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関連する概念動画

Long-Term Memory01:18

Long-Term Memory

Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Sensory Memory01:14

Sensory Memory

Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
Long-term Potentiation01:35

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Long-term Potentiation01:25

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when presynaptic neurons...
Measurement: Standard Units03:38

Measurement: Standard Units

Every measurement provides three kinds of information: the size or magnitude of the measurement (a number), a standard of comparison for the measurement (a unit), and an indication of the uncertainty of the measurement. While the number and unit are explicitly represented when a quantity is written, the uncertainty is an aspect of the errors in the measurement results.
Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...

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Updated: May 21, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

室温量子ビットメモリが1秒を超える場合

P C Maurer1, G Kucsko, C Latta

  • 1Department of Physics, Harvard University, Cambridge, MA 02138, USA.

Science (New York, N.Y.)
|June 9, 2012
PubMed
まとめ
この要約は機械生成です。

研究者らは,ダイヤモンドの結晶を使って,堅固な固体量子ビットを開発した. この量子ビットは数分間の間,極化を保ち,室温で1秒以上のコヒーレンス寿命を持ち,量子情報アプリケーションを可能にします.

さらに関連する動画

Quasi-light Storage for Optical Data Packets
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Quasi-light Storage for Optical Data Packets

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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

関連する実験動画

Last Updated: May 21, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

科学分野:

  • 量子情報科学とは,量子情報科学である.
  • 固体物理 固体物理学
  • マテリアルサイエンス 材料科学

背景:

  • 安定した量子ビット (量子ビット) は,量子コンピューティングと情報保存に不可欠です.
  • 既存の量子ビット技術は,実用的なアプリケーションのための一貫性とスケーラビリティを維持する上で課題に直面しています.
  • 室温での動作と長いコヒーレンス時間は,広範囲にわたる量子ビット統合のために非常に望ましいものです.

研究 の 目的:

  • 新しい固体量子ビットの高精度制御を実証するために.
  • 長い量子ビットメモリ時間と,室温でコヒーレンス寿命を達成するために.
  • 量子情報科学の応用のためのこの量子ビットシステムの可能性を調査する.

主な方法:

  • 同位体浄化ダイヤモンドの窒素空白センターの近くにある単一の炭素13核スピンを用いて量子ビットの製造.
  • 核スピンを環境の騒音から隔離するために,消散的な解離技術を実装する.
  • キュービット・ポラライゼーションの保存とコヒーレンス・ライフタイム測定の実験的検証.

主要な成果:

  • 固体量子ビットに対する高精度制御が実証されました.
  • 室温で数分間ポラライゼーション保存を達成しました.
  • 測定されたコヒーレンス寿命は,室温で1秒を超える.
  • キュービットシステムは,堅牢性とスケーラビリティの可能性を示しています.

結論:

  • 開発された固体量子ビットは,室温で前例のない安定性と長いコヒーレンス時間を提供します.
  • ディシパティブデコップリングの使用は,量子ビットメモリを拡張するのに有効です.
  • この堅牢でスケーラブルな量子ビットプラットフォームは,量子情報科学と技術の進歩に大きく貢献します.