Results 211 to 220 of about 432 (251)
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Digital Logic Gate Using Quantum-Dot Cellular Automata
Science, 1999A functioning logic gate based on quantum-dot cellular automata is presented, where digital data are encoded in the positions of only two electrons. The logic gate consists of a cell, composed of four dots connected in a ring by tunnel junctions, and two single-dot electrometers. The device is operated by applying inputs to the gates of the cell.
, Amlani +5 more
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Restoring Divider Design for Quantum-Dot Cellular Automata
2011 11th IEEE International Conference on Nanotechnology, 2011A digit recurrent restoring binary divider design for quantum-dot cellular automata (QCA) is presented in detail. It is a conventional design that uses controlled full subtractor cell units to produce a relatively simple and efficient implementation.
Seong-Wan Kim, Earl E. Swartzlander
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Reversible Flip-Flops in Quantum-Dot Cellular Automata
International Journal of Theoretical Physics, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rad, Samaneh Kazemi +1 more
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Realization of quantum-dot cellular automata using semiconductor quantum dots
Superlattices and Microstructures, 2003We demonstrate that a quantum-dot cellular automata device can be fabricated using electron beam lithographically defined gates on GaAs/AlGaAs heterostructure materials, and that by tuning the four quantum dot (J. Phys. C: Solid State Phys. 21 (1988) L893) system polarization of one double dot can lead to polarization in the neighboring double dot ...
C.G Smith +8 more
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Characterizing Quantum-Dot Cellular Automata
2014We undertake an in-depth numerical study of quantum-dot cellular automata (QCA), a beyond-CMOS computing paradigm which represents bits as bistable charge distributions in cells consisting of quantum dots. Using semi-realistic but material-independent mod- elling, we characterize the building blocks of QCA circuits in as detailed and unbiased a manner ...
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High-speed metallic quantum-dot cellular automata
2003 Third IEEE Conference on Nanotechnology, 2003. IEEE-NANO 2003., 2004The computation approach known as quantum-dot cellular automata (QCA) is based on encoding binary information in the charge configuration of quantum-dot cells. This paradigm provides a possible route to transistor-less electronics at the nano-scale. QCA devices using single-electron switching in metal-dot cells have been fabricated. Here we examine the
null Mo Liu, C.S. Lent
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Kink-Solitons in Quantum-Dot Cellular Automata
Japanese Journal of Applied Physics, 2001We examine the propagation of electric polarization in quantum-dot cellular automata (QCA) as a kink-soliton. We solve the time-dependent Schrödinger equation numerically by the Hartree approximation and also by the exact method. By the Hartree approximation, we find that the shape of the kink-soliton can be fitted very well to a function of ...
Satoshi Nakagawa +2 more
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Quantum Dot Cellular Automata (QDCA)
2016For representation of binary information and performing computations on them, cells containing quantum dots at defined locations are used. Tunnel barriers separate the neighboring dots. Under the control of a back plane voltage , electrons can tunnel between dots. But intercell barriers strictly prevent tunneling of electrons across cells.
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Experimental demonstration of quantum-dot cellular automata
Semiconductor Science and Technology, 1998We present the experimental demonstration of a basic cell of quantum-dot cellular automata (QCA), a transistorless computation paradigm which addresses the issues of device density and interconnection. The device presented is a six-dot quantum-dot cellular system consisting of a four-dot QCA cell and two electrometer dots.
G L Snider +6 more
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Quantum-Dot Cellular Automata Design Guideline
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2006Quantum-dot Cellular Automata (QCA) is attracting a lot of attentions due to its extremely small feature sizes and ultra low power consumption. Up to now several designs using QCA technology have been proposed. However, we found not all of the designs function properly. Further, no general design guidelines have been proposed so far.
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