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Qubit leakage error reduction

A qubit, error technique, applied in a device for reducing qubit leakage error, the field of quantum computing systems

Pending Publication Date: 2022-01-07
IQM FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Leakage errors cannot be resolved with standard quantum error correction which only deals with errors on a computational basis

Method used

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Embodiment Construction

[0034] In the following description, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of example certain aspects in which the disclosure may be placed. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present disclosure. Therefore, the following detailed description should not be considered as limiting, since the scope of the present disclosure is defined by the appended claims.

[0035] For example, it should be understood that a disclosure pertaining to a described method also applies to a corresponding device or system configured to perform the method, and vice versa. For example, if specific method steps are described, a corresponding apparatus may include means for performing the described method steps, even if the means are not explicitly described or shown in the figures. On the other hand, for example, if a certain devic...

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Abstract

The invention provides a quantum computing system and device. According to one embodiment, a system includes: a qubit having a ground state and a plurality of excited states, where the plurality of excited states includes a lowest excited state, where an energy difference between the ground state and the lowest excited state corresponds to a first frequency, and an energy difference between the lowest excited state and another of the plurality of excited states corresponds to a second frequency; an energy dissipation structure configured to dissipate energy transferred to the energy dissipation structure; and a filter having a stop band and a pass band, where the filter is coupled to the qubit and the energy dissipation structure, and where the stop band includes a first frequency and the pass band includes a second frequency. An apparatus, a quantum computing system and a method are provided herein.

Description

technical field [0001] The present disclosure relates to quantum computing, and more particularly to apparatus for reducing qubit leakage errors, and to a quantum computing system. Background technique [0002] Quantum computing is based on the idea of ​​storing information in two-level quantum systems. However, many implementations of such qubits have more than two energy levels. In this case, qubits are formed from the two lowest energy levels, and excitation of higher energy levels should be prevented. The situation where any of these higher energy levels are in danger of being excited, ie, when their quantum states mix with those of the basis of the computation, is called a leaky error. This may occur, for example, because of gate operations of the application or system-environment interactions. Leakage errors cannot be resolved with standard quantum error correction which only deals with errors on a computational basis. Contents of the invention [0003] This Summ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N10/00
CPCG06N10/00H01L23/38H03H7/0115H03K19/00346H10N60/12
Inventor O·阿霍恩J·海因索李天一P·拉特恩梅基M·莫托宁J·伦科J·萨洛J··桑托斯J·图里
Owner IQM FINLAND OY
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