Related Experiment Video
Updated: Feb 13, 2026
07:59
Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
15.1K
Exponentially Enhanced Light-Matter Interaction, Cooperativities, and Steady-State Entanglement Using Parametric
Wei Qin1,2, Adam Miranowicz2,3, Peng-Bo Li2,4
1Quantum Physics and Quantum Information Division, Beijing Computational Science Research Center, Beijing 100193, China.
Physical Review Letters
|March 17, 2018
Summary
This study introduces a method to boost atom-cavity interaction and cooperativity using optical parametric amplification. This enables strong coupling and high-fidelity quantum entanglement generation in various quantum systems.
Area of Science:
- Quantum Optics
- Quantum Information Processing
Background:
- Atom-cavity interaction and cooperativity are crucial for quantum information processing.
- Enhancing these parameters is challenging due to dissipation and noise.
Purpose of the Study:
- To propose an experimentally feasible method for enhancing atom-field coupling and cooperativity.
- To achieve steady-state nearly maximal quantum entanglement with high fidelity.
Main Methods:
- Utilizing optical parametric amplification to exponentially enhance atom-cavity interaction.
- Eliminating squeezing-induced noise.
- Driving the system from weak to strong coupling regimes.
Main Results:
- Achieved effective cooperativity much larger than 100.
- Demonstrated steady-state nearly maximal quantum entanglement.
- Obtained entanglement infidelity exponentially smaller than existing methods.
Conclusions:
- The proposed method is generic and implementable in various physical systems.
- It significantly enhances atom-cavity interaction and cooperativity.
- Enables high-fidelity quantum entanglement generation for quantum information processing.
Related Concept Videos
01:14Parametric Survival Analysis: Weibull and Exponential Methods
1.1K
Parametric survival analysis models survival data by assuming a specific probability distribution for the time until an event occurs. The Weibull and exponential distributions are two of the most commonly used methods in this context, due to their versatility and relatively straightforward application.
Weibull Distribution
The Weibull distribution is a flexible model used in parametric survival analysis. It can handle both increasing and decreasing hazard rates, depending on its shape parameter...
Weibull Distribution
The Weibull distribution is a flexible model used in parametric survival analysis. It can handle both increasing and decreasing hazard rates, depending on its shape parameter...
1.1K
01:58Cooperative Allosteric Transitions
8.9K
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
8.9K
01:58Cooperative Allosteric Transitions
3.1K
3.1K
02:13Cooperative Binding of Transcription Regulators
7.4K
Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
7.4K
02:49Classifying Matter by State
104.6K
Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, water, soil, mountains, even our bodies are all examples of matter. Matter is divided into three states — solid, liquid, and gas — that are commonly found on earth. The fourth state of matter, plasma, occurs naturally in the interiors of stars.
104.6K
01:12Interaction of EM Radiation with Matter: Spectroscopy
3.4K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
3.4K