CCD Long-Time Delay Line.

Kosonocky, Walter F.; Sauer, Donald J.

doi:10.21236/ada063800

Cited by 1 publication

(4 citation statements)

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“…Finally, our desire to make SEDCs implies that the biases can only be capacitively coupled and therefore the biasing is much like that in a conventional charge-coupled device ͑CCD͒. 25 ͑D͒ Screening length control: To produce successful Coulomb-blockade-based network designs of useful size and sophistication a key element is careful control of the ratio between the screening length and the minimum spacing between electrons. The screening length, i.e., the size of the polarization cloud surrounding a test charge, is determined by the capacitances of the circuit and so these must be chosen properly.…”

Section: Sedc Design Principlesmentioning

confidence: 99%

“…According to design principle ͑E͒, we would like to use a CCD-like charge transfer mechanism 25 to handle the input/ output from SEDCs. Understanding how this can be accomplished provides a simplest illustration of many of the other design principles as well.…”

Section: A Ccd-like Charge Transfermentioning

confidence: 99%

“…In other words, we wish to produce a single-electron CCD ͑SECCD͒. 25,30,31 It should be noted that a turnstile version of the SECCD has appeared in Ref. 15.…”

Section: A Ccd-like Charge Transfermentioning

confidence: 99%

“…The period of the phasing determines a ''pixel'' or cell size and, as with conventional ͑symmetric͒ CCDs, error-free transfer requires at least three phases. 25 Therefore, the minimum pixel size and the minimum spacing between electrons ͑in 1D͒ is three Coulomb islands. This is the case depicted in Fig.…”

Section: A Ccd-like Charge Transfermentioning

confidence: 99%

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Design of computationally useful single-electron digital circuits

Ancona

1996

Journal of Applied Physics

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We formulate and discuss principles for designing computationally useful networks of Coulomb-blockade devices. Our particular focus is on locally interconnected synchronous networks in which the numerical discreteness of a computation is represented directly by the quantization of electron charge, i.e., electrons represent bits. To highlight our emphasis on circuits and architectural issues, and on performing locally interconnected computation rather than traditional logic as has been the interest heretofore (single-electron logic), we refer to our networks as single-electron digital circuits (SEDCs). In addition to being single-electron and locally interconnected, the SEDCs we propose have a regular ‘‘cellular’’ structure with occupancy-independent biasings and with electron-electron interactions carefully controlled. The chief virtue of SEDCs is their scalability, both as devices (because of their Coulomb blockade basis) and as circuits (because of their local interconnectivity), perhaps even to molecular dimensions. We illustrate our approach with a number of new ‘‘device’’ and network designs based on electron-pump-like structures and mostly directed at performing lattice-gas simulation. For this application we effectively create an electron gas within a SEDC which precisely mimics the lattice gas. Finally, we have validated our designs using numerical simulation and expect that at least some of them should be realizable in current technology. However, their promise of enormous levels of integration and performance should be tempered with a clear awareness of the many obstacles associated with fabrication and economics which must be overcome if they are ever to be the foundation for a practical computer technology.

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Section: Sedc Design Principlesmentioning

confidence: 99%

Section: A Ccd-like Charge Transfermentioning

confidence: 99%

“…In other words, we wish to produce a single-electron CCD ͑SECCD͒. 25,30,31 It should be noted that a turnstile version of the SECCD has appeared in Ref. 15.…”

Section: A Ccd-like Charge Transfermentioning

confidence: 99%

Section: A Ccd-like Charge Transfermentioning

confidence: 99%

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