Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of the Optical Society of America B

Perfect squeezing of terahertz light by two quantum wells using a squeezed vacuum reservoir

Houcem Jabri, Hichem Eleuch

Published Jan 16, 2019• 8 citations
Publisher

Abstract

The nonclassical properties of a microcavity confining two quantum wells irradiated by a coherent light source and interacting with a squeezed vacuum reservoir are investigated. By deriving analytical expressions of the intensity power spectrum, the squeezing spectrum, and the second-order correlation function of the output field, we show that the proposed scheme generates perfect squeezing. The obtained results are quite different from the single-quantum-well cavity system where, under the same conditions, squeezing does not exceed 50%, and the transmitted light is bunched. It turns out that the presence of indirect excitons in the cavity strongly modifies the quantum dynamics of the system.

DOI
10.1364/josab.36.0000c1

Related papers

Nonlinear dynamics in a dipolariton cavity with a squeezed vacuum

Houcem Jabri, Hichem Eleuch

Dipolaritons are quasiparticles formed in double quantum wells’ microcavities driven by a coherent field. Here, we investigate the correlations and the quantum fluctuations in the light emitted by a dipolariton cavity pumped by a laser. By studying the noise spectrum in the strong and weak coupling regimes, we show that the squeezing generated by the direct and indirect excitonic nonlinearities is strongly enhanced by coupling the system to a squeezed vacuum. As a consequence, this coupling transforms the statistical light propriety from coherent to highly squeezed states, depending on the squeeze parameter strength. Furthermore, the squeezed reservoir stabilizes the nonclassical effect even with the high fluctuations caused by indirect exciton nonlinearity. It turns out that the combination of excitonic nonlinearities and squeezed vacuum is a good solution for producing stable and strong squeezing.

Journal of the Optical Society of America B•Apr 27, 2020•8 citations

Quantum correlations and optical effects in a quantum-well cavity with a second-order nonlinearity

Houcem Jabri

Abstract In this paper, we investigate the photon correlations and the statistical properties of light produced by an optical cavity with an embedded quantum well interacting with squeezed light. We show that the squeezed source substantially improves the intensity of the emitted light and generates a narrowing and a duplication of the spectrum peaks. With a strong dependence on frequency detuning, the cavity produces considerably squeezed radiation, and perfect squeezing is predicted for weak light–matter interactions. Furthermore, the system under consideration presents a bunching effect of the transmitted radiation resulting from weak pumping of the coherent field. The results obtained may have potential applications in the fields of very accurate measurement and quantum computing.

Communications in Theoretical Physics•Jul 19, 2021•0 citations

Squeezed vacuum interaction with an optomechanical cavity containing a quantum well

Houcem Jabri, Hichem Eleuch

We investigate a hybrid system consisting of an optomechanical resonator and an optical cavity containing a quantum well. The system is coupled to a squeezed vacuum reservoir. We analyze the effect of the injection of squeezed photons inside the cavity on the intensity spectrum. The system reaches a regime of hybrid resonance where mechanical, excitonic and cavity modes are intermixed. Despite that the optomechanical interaction is the source of the nonlinearity in the system, the optimum squeezing is obtained at the hybrid resonance frequencies. However, when the squeezed vacuum is applied, at these frequencies the minimum squeezing is realized as well as an increase of fluctuations is observed. We show that the squeezed vacuum transforms the coherent states into highly squeezed states of light, and offers a great flexibility to obtain maximal squeezing. Furthermore, a perfect squeezing is predicted.

Scientific Reports•Mar 7, 2022•15 citations

External-field effect on quantum features of radiation emitted by a quantum well in a microcavity

Eyob Alebachew Sete, Sumanta Das, Hichem Eleuch

We consider a semiconductor quantum well in a microcavity driven by coherent light and coupled to a squeezed vacuum reservoir. By systematically solving the pertinent quantum Langevin equations in the strong-coupling and low-excitation regimes, we study the effect of exciton-photon detuning, external coherent light, and the squeezed vacuum reservoir on vacuum Rabi splitting and on quantum statistical properties of the light emitted by the quantum well. We show that the exciton-photon detuning leads to a shift in polariton resonance frequencies and a decrease in fluorescence intensity. We also show that the fluorescent light exhibits quadrature squeezing, which predominately depends on the exciton-photon detuning and the degree of the squeezing of the input field.

arXiv:1109.4375•Physical Review A•Feb 25, 2011•19 citations

Quantum Noise and Squeezed Light by Dipolaritons in the Nonlinear Regime

Houcem Jabri, Hichem Eleuch

Abstract The quantum noise and the squeezing effect, in the transmitted light, by a dipolariton system formed by a double quantum wells microcavity in the strong coupling regime are investigated. It is shown that the indirect exciton nonlinearity generates stronger squeezing than the direct exciton nonlinearity, nevertheless produces very high fluctuations for some particular detunings and nonlinearities. The system shows a considerable sensitivity to the thermal excitations where the coupling to the direct and indirect excitonic thermal baths progressively destroys the nonclassical effect. Despite that, indirect exciton squeezing manifests a higher resistance against the thermal bath temperature. As a result, the emission field is strongly governed by the indirect excitons, varying between robust squeezing and excess noise.

