Related Experiment Video
Updated: Jul 9, 2026
09:12
Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities
Published on: April 22, 2013
12.4K
Coherently forming a single molecule in an optical trap.
Xiaodong He1,2, Kunpeng Wang3,2,4, Jun Zhuang3,2,4
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, APM, Chinese Academy of Sciences, Wuhan 430071, China. hexd@wipm.ac.cn mszhan@wipm.ac.cn.
Science (New York, N.Y.)
|September 25, 2020
Summary
Researchers developed a new method for coherently forming ultracold molecules using lasers. This technique allows precise control over atom-molecule systems, paving the way for advanced quantum applications.
Area of Science:
- Atomic, Molecular, and Optical (AMO) Physics
- Quantum Information Science
- Chemical Physics
Background:
- Ultracold single molecules are crucial for applications like quantum simulation and precision measurements.
- Achieving coherent control over atom-molecule systems for molecule formation is a significant challenge.
Purpose of the Study:
- To demonstrate a novel, efficient method for the coherent formation of ultracold molecules.
- To enable precise control over all degrees of freedom in atom-molecule systems.
Main Methods:
- Coupling atomic spins to the two-body relative motion of atoms within a tightly focused laser.
- Utilizing inherent polarization gradients in the laser field.
- Observing long-lived atom-molecule Rabi oscillations to confirm coherence.
Main Results:
- Coherent binding of two atoms into weakly bound molecules at megahertz rates.
- Demonstrated manipulation of molecular motional levels.
- Precise measurement of molecular binding energy.
Conclusions:
- This work presents a breakthrough in the coherent formation of ultracold molecules.
- The developed technique offers a pathway to full control over all degrees of freedom in atom-molecule systems.
- Opens new possibilities for ultracold chemistry, quantum simulation, and precision measurements.
Related Concept Videos
02:12The Wave Nature of Light
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
01:20Mass Spectrometry: Molecular Fragmentation Overview
The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an electron. This eventually leads to the fragmentation or breaking of some bonds in the molecule. The fragmentation occurs predominantly at specific bonds to yield relatively stable fragments.
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...
01:14Molecular Spectroscopy: Absorption and Emission
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
01:16Confocal Fluorescence Microscopy
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
01:25Deactivation Processes: Jablonski Diagram
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
01:24A Single-Component System
In the field of chemistry, the terms "component" and "phase" hold significant importance. A component refers to a chemically distinct substance in a system that has specific properties. It is chemically homogeneous, meaning it has the same properties throughout. For example, in a mixture of salt and water, both salt and water are considered separate components because they have different chemical properties.On the other hand, a phase is a form of matter that has a consistent chemical...