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Multi-path interferometric josephson isolator based on nondegenerate three-wave mixing josephson devices

A mixer and isolator technology, applied in waveguide devices, superconducting devices, demodulation of modulated electromagnetic waves, etc.

Active Publication Date: 2020-05-29
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clearly, currently available isolators and circulators are not conducive to fabrication on semiconductor chips

Method used

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  • Multi-path interferometric josephson isolator based on nondegenerate three-wave mixing josephson devices
  • Multi-path interferometric josephson isolator based on nondegenerate three-wave mixing josephson devices
  • Multi-path interferometric josephson isolator based on nondegenerate three-wave mixing josephson devices

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Embodiment Construction

[0054] The exemplary embodiments used to describe the present invention generally address and address the aforementioned need for a multipath interference Josephson isolator based on a non-degenerate three-wave mixing Josephson device. Multipath interference Josephson isolators based on non-degenerate three-wave mixing Josephson devices are hereinafter succinctly and interchangeably referred to as multipath interference Josephson isolators (MPIJIS).

[0055] MPIJIS 1) can be integrated on a chip or on a printed circuit board (PCB), 2) does not use ferrites, 3) does not require strong magnets, 4) can thermalize well, 5) can be made small / compact, and 6 ) are lighter in weight than currently available isolators. Furthermore, commercial isolators always operate in a single direction fixed for the isolator to control flow. In contrast, the direction of isolation in MPIJIS can be reversed in situ by eliminating the phase difference between the two pump tones driving the devices de...

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Abstract

A microwave isolator device includes two nondegenerate microwave mixer devices, each mixer configured to receive a microwave input of an input frequency via a first port and to generate an idler signal of an idler frequency at a second port. The second ports of both mixers are coupled together. A first input / output port is coupled to the first ports of the two mixers, and a second I / O port is alsocoupled to the first ports of the two mixers. A microwave signal(signal) communicated between the first I / O port and the second I / O port is transmitted while propagating in a first direction betweenthe first I / O port to the second I / O port through the first mixer and the second mixer and to be blocked while propagating in a second direction between the second I / O port to the first I / O through the first mixer and the second mixer.

Description

technical field [0001] The present invention generally relates to a device, fabrication method, and fabrication system for a microwave optical isolator usable with superconducting qubits in quantum computing. More specifically, the present invention relates to devices, methods and systems for multipath interference Josephson isolators based on non-degenerate three-wave mixing Josephson devices. Background technique [0002] Hereinafter, the "Q" prefix in phrase words indicates references to that word or phrase in the context of quantum computing, unless clearly distinguished when used. [0003] Molecules and subatomic particles obey the laws of quantum mechanics, the branch of physics that explores how the physical world works at the most fundamental level. At this level, particles behave in strange ways, assume more than one state at the same time, and interact with other particles very far away. Quantum computing exploits these quantum phenomena to process information. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P3/08H10N60/01H10N60/80
CPCH03D7/005G06N10/00B82Y10/00H03D2009/0691H01P3/08H01P5/18H01P11/007H10N60/805H10N60/0912
Inventor B.阿卜杜
Owner IBM CORP