Annalen der Physik•Nov 7, 2019•7 citations

Quantum fluctuations inside a microcavity with a pair of quantum wells: linear regime

Houcem Jabri, Hichem Eleuch

Quantum fluctuations of a system formed by two quantum wells inside a microcavity are investigated. The noise spectrum and the autocorrelation function are analyzed, and analytical expressions are derived. It is shown here that the noises are equally balanced over direct and indirect exciton thermal baths. The double quantum well system induces more fluctuations compared to the system formed by a single quantum well inside a microcavity. Unlike the latter system, the autocorrelation function of the cavity depends on the exciton thermal bath populations. It turns out that the photon detection probability is affected by coupling with the indirect exciton thermal bath.

Journal of the Optical Society of America B•Aug 29, 2018•11 citations
The nonclassical properties of a microcavity confining two quantum wells irradiated by a coherent light source and interacting with a squeezed vacuum reservoir are investigated. By deriving analytical expressions of the intensity power spectrum, the squeezing spectrum, and the second-order correlation function of the output field, we show that the proposed scheme generates perfect squeezing. The obtained results are quite different from the single-quantum-well cavity system where, under the same conditions, squeezing does not exceed 50%, and the transmitted light is bunched. It turns out that the presence of indirect excitons in the cavity strongly modifies the quantum dynamics of the system.
Dipolaritons are quasiparticles formed in double quantum wells’ microcavities driven by a coherent field. Here, we investigate the correlations and the quantum fluctuations in the light emitted by a dipolariton cavity pumped by a laser. By studying the noise spectrum in the strong and weak coupling regimes, we show that the squeezing generated by the direct and indirect excitonic nonlinearities is strongly enhanced by coupling the system to a squeezed vacuum. As a consequence, this coupling transforms the statistical light propriety from coherent to highly squeezed states, depending on the squeeze parameter strength. Furthermore, the squeezed reservoir stabilizes the nonclassical effect even with the high fluctuations caused by indirect exciton nonlinearity. It turns out that the combination of excitonic nonlinearities and squeezed vacuum is a good solution for producing stable and strong squeezing.
Abstract In this paper, we investigate the photon correlations and the statistical properties of light produced by an optical cavity with an embedded quantum well interacting with squeezed light. We show that the squeezed source substantially improves the intensity of the emitted light and generates a narrowing and a duplication of the spectrum peaks. With a strong dependence on frequency detuning, the cavity produces considerably squeezed radiation, and perfect squeezing is predicted for weak light–matter interactions. Furthermore, the system under consideration presents a bunching effect of the transmitted radiation resulting from weak pumping of the coherent field. The results obtained may have potential applications in the fields of very accurate measurement and quantum computing.
We investigate a hybrid system consisting of an optomechanical resonator and an optical cavity containing a quantum well. The system is coupled to a squeezed vacuum reservoir. We analyze the effect of the injection of squeezed photons inside the cavity on the intensity spectrum. The system reaches a regime of hybrid resonance where mechanical, excitonic and cavity modes are intermixed. Despite that the optomechanical interaction is the source of the nonlinearity in the system, the optimum squeezing is obtained at the hybrid resonance frequencies. However, when the squeezed vacuum is applied, at these frequencies the minimum squeezing is realized as well as an increase of fluctuations is observed. We show that the squeezed vacuum transforms the coherent states into highly squeezed states of light, and offers a great flexibility to obtain maximal squeezing. Furthermore, a perfect squeezing is predicted.
We consider a semiconductor quantum well in a microcavity driven by coherent light and coupled to a squeezed vacuum reservoir. By systematically solving the pertinent quantum Langevin equations in the strong-coupling and low-excitation regimes, we study the effect of exciton-photon detuning, external coherent light, and the squeezed vacuum reservoir on vacuum Rabi splitting and on quantum statistical properties of the light emitted by the quantum well. We show that the exciton-photon detuning leads to a shift in polariton resonance frequencies and a decrease in fluorescence intensity. We also show that the fluorescent light exhibits quadrature squeezing, which predominately depends on the exciton-photon detuning and the degree of the squeezing of the input field.
Abstract The quantum noise and the squeezing effect, in the transmitted light, by a dipolariton system formed by a double quantum wells microcavity in the strong coupling regime are investigated. It is shown that the indirect exciton nonlinearity generates stronger squeezing than the direct exciton nonlinearity, nevertheless produces very high fluctuations for some particular detunings and nonlinearities. The system shows a considerable sensitivity to the thermal excitations where the coupling to the direct and indirect excitonic thermal baths progressively destroys the nonclassical effect. Despite that, indirect exciton squeezing manifests a higher resistance against the thermal bath temperature. As a result, the emission field is strongly governed by the indirect excitons, varying between robust squeezing and excess noise.
Quantum fluctuations of a system formed by two quantum wells inside a microcavity are investigated. The noise spectrum and the autocorrelation function are analyzed, and analytical expressions are derived. It is shown here that the noises are equally balanced over direct and indirect exciton thermal baths. The double quantum well system induces more fluctuations compared to the system formed by a single quantum well inside a microcavity. Unlike the latter system, the autocorrelation function of the cavity depends on the exciton thermal bath populations. It turns out that the photon detection probability is affected by coupling with the indirect exciton thermal bath.