Related Experiment Video
Updated: Dec 6, 2025
11:45
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
15.0K
Unveiling Chiral Phase Evolution in Rabi Oscillations from a Photonic Setting
Ping Zhang1, Qianqian Kang1, Yumiao Pei1
1The MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Applied Physics Institute and School of Physics, Nankai University, Tianjin 300457, China.
Physical Review Letters
|October 5, 2020
Summary
Chirality is revealed in Rabi oscillations, a phenomenon in driven two-level systems. The phase evolution shows mirror symmetry with detuning, impacting interference in photonic and other systems.
Area of Science:
- Quantum optics
- Quantum information science
- Atomic physics
Background:
- Rabi oscillation is a fundamental phenomenon in driven two-level systems, crucial in fields like nuclear magnetic resonance.
- Chirality, often induced by magnetic fields in quantum phenomena, has not been clearly established in Rabi oscillations.
Purpose of the Study:
- To investigate and unveil the intrinsic chirality within the phase dynamics of a Rabi oscillation problem.
- To explore the symmetry properties and interference effects related to chirality in driven two-level systems.
Main Methods:
- Theoretical analysis of the Rabi problem with detuning of the driving field.
- Experimental demonstration using a photonic system with adjustable detuning to observe phase evolution and interference.
Main Results:
- The phase evolution of the probability amplitude exhibits mirror symmetry for opposite detuning of the driving field.
- Constructive or destructive interference in off-resonant Rabi processes is shown to be level-dependent and symmetry-protected.
- Experimental validation of these chiral features in a tunable photonic system.
Conclusions:
- Intrinsic chirality exists in the phase of Rabi oscillations, protected by symmetry.
- The findings are relevant for understanding driven two-level systems in photonics and potentially other quantum systems.
Related Concept Videos
02:30Chirality in Nature
16.1K
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.
16.1K
01:26Photochemical Electrocyclic Reactions: Stereochemistry
2.1K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
2.1K
02:24Properties of Enantiomers and Optical Activity
20.6K
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,...
20.6K
02:25Chirality
28.6K
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...
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...
28.6K
01:20Raman Spectroscopy: Overview
1.1K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
1.1K
02:05Prochirality
4.6K
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...
4.6K