A switching function of a quantum dot surrounded by four tunnel junctions

2003 ◽  
Vol 86 (4) ◽  
pp. 10-17
Author(s):  
Katsuki Amemiya ◽  
Tsuyoshi Ueta
Keyword(s):  
Quantum Dot ◽  
Tunnel Junctions ◽  
Switching Function

Quantum-dot Cellular Automata

2001 ◽  
Vol 696 ◽  
Author(s):  
Gregory L. Snider ◽  
Alexei O. Orlov ◽  
Ravi K. Kummamuru ◽  
Rajagopal Ramasubramaniam ◽  
Islamshah Amlani ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cellular Automata ◽  
Quantum Dot ◽  
Low Temperatures ◽  
Tunnel Junctions ◽  
Operating Temperature ◽  
Building Blocks ◽  
Quantum Dot Cellular Automata ◽  
Background Charge ◽  
Metal Islands

AbstractAn overview is given of the quantum-dot cellular automata (QCA) architecture, along with a summary of experimental demonstrations of QCA devices. QCA is a transistorless computation paradigm that can provide a solution to such challenging issues as device and power density. The basic building blocks of the QCA architecture, such as AND, OR gates and clocked cells have been demonstrated and will be presented here. The quantum dots used in the experiments to date are metal islands that are coupled by capacitors and tunnel junctions, and devices operate only at very low temperatures. For QCA to be used in practical devices, the operating temperature must be raised, and issues such as background charge must be addressed. An introduction will be given to these issues and possible solutions.

TRIPLE-TUNNEL JUNCTION SINGLE ELECTRON TRANSISTOR (TTJ-SET)

2011 ◽  
Vol 25 (17) ◽  
pp. 1487-1501
Author(s):  
ALI SHAHHOSEINI ◽  
KAMYAR SAGHAFI ◽  
MOHAMMAD KAZEM MORAVVEJ-FARSHI ◽  
RAHIM FAEZ
Keyword(s):  
Monte Carlo ◽  
Quantum Dot ◽  
Excellent Agreement ◽  
Tunnel Junction ◽  
Tunnel Junctions ◽  
Single Electron ◽  
Single Electron Transistor ◽  
Macro Model ◽  
Half Wave

We propose a triple-tunnel junction single electron transistor (TTJ-SET). The proposed structure consists of a metallic quantum-dot island that is capacitive coupled to a gate contact and surrounded by three tunnel junctions. To the best of our knowledge, this is the first instance of introducing this new structure that is suitable for both digital and analog applications. I–V D characteristics of the proposed TTJ-SET, simulated by a HSPICE macro model for various gate voltages, are in excellent agreement with those obtained by SIMON, which is a Monte-Carlo based simulator. We show how one can design a digital inverter by using a single TTJ-SET. We also show that, under suitable conditions, a TTJ-SET can operate as a full- or half-wave analog rectifier.

Quantum-Dot Devices and Quantum-Dot Cellular Automata

1997 ◽  
Vol 07 (10) ◽  
pp. 2199-2218 ◽  
Author(s):  
Wolfgang Porod
Keyword(s):  
Quantum Dots ◽  
Cellular Automata ◽  
Quantum Dot ◽  
Tunnel Junctions ◽  
Boolean Logic ◽  
Quantum Dot Cellular Automata ◽  
Nonlinear Networks ◽  
Binary Information ◽  
Logic Functions ◽  
Theoretic Description

We discuss novel nanoelectronic architecture paradigms based on cells composed of coupled quantum-dots. Boolean logic functions may be implemented in specific arrays of cells representing binary information, the so-called Quantum-Dot Cellular Automata (QCA). Cells may also be viewed as carrying analog information and we outline a network-theoretic description of such Quantum-Dot Nonlinear Networks (Q-CNN). In addition, we discuss possible realizations of these structures in a variety of semiconductor systems (including GaAs/AlGaAs, Si/SiGe, and Si/SiO 2), rings of metallic tunnel junctions, and candidates for molecular implementations.

scholarly journals Nonlinear Fermi liquid transport through a quantum dot in asymmetric tunnel junctions

2021 ◽  
Vol 104 (23) ◽  
Author(s):  
Kazuhiko Tsutsumi ◽  
Yoshimichi Teratani ◽  
Rui Sakano ◽  
Akira Oguri
Keyword(s):  
Quantum Dot ◽  
Fermi Liquid ◽  
Tunnel Junctions ◽  
Liquid Transport

Spin-flip assisted tunneling through quantum dot based magnetic tunnel junctions

2011 ◽  
Vol 82 (1) ◽  
pp. 37-46 ◽  
Author(s):  
M. J. Ma ◽  
M. B. A. Jalil ◽  
S. G. Tan ◽  
D. E. Koh
Keyword(s):  
Quantum Dot ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Spin Flip ◽  
Assisted Tunneling

Application of information theory to switching function minimisation

1990 ◽  
Vol 137 (5) ◽  
pp. 389 ◽  
Author(s):  
A.M. Kabakçioḡlu ◽  
P.K. Varshney ◽  
C.R.P. Hartmann
Keyword(s):  
Information Theory ◽  
Switching Function

Tantalum superconducting tunnel junctions for photon counting detectors

2002 ◽  
Vol 12 (3) ◽  
pp. 145-148
Author(s):  
C. Jorel ◽  
P. Feautrier ◽  
J.-C. Villégier ◽  
A. Benoit
Keyword(s):  
Tunnel Junctions ◽  
Photon Counting ◽  
Superconducting Tunnel Junctions ◽  
Photon Counting Detectors
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