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Related Concept Videos

Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

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The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
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The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
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Certain mathematical functions exhibit unpredictable or highly variable behavior near specific input values, making direct evaluation of their limits challenging. This complexity may arise from rapid oscillations or irregular patterns that obscure the function’s trend. In such cases, the Squeeze Theorem offers a reliable method for determining limits.According to the Squeeze Theorem, if a function is confined between two other functions near a particular point, and both outer functions...
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Atomic Absorption Spectroscopy: Radiation and Light Sources

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Operational Amplifiers

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The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
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Related Experiment Video

Updated: Feb 14, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Atom-resonant squeezed light from a tunable monolithic ppRKTP parametric amplifier.

Joanna A Zielińska, Morgan W Mitchell

    Optics Letters
    |February 15, 2018
    PubMed
    Summary

    We achieved vacuum squeezing in atomic rubidium using a tunable optical parametric oscillator. This quantum effect was observed undiminished by the material's strong nonlinear optical properties.

    Area of Science:

    • Quantum optics
    • Atomic physics
    • Nonlinear optics

    Background:

    • Quantum squeezing is crucial for precision measurements.
    • Atomic vapors offer unique platforms for quantum optics experiments.
    • Nonlinear optical effects can impact quantum phenomena.

    Purpose of the Study:

    • To demonstrate vacuum squeezing at the rubidium D1 line.
    • To investigate the influence of nonlinear optical effects on squeezing.

    Main Methods:

    • Utilized a tunable, monolithic, doubly-resonant subthreshold optical parametric oscillator.
    • Employed periodically-poled Rb-doped potassium titanyl phosphate (ppRKTP).
    • Operated at the D1 line of atomic rubidium (795 nm).

    Main Results:

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    • Successfully demonstrated vacuum squeezing at 795 nm in atomic rubidium.
    • Observed that the squeezing effect is not diminished by strong dispersive optical nonlinearity.

    Conclusions:

    • Vacuum squeezing is achievable in atomic rubidium systems.
    • The observed nonlinear optical effects do not impede quantum squeezing, opening possibilities for robust quantum technologies.