scholarly journals The Optomechanical Response of a Cubic Anharmonic Oscillator

2020 ◽  
Vol 10 (16) ◽  
pp. 5719
Author(s):  
Sumei Huang ◽  
Hongmiao Hao ◽  
Aixi Chen
Keyword(s):  
Precision Measurement ◽  
Anharmonic Oscillator ◽  
Electromagnetically Induced Transparency ◽  
Cavity Resonance ◽  
Mechanical Oscillator ◽  
Probe Field ◽  
Optomechanical System ◽  
Asymmetric Shape ◽  
Sideband Generation ◽  
Induced Transparency

The nonlinearity of a mechanical oscillator may lead to the generation of the macroscopic quantum states, which are useful for precision measurement. Measuring the nonlinearity of a mechanical oscillator becomes important in order to effectively assess its performance. In this paper, we study the electromagnetically induced transparency (EIT) in an optomechanical system with a cubic nonlinear movable mirror. In the presence of the nonlinearity of the movable mirror, we show that the intensity of the output probe field exhibits an asymmetric shape with the transparency peak shifted to a frequency lower than the cavity resonance frequency. This shift can be used to measure the nonlinearity strength of the movable mirror. We also show that the mechanical nonlinearity gives rise to the enhancement of the intensity of the second-order upper sideband generation.

scholarly journals Optomechanically Induced Transparency

Science ◽  
2010 ◽  
Vol 330 (6010) ◽  
pp. 1520-1523 ◽  
Author(s):  
Stefan Weis ◽  
Rémi Rivière ◽  
Samuel Deléglise ◽  
Emanuel Gavartin ◽  
Olivier Arcizet ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Electromagnetically Induced Transparency ◽  
Destructive Interference ◽  
Probe Field ◽  
Optomechanical System ◽  
Light Pulses ◽  
Quantum Interference Effect ◽  
On Chip ◽  
Induced Transparency ◽  
Optomechanically Induced Transparency

Electromagnetically induced transparency is a quantum interference effect observed in atoms and molecules, in which the optical response of an atomic medium is controlled by an electromagnetic field. We demonstrated a form of induced transparency enabled by radiation-pressure coupling of an optical and a mechanical mode. A control optical beam tuned to a sideband transition of a micro-optomechanical system leads to destructive interference for the excitation of an intracavity probe field, inducing a tunable transparency window for the probe beam. Optomechanically induced transparency may be used for slowing and on-chip storage of light pulses via microfabricated optomechanical arrays.

Observation of electromagnetically induced transparency in a ring cavity

Open Physics ◽  
2012 ◽  
Vol 10 (5) ◽  
Author(s):  
E. Wu ◽  
Yong-Hong Ma ◽  
Xiang-Gang Han
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Ring Cavity ◽  
Input Power ◽  
Current Paper ◽  
Probe Field ◽  
Optomechanical System ◽  
Output Field ◽  
Induced Transparency

AbstractA scheme to observe Electromagnetically induced transparency (EIT) in an optomechanical system is proposed in the current paper. We treat a narrowband squeezed field as the weak probe field. We find that EIT dips exist in the output field. Moreover, the dependence of the EIT dips on the effective cavity detuning Δ and the input power ζ are explored. We show that the width of the EIT dips can be controlled by the parameters ξ and the detuning Δ.

Electromagnetically induced transparency in a three-mode optomechanical system

2014 ◽  
Vol 23 (11) ◽  
pp. 114201 ◽  
Author(s):  
Xiao-Bo Yan ◽  
Kai-Hui Gu ◽  
Chang-Bao Fu ◽  
Cui-Li Cui ◽  
Jin-Hui Wu
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Optomechanical System ◽  
Induced Transparency

scholarly journals Study of Atomic Populations, Electromagnetically Induced Transparency, and Dispersive Signals in a λ-Type System Under Various Decoherence Effects

2019 ◽  
Vol 64 (3) ◽  
pp. 197
Author(s):  
R. Hazra ◽  
Md.M. Hossain
Keyword(s):  
Excited States ◽  
Electromagnetically Induced Transparency ◽  
Energy Levels ◽  
Type System ◽  
Field Approximation ◽  
Peak Height ◽  
Probe Field ◽  
Set Up ◽  
Induced Transparency ◽  
Atomic Populations

We have theoretically studied the atomic populations, electromagnetically induced transparency (EIT), and dispersion in a three-level Λ-type system. The density matrix equations are set up with regard for the relaxation of populations of the ground states, and the optical Bloch equations are solved analytically in the weak probe field approximation. Decoherence effects in the ground and excited states on the EIT line shape and dispersive signals are studied, and it is found that the EIT line width increases and the peak height decreases, as the decoherence rates increase in the ground and excited states. On the other hand, we have observed that the dispersive signals are steeper and of high contrast for the lower decoherence rates in the ground and excited states. We have also analyzed the variations of atomic populations of the energy levels at the pump Rabi frequency, as well as the decoherence rate in the ground state.

Manipulation of pulse propagation in a four-level quantum system via an elliptically polarized light in the presence of external magnetic field

2015 ◽  
Vol 29 (30) ◽  
pp. 1550185 ◽  
Author(s):  
R. Karimi ◽  
S. H. Asadpour ◽  
S. Batebi ◽  
H. Rahimpour Soleimani
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Pulse Propagation ◽  
Electromagnetically Induced Transparency ◽  
Polarized Light ◽  
Group Index ◽  
Probe Field ◽  
Coherent Field ◽  
Fast Light ◽  
Induced Transparency

The influence of external magnetic field and relative phase between two electric field components of the probe field on absorption–dispersion and group index of a four-level atomic system with two degenerate sublevels are investigated. The results show that, the behaviors of weak probe light can be controlled by an external magnetic field. It is shown that in the presence of the external magnetic field the additional electromagnetically induced transparency (EIT) window can be obtained. Our result also reveal that the switching from slow to fast light or vice versa can be manipulated by changing the phase difference between the two circularly polarized components of a single coherent field.

Electromagnetically induced transparency in a rectangular quantum dot on a single electron

2019 ◽  
Vol 17 (2) ◽  
pp. 131-144
Author(s):  
Vladan Pavlovic ◽  
Zeljko Laic ◽  
Ljiljana Stevanovic ◽  
Nikola Filipovic
Keyword(s):  
Quantum Dot ◽  
Electromagnetically Induced Transparency ◽  
Relaxation Mechanism ◽  
Single Electron ◽  
Cryogenic Temperatures ◽  
Matrix Elements ◽  
Probe Field ◽  
And Control ◽  
Induced Transparency ◽  
Dephasing Rate

In this paper, we investigated the realization of electromagnetically induced transparency (EIT) in a rectangular quantum dot (QD) with a single electron in the presence of probe and control laser fields. The lowest three levels of the confined electron that form ladder and V configuration were chosen. We discussed the dependence of density matrix elements for ladder configuration and for V configuration on detunings of the probe field for various values of quantum dot dimensions. This dependence is discussed for both cases, at cryogenic temperatures when spontaneous emission dominates the relaxation mechanism and at room or higher temperatures when dephasing rate cannot be neglected.

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