fabrication, and potential for all-electrical control. However, charge noise in the host semiconductor presents a major obstacle to achieving… read more here.
Keywords: charge noise; spectroscopy; exchange oscillations; dynamically decoupled ... See more keywords
Low-frequency charge noise in Si/SiGe quantum dots
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.165305
Abstract: Electron spins in silicon have long coherence times and are a promising qubit platform. However, electric field noise in semiconductors poses a challenge for most single- and multi-qubit operations in quantum-dot spin qubits. Here, we… read more here.
Keywords: quantum dots; charge noise; noise; sige quantum ... See more keywords
Charge noise suppression in capacitively coupled singlet-triplet spin qubits under magnetic field
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.l161409
Abstract: Charge noise is the main hurdle preventing high-fidelity operation, in particular that of two-qubit gates, of semiconductor-quantum-dot-based spin qubits. While certain sweet spots where charge noise is substantially suppressed have been demonstrated in several types… read more here.
Keywords: charge noise; coupled singlet; magnetic field; singlet triplet ... See more keywords
Spin Lifetime and Charge Noise in Hot Silicon Quantum Dot Qubits.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.076801
Abstract: We investigate the magnetic field and temperature dependence of the single-electron spin lifetime in silicon quantum dots and find a lifetime of 2.8 ms at a temperature of 1.1 K. We develop a model based on spin-valley… read more here.
Keywords: charge noise; temperature; silicon quantum; silicon ... See more keywords
Charge-Noise-Induced Dephasing in Silicon Hole-Spin Qubits.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.247701
Abstract: We investigate, theoretically, charge-noise-induced spin dephasing of a hole confined in a quasi-two-dimensional silicon quantum dot. Central to our treatment is accounting for higher-order corrections to the Luttinger Hamiltonian. Using experimentally reported parameters, we find… read more here.
Keywords: charge noise; noise induced; hole spin; induced dephasing ... See more keywords
On the fluctuation-dissipation of the oxide trapped charge in a MOSFET operated down to deep cryogenic temperatures
Sign Up to like & getrecommendations! Published in 2022 at "Fluctuation and Noise Letters"
DOI: 10.1142/s0219477523500451
Abstract: An analysis of the oxide trapped charge noise in a MOSFET operated down to deep cryogenic temperatures is proposed. To this end, a revisited derivation of the interface trap conductance Gp and oxide trapped charge… read more here.
Keywords: charge noise; trapped charge; oxide trapped;