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The implementation of a quantum computer requires a qubit-specific measurement capability to read-out the final state of a quantum system. The model of spin dependent tunneling followed by charge readout has been highly successful in…

Mesoscale and Nanoscale Physics · Physics 2015-04-07 M. F. Gonzalez-Zalba , A. J. Ferguson , S. Barraud , A. C. Betz

We report a detailed study of low-temperature (mK) transport properties of a silicon double-dot system fabricated by phosphorous ion implantation. The device under study consists of two phosphorous nanoscale islands doped to above the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. Mitic , K. D. Petersson , M. C. Cassidy , R. P. Starrett , E. Gauja , A. J. Ferguson , C. Yang , D. N. Jamieson , R. G. Clark , A. S. Dzurak

Single electron charging in an individual InAs quantum dot was observed by electrostatic force measurements with an atomic force microscope (AFM). The resonant frequency shift and the dissipated energy of an oscillating AFM cantilever were…

Presented in this paper is a proof-of-concept for a new approach to single electron pumping based on a Single Atom Transistor (SAT). By charge pumping electrons through an isolated dopant atom in silicon, precise currents of up to 160 pA at…

Mesoscale and Nanoscale Physics · Physics 2014-06-19 G. C. Tettamanzi , R. Wacquez , S. Rogge

In the development of the first generation of sensors and memory chips based on spin-dependent tunneling through a thin trilayer, it has become clear that pinhole defects can have a deleterious effect on magnetoresistance. However, current…

Condensed Matter · Physics 2009-11-10 Zhongsheng Zhang , David A. Rabson

Single electron transistors (SETs) fabricated from single-walled carbon nanotubes (SWNTs) can be operated as highly sensitive charge detectors reaching sensitivity levels comparable to metallic radio frequency SETs (rf-SETs). Here we…

Mesoscale and Nanoscale Physics · Physics 2018-03-21 Pasi Häkkinen , Andreas Isacsson , Alexander Savin , Jaakko Sulkko , Pertti Hakonen

We have realized a hybrid solid-state quantum device in which a single-electron semiconductor double quantum dot is dipole coupled to a superconducting microwave frequency transmission line resonator. The dipolar interaction between the two…

We measure the nonlinearity of a telecom-wavelength superconducting nanowire single-photon detector via incoherent beam combination. At typical photon count rates and detector bias current, the observed relative deviation from a perfectly…

Quantum Physics · Physics 2024-11-19 Patrick Mark , Sebastian Gstir , Julian Münzberg , Gregor Weihs , Robert Keil

To test the quality of a tunnel junction, one sometimes fits the bias-dependent differential conductance to a theoretical model, such as Simmons's formula. Recent experimental work by {\AA}kerman and collaborators, however, has demonstrated…

Condensed Matter · Physics 2009-11-10 Zhongsheng Zhang , David A. Rabson

The search for charged particle tracks in detectors with linear sensing elements, such as wire chambers, strip silicon detectors etc., starts with identification of straight track segments. The latter are deduced by constructing all…

Instrumentation and Detectors · Physics 2019-12-02 Alexander Belyaev , Sergey Avramenko , Geydar Agakishiev , Vladimir Pechenov , Viktor Rikhvitsky

A comprehensive review is presented of single molecule junction conductance measurements across families of molecules measured while breaking a gold point contact in a solution of molecules with amine end groups. A theoretical framework…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Mark S. Hybertsen , Latha Venkataraman , Jennifer E. Klare , Adam C. Whalley , Michael L. Steigerwald , Colin Nuckolls

Detecting individual light quanta is essential for quantum information, space exploration, advanced machine vision, and fundamental science. Here, we introduce a novel single photon detection mechanism using highly photosensitive…

Since the discovery of electrons, an accurate detection of electrical charges has been the dream of scientific community. Due to some remarkable advantages, micro/nano-electromechanical systems (M/NEMS) based resonators have been used to…

Mesoscale and Nanoscale Physics · Physics 2019-07-22 Xuefeng Wang , Dong Pu , Ronghua Huan , Xueyong Wei , Weiqiu Zhu

Real-time detection of single electron tunneling through a T-shaped double quantum dot is simulated, based on a Monte Carlo scheme. The double dot is embedded in a dissipative environment and the presence of electrons on the double dot is…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 JunYan Luo , Shi-Kuan Wang , Xiao-Ling He , Xin-Qi Li , YiJing Yan

Superconducting nanowire single-photon detectors have emerged as a promising technology for quantum metrology from the mid-infrared to ultra-violet frequencies. Despite the recent experimental successes, a predictive model to describe the…

Instrumentation and Detectors · Physics 2020-06-01 Saman Jahani , Li-Ping Yang , Adrian Buganza Tepole , Joseph C. Bardin , Hong X. Tang , Zubin Jacob

We demonstrate that individual electron-hole pairs are resolved in a 1 cm$^2$ by 4 mm thick silicon crystal (0.93 g) operated at $\sim$35 mK. One side of the detector is patterned with two quasiparticle-trap-assisted…

We demonstrate electrical control of Si:P double dots in which the potential is defined by nanoscale phosphorus doped regions. Each dot contains approximately 600 phosphorus atoms and has a diameter close to 30 nm. On application of a…

Axions detection requires the ultimate sensitivity down to the single photon limit. In the microwave region this corresponds to energies in the yJ range. This extreme sensitivity has to be combined with an extremely low dark count rate,…

We predict a new electron pair-tunneling (PT) resonance in non-linear transport through quantum dots with positive charging energies exceeding the broadening due to thermal and quantum fluctuations. The PT resonance shows up in the…

Mesoscale and Nanoscale Physics · Physics 2013-01-10 M. Leijnse , M. R. Wegewijs , M. H. Hettler

We present an innovative charge detector with high resolution and wide dynamic range designed to fulfill the requirements of a monitoring system for a high energy ion beam. The detector prototype, constructed using Si photodiodes and a…