Related Experiment Video
Updated: Jul 3, 2025

06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.0K
Coherent control of two Jaynes-Cummings cavities
L O Castaños-Cervantes1, Lorenzo M Procopio2, Marco Enríquez3
1Tecnologico de Monterrey, School of Engineering and Sciences, 14380, Mexico City, Mexico.
Scientific Reports
|February 15, 2024
Summary
We demonstrate novel ways to control atomic behavior using quantum indefiniteness in two cavities. This research opens new avenues for manipulating quantum systems and creating entangled states.
Area of Science:
- Quantum optics
- Atomic physics
- Quantum information science
Background:
- The interaction between atoms and light is fundamental to quantum optics.
- Controlling quantum systems precisely is crucial for developing quantum technologies.
- The James-Cummings model provides a framework for studying atom-field interactions.
Purpose of the Study:
- To explore the effects of quantum indefiniteness on a two-level atom interacting with two cavities.
- To investigate novel methods for manipulating atomic dynamics using coherent control.
- To analyze the creation of entangled states in cavity fields.
Main Methods:
- Utilizing the James-Cummings model to describe atom-field interactions.
- Implementing coherent control strategies for two cavities in a superposition.
- Analyzing atomic dynamics and cavity field states.
Main Results:
- Coherent control in an undefined manner enables unprecedented manipulation of atomic dynamics.
- Novel possibilities for on-demand control of quantum systems are demonstrated.
- Highly entangled states, including Bell-like and Schrödinger-cat-like states, are generated in the cavity fields.
Conclusions:
- Quantum indefiniteness offers new pathways for controlling atom-field interactions.
- The study advances the understanding and harnessing of quantum systems.
- This work opens new research directions in quantum control and entanglement generation.
Related Concept Videos
Standing Waves in a Cavity
920
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
920
Conservation of Energy in Control Volume
837
Consider a turbine operating under steady-flow conditions. The control volume is drawn around the turbine, with fluid entering at one point and exiting at another. The turbine extracts energy from the fluid, which performs mechanical work (shaft work).
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
For steady flow systems, the time derivative of the stored energy becomes zero since there is no energy accumulation within the control volume. This simplifies the energy equation to:
837
Oscillations In An LC Circuit
2.3K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
2.3K
Open and closed-loop control systems
744
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
744
Resonance in an AC Circuit
2.1K
The property of an inductor makes it resist any change in the current passing through it, while the property of a capacitor is to build up the charge across its terminals. Hence, if an inductor and capacitor are connected in series, they have opposite effects on the relative phase between current and voltage. The current through the circuit undergoes forced oscillation at the frequency of the source. The resistance term in an R-L-C circuit acts as a damping term because power is dissipated...
2.1K
Damped Oscillations
5.7K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
5.7K

