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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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The Quantum-Mechanical Model of an Atom02:45

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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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Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
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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.
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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...
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Deterministic teleportation of a quantum gate between two logical qubits.

Kevin S Chou1,2, Jacob Z Blumoff3,4,5, Christopher S Wang3,4

  • 1Department of Applied Physics and Physics, Yale University, New Haven, CT, USA. kevin.chou@yale.edu.

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Researchers demonstrate deterministic teleportation of a quantum logic gate, a crucial step for building robust, modular quantum computers. This advance uses real-time adaptive control and error-correctable logical qubits for fault-tolerant quantum computation.

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Area of Science:

  • Quantum computing
  • Quantum information science
  • Modular quantum architectures

Background:

  • Large-scale quantum processors face challenges from noise and errors.
  • Modularity offers a robust strategy for building complex quantum systems.
  • Quantum networks connect separate quantum systems for enhanced computation.

Purpose of the Study:

  • To experimentally demonstrate deterministic teleportation of an entangling quantum gate.
  • To implement a controlled-NOT (CNOT) gate between two logical qubits using error-correctable encoding.
  • To advance the development of modular quantum architectures for fault-tolerant quantum computation.

Main Methods:

  • Experimental demonstration of quantum gate teleportation.
  • Utilizing real-time adaptive control to achieve deterministic gate transfer.
  • Encoding quantum information in superconducting cavities for error correction.

Main Results:

  • Successful deterministic teleportation of a controlled-NOT (CNOT) gate.
  • Achieved a process fidelity of 79% for the teleported gate between logical qubits.
  • Demonstrated a key step towards robust, error-correctable quantum modules.

Conclusions:

  • Deterministic teleportation of entangling gates is achievable.
  • Modular architectures with error-correctable logical qubits are promising for fault-tolerant quantum computation.
  • This work has implications for quantum communication, metrology, and simulations.