Related Experiment Video
Updated: Feb 6, 2026

14:20
Absolute Quantum Yield Measurement of Powder Samples
Published on: May 12, 2012
28.7K
Optimization of a quantum weak measurement system with its working areas
Optics Express
|August 19, 2018
Summary
This study enhances phase-sensitive weak measurement systems by adjusting light polarization and states. The improved system demonstrates amplified weak values, boosting sensitivity and resolution in label-free sensing applications.
Area of Science:
- Quantum measurement
- Optics
- Nanotechnology
Background:
- Phase-sensitive weak measurement is gaining attention for precision sensing.
- Existing systems have limitations in sensitivity and resolution.
Purpose of the Study:
- To introduce novel weak measurement working areas.
- To amplify weak values using adjustable system parameters.
- To enhance sensitivity and resolution in label-free sensing.
Main Methods:
- Adjusting pre-selection and post-selection states.
- Modulating the phase difference between vertically and horizontally polarized light.
- Verifying applicability in a total internal reflection system.
Main Results:
- Weak value amplification by several times within the system.
- Improved sensitivity reaching 1.85 µm/RIU.
- Enhanced resolution up to 6.808 × 10⁻⁷ RIU.
Conclusions:
- The developed weak measurement system offers significant improvements.
- The enhanced sensitivity and resolution are suitable for label-free sensing.
- Adjustable parameters allow for tailored performance in different working areas.
Related Concept Videos
Quantum Numbers
50.8K
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.
50.8K
Weak Base Solutions
25.3K
Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
25.3K
Weak Acid Solutions
43.2K
Few compounds act as strong acids. A far greater number of compounds behave as weak acids and only partially react with water, leaving a large majority of dissolved molecules in their original form and generating a relatively small amount of hydronium ions. Weak acids are commonly encountered in nature, being the substances partly responsible for the tangy taste of citrus fruits, the stinging sensation of insect bites, and the unpleasant smells associated with body odor. A familiar example of a...
43.2K
The Quantum-Mechanical Model of an Atom
58.4K
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.
58.4K
Titration of a Weak Acid with a Weak Base
4.9K
Weak acids and bases do not undergo dissociation completely, and titrations between these two are rarely studied. When such studies are performed, say, for the titration of a weak acid with a weak base, the titration curve plots the change in pH as a function of the volume of base added. Take the titration of acetic acid with ammonia, for instance. During the titration, these two species form ammonium acetate and water, but the pH change is slow and gradual.
As a result, there is no simple...
As a result, there is no simple...
4.9K
Titration Calculations: Weak Acid - Strong Base
49.3K
Calculating pH for Titration Solutions: Weak Acid/Strong Base
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
49.3K

