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Superconducting quantum digital-to-analog conversion circuit and quantum voltage noise source device

A digital-to-analog conversion circuit, superconducting quantum technology, applied in the direction of analog/digital conversion, code conversion, electrical components, etc., can solve problems such as common-mode voltage error

Active Publication Date: 2021-09-17
NAT INST OF METROLOGY CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Based on this, it is necessary to provide a superconducting quantum digital-to-analog conversion circuit and a quantum voltage noise source device for the common-mode voltage error problem of the traditional superconducting quantum digital-to-analog conversion circuit

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  • Superconducting quantum digital-to-analog conversion circuit and quantum voltage noise source device
  • Superconducting quantum digital-to-analog conversion circuit and quantum voltage noise source device
  • Superconducting quantum digital-to-analog conversion circuit and quantum voltage noise source device

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Embodiment Construction

[0031] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0032]The serial numbers numbered for components in this document, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom",...

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Abstract

The application provides a superconducting quantum digital-to-analog conversion circuit and a quantum voltage noise source device. The first high-speed pulse signal and the second high-speed pulse signal are transmitted to the tail end along their corresponding microwave transmission line structures, and are combined when transmitted to the combining module. The first high-speed pulse signal and the second high-speed pulse signal of two sets of equal amplitude but opposite polarity cancel each other out, and then are absorbed by the terminal resistance module, which can solve the common-mode voltage error problem of the traditional superconducting quantum digital-to-analog conversion circuit. Therefore, the high-speed digital signals used do not have to be encoded less efficiently to avoid common-mode voltage error problems. Therefore, the superconducting quantum digital-to-analog conversion circuit not only solves the common-mode voltage problem, but also makes the arbitrary waveform synthesis system simple and can maintain the maximum synthesizable signal amplitude.

Description

technical field [0001] The application relates to the technical field of integrated superconducting Josephson junction circuit design, in particular to a superconducting quantum digital-to-analog conversion circuit and a quantum voltage noise source device. Background technique [0002] Based on the AC Josephson effect, a series of high-speed current pulse sequences are used to drive the Josephson junction array. When the amplitude of a single current pulse is within the quantum voltage step, the Josephson junction array will generate a corresponding time integral after being driven. The quantum voltage pulse whose area is always equal to h / 2e. This feature makes the Josephson junction a quantum pulse modulator, which can be used to quantize and filter the digital sequence with amplitude and phase jitter generated by a commercial digital signal generator, and generate a theoretically completely accurate quantized output digital sequence . On the other hand, the Josephson e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/86H03M1/06
CPCH03M1/0626H03M1/86
Inventor 钟源李劲劲钟青王雪深曹文会屈继峰周琨荔
Owner NAT INST OF METROLOGY CHINA
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