Rapid single flux quantum (original) (raw)

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在电子学领域中，快速单通量量子（英語：rapid single flux quantum，缩写RSFQ；也称快单磁通量子）是一种使用超导设备的數碼产品，也称约瑟夫森结, 用来处理数字信号。在RSFQ逻辑中，信息以磁通量量子的形式存储，并以单通量量子（Single Flux Quantum，缩写SFQ）电压脉冲的形式传递。RSFQ是的一个家族。其他家族包括Reciprocal Quantum Logic (RQL)、ERSFQ——不使用偏置电阻等元件的节能RSFQ版本。约瑟夫效应是RSFQ电子的有源元件，就像晶体管是半导体电子中的有源元件一样。RSFQ是一种经典数学而非量子计算机技术。 RSFQ与普通计算机使用的CMOS晶体管技术有很大差异： * 超导设备需要低温。 * 约瑟夫森结产生的皮秒级SFQ电压脉冲被用于编码、处理和传输数字信息，这代替半导体电子器件中晶体管产生的电压电平。 * SFQ电压脉冲在超导传输线上的行程非常小，并且如果脉冲的频谱分量不超过超导体能隙的频率，通常可以忽略不计。 * 在1 ps的SFQ脉冲情况下，电路计时可能达到100 GHz频率（每10皮秒一次脉冲）。

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dbo:abstract In electronics, rapid single flux quantum (RSFQ) is a digital electronic device that uses superconducting devices, namely Josephson junctions, to process digital signals. In RSFQ logic, information is stored in the form of magnetic flux quanta and transferred in the form of Single Flux Quantum (SFQ) voltage pulses. RSFQ is one family of superconducting or SFQ logic. Others include Reciprocal Quantum Logic (RQL), ERSFQ – energy-efficient RSFQ version that does not use bias resistors, etc. Josephson junctions are the active elements for RSFQ electronics, just as transistors are the active elements for semiconductor electronics. RSFQ is a classical digital, not quantum computing, technology. RSFQ is very different from the CMOS transistor technology used in conventional computers: * Superconducting devices require cryogenic temperatures. * picosecond-duration SFQ voltage pulses produced by Josephson junctions are used to encode, process, and transport digital information instead of the voltage levels produced by transistors in semiconductor electronics. * SFQ voltage pulses travel on superconducting transmission lines which have very small, and usually negligible, dispersion if no spectral component if the pulse is above the frequency of the energy gap of the superconductor. * In the case of SFQ pulses of 1 ps, it is possible to clock the circuits at frequencies of the order of 100 GHz (one pulse every 10 picoseconds). An SFQ pulse is produced when magnetic flux through a superconducting loop containing a Josephson junction changes by one flux quantum, Φ0 as a result of the junction switching. SFQ pulses have a quantized area ʃV(t)dt = Φ0 ≈ 2.07×10−15 Wb = 2.07 mV⋅ps = 2.07 mA⋅pH due to magnetic flux quantization, a fundamental property of superconductors. Depending on the parameters of the Josephson junctions, the pulses can be as narrow as 1 ps with an amplitude of about 2 mV, or broader (e.g., 5–10 ps) with correspondingly lower amplitude. The typical value of the pulse amplitude is approximately 2IcRn, where IcRn is the product of the junction critical current, Ic, and the junction damping resistor, Rn. For Nb-based junction technology IcRn is on the order of 1 mV. (en) Бы́страя одноква́нтовая ло́гика (БОК-логика, англ. Rapid Single Flux Quantum, RSFQ) — это технология создания электроники, основанная на квантовых эффектах (эффекте Джозефсона) в