Characterizing and Mitigating Timing Noise-Induced Decoherence in Single Electron Sources

• DOI: 10.1103/PhysRevB.109.165306
• ArXiv number: 2310.03728

Identifying and controlling decoherence in single-electron sources (SESs) is important for their applications in quantum information processing. The recent experiments with ultrashort electron pulses [J. D. Fletcher et al., Nat. Commun. 10, 5298 (2019)] demonstrate strong decoherence that cannot be caused by traditional mechanisms such as electron-electron or electron-phonon interactions. Here we propose timing noise as a universal model, consistent with existing experimental data, to explain strong decoherence of ultrafast SES pulses, without resorting to any specific microscopic mechanism for such decoherence. We also propose a protocol to filter out timing noise which works even in the presence of other decoherence effects, such as those present in, e.g., low-energy SESs.

• Article complet

Additional files

Related research projects

i-LINKB20072

Quantum fluctuations and dissipation: towards highly efficient and precise nano engines

I.P.: Rosa Lopez

The goal of this project is to investigate novel ways to design heat engines or refrigerators at the nanoscale.

MACTOPE

MATERIA CUANTICA TOPOLÓGICA: PRECISIÓN Y ENERGÍA

I.P.: Rosa Lopez

In the last two decades we have witnessed an unprecedented revolution with the progress of new technologies based on the properties of so-called quantum matter. Examples are quantum computing that uses quantum …

QuTTNAQMa

TRANSPORTE CUANTICO Y TERMODINAMICA: NUEVAS AVENIDAS EN MATERIALES CUANTICOS

I.P.: Rosa Lopez, Llorenç Serra

The aim of this project is to investigate the heat and energy transport properties in nanoconductors considering complex phenomena due to either many-body interactions and/or the presence of quantum materials.