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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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Hydraulic Jump: Problem Solving01:16

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To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
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Hydraulic Jump01:29

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A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
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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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Diode: Reverse bias01:14

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A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
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The thermodynamic processes can be classified into reversible and irreversible processes. The processes that can be restored to their initial state are called reversible processes. It is only possible if the process is in quasi-static equilibrium, i.e., it takes place in infinitesimally small steps, and the system remains at equilibrium However, these are ideal processes and do not occur naturally. An ideal system undergoing a reversible process is always in thermodynamic equilibrium within...
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A Simple Flight Mill for the Study of Tethered Flight in Insects
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To catch and reverse a quantum jump mid-flight.

Z K Minev1,2, S O Mundhada3, S Shankar3

  • 1Department of Applied Physics, Yale University, New Haven, CT, USA. zlatko.minev@aya.yale.edu.

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|June 5, 2019
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Summary
This summary is machine-generated.

Researchers can now predict and control quantum jumps in superconducting atoms. By monitoring an auxiliary energy level, they can track the jump

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Area of Science:

  • Quantum Physics
  • Atomic Physics
  • Quantum Optics

Background:

  • Quantum measurements yield discrete and random results, exemplified by quantum jumps between atomic energy levels.
  • Quantum jumps were experimentally observed in atomic ions under specific measurement conditions.
  • The timing of quantum jumps has been considered fundamentally unpredictable.

Purpose of the Study:

  • To investigate if quantum jumps, despite their non-deterministic nature, can be predicted.
  • To experimentally demonstrate the possibility of tracking and intervening in quantum jumps.
  • To explore real-time control techniques for quantum systems.

Main Methods:

  • Experimentally tracking quantum jumps in a superconducting artificial three-level atom.
  • Monitoring the population of an auxiliary energy level coupled to the ground state.
  • Utilizing real-time monitoring and feedback to intervene in quantum jumps mid-flight.

Main Results:

  • Demonstrated that quantum jumps follow a predictable 'flight' path.
  • Showed that the evolution of completed quantum jumps is continuous, coherent, and deterministic.
  • Successfully caught and reversed quantum jumps mid-flight using real-time feedback.

Conclusions:

  • Quantum jumps can be predicted and controlled in real-time.
  • Findings support modern quantum trajectory theory and its predictions.
  • Opens new avenues for real-time intervention in quantum systems, including quantum error correction.