сверхпроводящих устройствах, один из вариантов сверхпроводящей логики. Джозефсоновские контакты играют в электронике на основе БОК-логики ту же роль, что и транзисторы в полупроводниковой. Тем не менее, БОК-логика не является технологией квантовых вычислений в обычном смысле. От полупроводниковой электроники её отличают следующие особенности: * требуются условия для сверхпроводимости * использует единичные кванты магнитного потока для представления цифровой информации * кванты магнитного потока, производимые джозефсоновскими контактами, переносятся пикосекундными импульсами по сверхпроводящим линиям (ru) 在电子学领域中，快速单通量量子（英語：rapid single flux quantum，缩写RSFQ；也称快单磁通量子）是一种使用超导设备的數碼产品，也称约瑟夫森结, 用来处理数字信号。在RSFQ逻辑中，信息以磁通量量子的形式存储，并以单通量量子（Single Flux Quantum，缩写SFQ）电压脉冲的形式传递。RSFQ是的一个家族。其他家族包括Reciprocal Quantum Logic (RQL)、ERSFQ——不使用偏置电阻等元件的节能RSFQ版本。约瑟夫效应是RSFQ电子的有源元件，就像晶体管是半导体电子中的有源元件一样。RSFQ是一种经典数学而非量子计算机技术。 RSFQ与普通计算机使用的CMOS晶体管技术有很大差异： * 超导设备需要低温。 * 约瑟夫森结产生的皮秒级SFQ电压脉冲被用于编码、处理和传输数字信息，这代替半导体电子器件中晶体管产生的电压电平。 * SFQ电压脉冲在超导传输线上的行程非常小，并且如果脉冲的频谱分量不超过超导体能隙的频率，通常可以忽略不计。 * 在1 ps的SFQ脉冲情况下，电路计时可能达到100 GHz频率（每10皮秒一次脉冲）。 (zh)
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rdfs:comment 在电子学领域中，快速单通量量子（英語：rapid single flux quantum，缩写RSFQ；也称快单磁通量子）是一种使用超导设备的數碼产品，也称约瑟夫森结, 用来处理数字信号。在RSFQ逻辑中，信息以磁通量量子的形式存储，并以单通量量子（Single Flux Quantum，缩写SFQ）电压脉冲的形式传递。RSFQ是的一个家族。其他家族包括Reciprocal Quantum Logic (RQL)、ERSFQ——不使用偏置电阻等元件的节能RSFQ版本。约瑟夫效应是RSFQ电子的有源元件，就像晶体管是半导体电子中的有源元件一样。RSFQ是一种经典数学而非量子计算机技术。 RSFQ与普通计算机使用的CMOS晶体管技术有很大差异： * 超导设备需要低温。 * 约瑟夫森结产生的皮秒级SFQ电压脉冲被用于编码、处理和传输数字信息，这代替半导体电子器件中晶体管产生的电压电平。 * SFQ电压脉冲在超导传输线上的行程非常小，并且如果脉冲的频谱分量不超过超导体能隙的频率，通常可以忽略不计。 * 在1 ps的SFQ脉冲情况下，电路计时可能达到100 GHz频率（每10皮秒一次脉冲）。 (zh) In electronics, rapid single flux quantum (RSFQ) is a digital electronic device that uses superconducting devices, namely Josephson junctions, to process digital signals. In RSFQ logic, information is stored in the form of magnetic flux quanta and transferred in the form of Single Flux Quantum (SFQ) voltage pulses. RSFQ is one family of superconducting or SFQ logic. Others include Reciprocal Quantum Logic (RQL), ERSFQ – energy-efficient RSFQ version that does not use bias resistors, etc. Josephson junctions are the active elements for RSFQ electronics, just as transistors are the active elements for semiconductor electronics. RSFQ is a classical digital, not quantum computing, technology. (en) Бы́страя одноква́нтовая ло́гика (БОК-логика, англ. Rapid Single Flux Quantum, RSFQ) — это технология создания электроники, основанная на квантовых эффектах (эффекте Джозефсона) в сверхпроводящих устройствах, один из вариантов сверхпроводящей логики. Джозефсоновские контакты играют в электронике на основе БОК-логики ту же роль, что и транзисторы в полупроводниковой. Тем не менее, БОК-логика не является технологией квантовых вычислений в обычном смысле. От полупроводниковой электроники её отличают следующие особенности: (ru)
rdfs:label Rapid single flux quantum (en) Быстрая одноквантовая логика (ru) 快速单通量量子 (zh)
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