scholarly journals Coupling a single electron on superfluid helium to a superconducting resonator

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Gerwin Koolstra ◽  
Ge Yang ◽  
David I. Schuster
Keyword(s):  
Quantum Electrodynamics ◽  
Coherent Control ◽  
Single Electron ◽  
Strong Interactions ◽  
Dimensional System ◽  
Trapped Electrons ◽  
Electrons On Helium ◽  
Single Electrons ◽  
Microwave Regime ◽  
Electron Photon

AbstractElectrons on helium form a unique two-dimensional system on the interface of liquid helium and vacuum. A small number of trapped electrons on helium exhibits strong interactions in the absence of disorder, and can be used as a qubit. Trapped electrons typically have orbital frequencies in the microwave regime and can therefore be integrated with circuit quantum electrodynamics (cQED), which studies light–matter interactions using microwave photons. Here, we experimentally realize a cQED platform with the orbitals of single electrons on helium. We deterministically trap one to four electrons in a dot integrated with a microwave resonator, allowing us to study the electrons’ response to microwaves. Furthermore, we find a single-electron-photon coupling strength of $$g/2\pi =4.8\pm 0.3$$g∕2π=4.8±0.3 MHz, greatly exceeding the resonator linewidth $$\kappa /2\pi =0.5$$κ∕2π=0.5 MHz. These results pave the way towards microwave studies of Wigner molecules and coherent control of the orbital and spin state of a single electron on helium.

scholarly journals Single electron-photon pair creation from a single polarization-entangled photon pair

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kazuyuki Kuroyama ◽  
Marcus Larsson ◽  
Sadashige Matsuo ◽  
Takafumi Fujita ◽  
Sascha R. Valentin ◽  
...  
Keyword(s):  
Pair Creation ◽  
Single Electron ◽  
Photon Pair ◽  
Single Polarization ◽  
Electron Photon

Electroweak Interactions and W, Z Boson Properties

2020 ◽  
Author(s):  
Maarten Boonekamp ◽  
Matthias Schott
Keyword(s):  
Standard Model ◽  
Weak Interaction ◽  
Top Quark ◽  
Quantum Electrodynamics ◽  
Weak Interactions ◽  
Higgs Field ◽  
Nuclear Research ◽  
Strong Interactions ◽  
Weak Boson ◽  
The Standard Model

With the huge success of quantum electrodynamics (QED) to describe electromagnetic interactions in nature, several attempts have been made to extend the concept of gauge theories to the other known fundamental interactions. It was realized in the late 1960s that electromagnetic and weak interactions can be described by a single unified gauge theory. In addition to the photon, the single mediator of the electromagnetic interaction, this theory predicted new, heavy particles responsible for the weak interaction, namely the W and the Z bosons. A scalar field, the Higgs field, was introduced to generate their mass. The discovery of the mediators of the weak interaction in 1983, at the European Center for Nuclear Research (CERN), marked a breakthrough in fundamental physics and opened the door to more precise tests of the Standard Model. Subsequent measurements of the weak boson properties allowed the mass of the top quark and of the Higgs Boson to be predicted before their discovery. Nowadays, these measurements are used to further probe the consistency of the Standard Model, and to place constrains on theories attempting to answer still open questions in physics, such as the presence of dark matter in the universe or unification of the electroweak and strong interactions with gravity.

Detecting electrons on helium with a single-electron transistor (SET)

2003 ◽  
Vol 18 (1-3) ◽  
pp. 179-181 ◽  
Author(s):  
G Papageorgiou ◽  
Yu Mukharsky ◽  
K Harrabi ◽  
P Glasson ◽  
P Fozooni ◽  
...  
Keyword(s):  
Single Electron ◽  
Single Electron Transistor ◽  
Electrons On Helium

scholarly journals Schemes for Single Electron Transistor Based on Double Quantum Dot Islands Utilizing a Graphene Nanoscroll, Carbon Nanotube and Fullerene

Molecules ◽  
2022 ◽  
Vol 27 (1) ◽  
pp. 301
Author(s):  
Vahideh Khademhosseini ◽  
Daryoosh Dideban ◽  
Mohammad Taghi Ahmadi ◽  
Hadi Heidari
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Single Electron ◽  
Double Quantum ◽  
Single Electron Transistor ◽  
Multiple Quantum ◽  
Single Electrons ◽  
Stability Diagrams ◽  
Zero Current ◽  
Charge Stability

The single electron transistor (SET) is a nanoscale switching device with a simple equivalent circuit. It can work very fast as it is based on the tunneling of single electrons. Its nanostructure contains a quantum dot island whose material impacts on the device operation. Carbon allotropes such as fullerene (C60), carbon nanotubes (CNTs) and graphene nanoscrolls (GNSs) can be utilized as the quantum dot island in SETs. In this study, multiple quantum dot islands such as GNS-CNT and GNS-C60 are utilized in SET devices. The currents of two counterpart devices are modeled and analyzed. The impacts of important parameters such as temperature and applied gate voltage on the current of two SETs are investigated using proposed mathematical models. Moreover, the impacts of CNT length, fullerene diameter, GNS length, and GNS spiral length and number of turns on the SET’s current are explored. Additionally, the Coulomb blockade ranges (CB) of the two SETs are compared. The results reveal that the GNS-CNT SET has a lower Coulomb blockade range and a higher current than the GNS-C60 SET. Their charge stability diagrams indicate that the GNS-CNT SET has smaller Coulomb diamond areas, zero-current regions, and zero-conductance regions than the GNS-C60 SET.

scholarly journals Single Particle Detection System for Strong-Field QED Experiments

2021 ◽  
Author(s):  
Felipe Cezar Salgado ◽  
Niall Cavanagh ◽  
Matteo Tamburini ◽  
Doug Wesley Storey ◽  
Roland Beyer ◽  
...  
Keyword(s):  
Single Particle ◽  
Quantum Electrodynamics ◽  
Strong Field ◽  
Detection System ◽  
Signal To Noise Ratio ◽  
Background Level ◽  
Intense Laser ◽  
Particle Detection ◽  
Single Electrons ◽  
Single Particle Detection

Abstract Measuring signatures of strong-field quantum electrodynamics (SF-QED) processes in an intense laser field is an experimental challenge: it requires detectors to be highly sensitive to single electrons and positrons in the presence of the typically very strong x-ray and γ-photon background levels. In this paper, we describe a particle detector capable of diagnosing single leptons from SF-QED interactions and discuss the background level simulations for the upcoming Experiment-320 at FACET-II (SLAC National Accelerator Laboratory). The single particle detection system described here combines pixelated scintillation LYSO screens and a Cherenkov calorimeter. We detail the performance of the system using simulations and a calibration of the Cherenkov detector at the ELBE accelerator. Single 3 GeV leptons are expected to produce approximately 537 detectable photons in a single calorimeter channel. This signal is compared to Monte-Carlo simulations of the experiment. A signal-to-noise ratio of 18 in a single Cherenkov calorimeter detector is expected and a spectral resolution of 2% is achieved using the pixelated LYSO screens.

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