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Coupling surface acoustic wave resonators to josephson ring modulator

A surface acoustic wave and resonator technology, applied in the field of coupling surface acoustic wave resonators to Josephson ring modulators, can solve problems such as low participation rate, limited device usability and practicability, narrow dynamic bandwidth, etc.

Pending Publication Date: 2021-03-16
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can result in a very low participation rate, which in turn requires the resonator to have a very high external quality factor (Qs) for its operation
However, it is undesirable for a resonator to have a high external Qs, as it may induce a very narrow dynamic bandwidth, severely limiting the usability and practicality of the device
[0002] Also, coupling the JRM to a low frequency lumped element resonator may require the use of large lumped capacitors and large lumped inductance
It is difficult to achieve large lumped capacitance and inductance in practice
Large capacitances can have considerable losses (lowering the device's internal Q), and thus can cause a significant portion of the quantum signal to be lost
Large geometric inductance is usually limited by parasitic capacitance

Method used

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  • Coupling surface acoustic wave resonators to josephson ring modulator
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  • Coupling surface acoustic wave resonators to josephson ring modulator

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Embodiment Construction

[0021] The following detailed description is merely illustrative and is not intended to limit the embodiments of the invention and / or their applications or applications. In addition, it is not intended to be constrained by any aspects or implied information given in the foregoing background techniques or in the present sections or in the specific embodiments.

[0022] One or more embodiments of the present invention will now be described with reference to the accompanying drawings, and the same reference numerals are used to refer to the same elements. In the following description, many of the specific details are set forth in the following description, and many specific details are set forth to provide a more thorough understanding of the embodiments of the present invention. However, it will be apparent that the embodiments may be practiced without these specific details in different situations.

[0023] Due to the circuit, and more particularly to the quantum circuit, if a JR...

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Abstract

A superconducting device that mixes surface acoustic waves and techniques for fabricating the same are provided. The superconducting device can comprise a first surface acoustic wave resonator comprising a first low-loss piezo-electric dielectric substrate. The superconducting device can also comprise a second surface acoustic wave resonator comprising a second low-loss piezo-electric dielectric substrate. Further, the superconducting device can comprise a Josephson ring modulator coupled to the first surface acoustic wave resonator and the second surface acoustic wave resonator. The Josephsonring modulator is a dispersive nonlinear three-wave mixing element.

Description

Background technique [0001] In the quantum circuit, Josephson Ring Modulator (JRM) is coupled to two superconducting microwave resonators, and the differential model supported by these two superconducting microwave resonators and fits to JRM non-resonant public driving Three-way mixing is performed. Since JRM is coupled to these two superconducting microwave resonators, the device is restricted in the selection of the frequency of differential modes, which may cause one or more issues. For example, JRM is coupled to a low frequency transmission line resonator may have different problems, such as occupying large areas (eg, large area). Another problem is that the linear inductance associated with the low resonant frequency transmission line is relatively large compared to the inductance of JRM. This can lead to very low participation rates, which in turn requires the resonator to have a very high external quality factor (QS) for its operation. However, it is not desirable that the ...

Claims

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Application Information

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IPC IPC(8): H03D7/00G06N10/00H03F19/00H03H1/00H03H9/64
CPCH03D7/005H03F19/00G06N10/00H01F6/06H03H9/02551H03H9/02559H03H9/02566H03H9/02685H03H9/25H03H9/72H10N60/12H10N60/805H10N60/0912
Inventor B·阿布多
Owner IBM CORP