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Related Concept Videos

Chirality02:25

Chirality

31.2K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
31.2K
Chirality in Nature02:30

Chirality in Nature

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Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
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Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

22.6K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
22.6K
Prochirality02:05

Prochirality

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The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
5.2K
Molecules with Multiple Chiral Centers02:25

Molecules with Multiple Chiral Centers

16.0K
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
16.0K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

7.2K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

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Chiral quantum optics.

Peter Lodahl1, Sahand Mahmoodian1, Søren Stobbe1

  • 1Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen, Denmark.

Nature
|January 28, 2017
PubMed
Summary
This summary is machine-generated.

Advanced photonic nanostructures enable chiral quantum optics, controlling light-matter interactions based on photon direction. This breakthrough allows for novel quantum devices and networks with unique functionalities.

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Area of Science:

  • Optics and Photonics
  • Quantum Information Science

Background:

  • Advanced photonic nanostructures confine light, linking polarization to propagation direction.
  • This leads to direction-dependent photon interactions with quantum emitters, a phenomenon absent in standard quantum optics.

Purpose of the Study:

  • Introduce and explore the emerging field of chiral quantum optics.
  • Highlight the potential of chiral light-matter interactions for new quantum technologies.

Main Methods:

  • Theoretical exploration of light confinement in nanostructures.
  • Analysis of photon emission, scattering, and absorption by quantum emitters.

Main Results:

  • Demonstration of propagation-direction-dependent light-matter interactions (chiral effects).
  • Identification of chiral quantum optics as a new research domain.

Conclusions:

  • Chiral quantum optics enables non-reciprocal single-photon devices and deterministic spin-photon interfaces.
  • Engineered photonic reservoirs can facilitate complex quantum networks and simulations.