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Related Concept Videos

Quantum Numbers02:43

Quantum Numbers

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It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
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Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
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The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Superconducting metamaterials for waveguide quantum electrodynamics.

Mohammad Mirhosseini1,2,3, Eunjong Kim1,2,3, Vinicius S Ferreira1,2,3

  • 1Kavli Nanoscience Institute, California Institute of Technology, Pasadena, CA, 91125, USA.

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|September 14, 2018
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Summary
This summary is machine-generated.

Researchers coupled a transmon qubit to a superconducting metamaterial, achieving enhanced qubit lifetime and controlled spontaneous emission. This work advances quantum electrodynamics and quantum computing applications.

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Area of Science:

  • Quantum Optics
  • Condensed Matter Physics
  • Superconducting Circuits

Background:

  • Controlling quantum emitter interactions with photonic environments is crucial for quantum technologies.
  • Photonic bandgap structures offer a way to engineer these interactions.
  • Superconducting circuits provide a robust platform for quantum information processing.

Purpose of the Study:

  • To embed a tunable transmon qubit within a superconducting metamaterial.
  • To investigate quantum electrodynamics in the slow-light regime and bandgap.
  • To explore controlled enhancement and inhibition of spontaneous emission.

Main Methods:

  • Coupling a transmon qubit to a superconducting metamaterial with a sub-wavelength lattice constant.
  • Utilizing lumped-element microwave resonators to form the metamaterial.
  • Tuning the qubit frequency near a band-edge with a high group index (ng=450).

Main Results:

  • Observed an anomalous Lamb shift of -28 MHz.
  • Achieved a 24-fold enhancement in qubit lifetime.
  • Demonstrated selective enhancement and inhibition of spontaneous emission for different transmon transitions.

Conclusions:

  • Embedding qubits in metamaterials allows for precise control over light-matter interactions.
  • This approach enables access to both short-lived and long-lived qubit states.
  • The findings pave the way for advanced quantum information processing and simulation.