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関連する概念動画

Non-gated Ion Channels01:24

Non-gated Ion Channels

8.1K
Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
8.1K
Ligand-gated Ion Channels01:19

Ligand-gated Ion Channels

14.0K
Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
Three Subfamilies of Ligand-gated Ion Channels
Ligand-gated ion channels fall into three subfamilies. The 'Cys-loop' includes the nicotinic acetylcholine receptors, γ-aminobutyric acid (GABA), glycine, and 5-hydroxytryptamine receptors. The second one is the 'Pore-loop' channels that...
14.0K
Voltage-gated Ion Channels01:26

Voltage-gated Ion Channels

10.6K
Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...
10.6K
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

7.6K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
7.6K
Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

3.9K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
3.9K
G-Protein Gated Ion Channels01:21

G-Protein Gated Ion Channels

5.6K
GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
5.6K

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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

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量子ゲート・テレポーテーション 離散量子ビット間のトラップイオンプロセッサ

Yong Wan1,2, Daniel Kienzler3,2, Stephen D Erickson3,2

  • 1National Institute of Standards and Technology, Boulder, CO 80305, USA. yong.wan@nist.gov.

Science (New York, N.Y.)
|June 1, 2019
PubMed
まとめ
この要約は機械生成です。

量子ゲート・テレポーテーション (QGT) は,量子コンピュータのスケーリングに不可欠な遠隔量子ビット操作を可能にします. この研究は,イオントラップの制御NOTゲートでQGTを証明し,高精度を達成しました.

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Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
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Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

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関連する実験動画

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科学分野:

  • 量子コンピューティング
  • 量子情報科学
  • 原子物理学

背景:

  • 大規模な量子コンピュータは 遠く離れた量子ビット間の 量子ゲート操作を必要とします
  • 量子ゲート・テレポーテーション (QGT) は 局所操作,古典的な通信,そして絡み合いを用いて 解決策を提供する.

研究 の 目的:

  • 拡張可能なイオントラップアーキテクチャで量子ゲートテレポーテーション (QGT) を実証する.
  • 空間的に分離された量子ビット間の制御NOT (CNOT) ゲートをテレポートする.

主な方法:

  • トラップ内の量子ビットの移動に イオンシャトルを使用した.
  • 単位と二位のゲート (同一種と混合種) を個別に取り扱った.
  • リアルタイム・コンディショナル・オペレーションと シングル・キビット・デテックスを採用した.

主要な成果:

  • 分離された量子ビット間のCNOTゲートの決定的QGTを成功裏に実証しました.
  • 95%の信頼性で (0.845,0.872) の範囲でテレポートされたCNOTゲートのためのエンタグリングフィデリティを達成しました.
  • 量子コンピュータのスケーリングに不可欠なツールです

結論:

  • このQGTはスケーラブルなイオントラップ量子コンピュータを 構築するための重要なステップです
  • この研究は 将来の量子プロセッサの 技術の組み合わせを検証するものです