関連する実験動画
Updated: Feb 17, 2026

10:40
High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
8.0K
超伝導クビットの相互作用する光子との局所化のスペクトルシグネチャー
P Roushan1, C Neill2, J Tangpanitanon3
1Google Inc., Santa Barbara, CA, USA. pedramr@google.com dimitris.angelakis@gmail.com.
まとめ
研究者は量子相を研究するために超伝導量子ビットを用いた新しい多体スペクトロスコーピーの技術を開発しました. ホフスタッターの蝶のような複雑なエネルギースペクトルを捉え 熱状態から局所状態への移行を分析します
科学分野:
- 量子物理学
- 凝縮物質物理学
- 量子情報科学
背景:
- 量子化された固有エネルギーと波動関数は,量子多体システムの振る舞いを予測するのに不可欠です.
- 物質の量子相を理解するには 先進的なスペクトロスコーピーの技術が必要です
研究 の 目的:
- 相互作用する光子のエネルギーレベルを解明するための新しい多体スペクトロスコーピーの技術を実装する.
- ホフスタッターのバタフライのスペクトルで テクニックを比較する
- 乱れを導入し,エネルギーレベル統計を研究することによって,量子相移行を調査する.
主な方法:
- 9個の超伝導量子ビットの チェーンを使いました
- 相互作用する光子のエネルギーレベルを 解明する技術を実装した.
- 熱化から局所化への相変化を検知する障害を導入した.
主要な成果:
- ホフスタッターの蝶のエネルギースペクトルの 重要な特徴を成功裏に捉えました
- 熱化された状態から局所化された状態への移行時の観測されたエネルギーレベル統計.
- 量子相探査の能力を示した
結論:
- 開発された多体スペクトロスコピーは,物質の量子相を研究するのに有効です.
- この方法は,混乱を含む様々な条件下で量子システムの振る舞いを洞察します.
- この研究は 複雑な量子現象の探索に 新たな道を開きます
関連する概念動画
IR Absorption Frequency: Delocalization
1.4K
Electron delocalization refers to the distribution of electrons across multiple atoms within a molecule rather than being confined to a single atom or bond. This phenomenon is common in systems with conjugated bonds—structures where alternating single and double bonds allow π-electrons to move freely across the network. The movement of electrons stabilizes the molecule and can affect various chemical properties, including vibrational frequencies observed in IR spectroscopy.
In IR...
In IR...
1.4K
¹H NMR: Interpreting Distorted and Overlapping Signals
1.6K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.6K
Molecular Spectroscopy: Absorption and Emission
4.8K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
4.8K
NMR Spectroscopy: Spin–Spin Coupling
3.3K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
3.3K
Interaction of EM Radiation with Matter: Spectroscopy
3.5K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
3.5K
UV–Vis Spectroscopy: Molecular Electronic Transitions
3.0K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
3.0K

