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We study the squeezing of output quadratures of an electro-magnetic field escaping from a resonator coupled to a general quantum system with arbitrary interaction strengths. The generalized theoretical analysis of output squeezing proposed…

Quantum Physics · Physics 2016-12-08 Roberto Stassi , Salvatore Savasta , Luigi Garziano , Bernardo Spagnolo , Franco Nori

The radiation-pressure driven interaction of a coherent light field with a mechanical oscillator induces correlations between the amplitude and phase quadratures of the light. These correlations result in squeezed light -- light with…

We propose a simple method for generating spin squeezing of atomic ensembles in a Floquet cavity subject to a weak, detuned two-photon driving. We demonstrate that {\it the weak squeezing of light inside the cavity can, counterintuitively,…

Quantum Physics · Physics 2021-07-07 Wei Qin , Ye-Hong Chen , Xin Wang , Adam Miranowicz , Franco Nori

Photonic molecules are composed of two or more optical resonators, arranged such that some of the modes of each resonator are coupled to those of the other. Such structures have been used for emulating the behaviour of two-level systems,…

Entanglement and quantum squeezing have wide applications in quantum technologies due to their non-classical characteristics. Here we study entanglement and quantum squeezing in an open spin-optomechanical system, in which a Rabi model (a…

Quantum Physics · Physics 2020-02-19 Zhucheng Zhang , Xiaoguang Wang

Quantum noise limits the sensitivity of optical measurements, but squeezed states of light enable quantum-enhanced metrology, sensing, and information processing. Most on-chip squeezed-light sources rely on Kerr ($\chi^{(3)}$)…

A theory of photoluminescence in semiconductor quantum dots is developed which relies on two key ingredients. First, it takes into account non-adiabaticity of the exciton-phonon system. Second, it includes the multimode dielectric model of…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 J. T. Devreese , V. M. Fomin , V. N. Gladilin , S. N. Klimin

Squeezed states of light are used for precision metrology and quantum-enhanced measurements, with applications spanning communication and sensing. State-of-the-art squeezed-light sources typically rely on optical cavities to achieve high,…

Optics · Physics 2026-03-30 Erik Anders Torsten Svanberg , Daniel Voigt , Vaishali Adya

Controlled non-local energy and coherence transfer enables light harvesting in photosynthesis and non-local logical operations in quantum computing. The most relevant mechanism of coherent coupling of distant qubits is coupling via the…

We create squeezed light by exploiting the quantum nature of the mechanical interaction between laser light and a membrane mechanical resonator embedded in an optical cavity. The radiation pressure shot noise (fluctuating optical force from…

Quantum Physics · Physics 2013-10-23 T. P. Purdy , P. -L. Yu , R. W. Peterson , N. S. Kampel , C. A. Regal

We develop a quantum theory for the scattering of squeezed coherent light by a dissipative dielectric slab. Using the Green-function quantization approach, we derive the transformation of the field quadratures and show how dispersion,…

Quantum Physics · Physics 2026-02-09 Ghafoor Pooseh

Electro-optical feedback can produce an in-loop photocurrent with arbitrarily low noise. This is not regarded as evidence of `real' squeezing because squeezed light cannot be extracted from the loop using a linear beam splitter. Here I show…

Quantum Physics · Physics 2009-10-31 H. M. Wiseman

Polariton emission from optical cavities integrated with various luminophores has been extensively studied recently due to the wide variety of possible applications in photonics, particularly promising in terms of fabrication of…

Mesoscale and Nanoscale Physics · Physics 2021-07-28 Dmitriy Dovzhenko , Maksim Lednev , Konstantin Mochalov , Ivan Vaskan , Pavel Samokhvalov , Yury Rakovich , Igor Nabiev

Semiconductors in all dimensionalities ranging from 0D quantum dots and molecules to 3D bulk crystals support bound electron-hole pair quasiparticles termed as excitons. Over the past two decades, the emergence of a variety of…

Materials Science · Physics 2021-08-03 Surendra B. Anantharaman , Kiyoung Jo , Deep Jariwala

Non-classical states of light, such as number-squeezed light, with fluctuations below the classical shot noise level, have important uses in metrology, communication, quantum information processing, and quantum simulation. However,…

Quantum Physics · Physics 2023-06-06 Linh Nguyen , Jamison Sloan , Nicholas Rivera , Marin Soljacic

The cascaded biphoton state generated from a cold atomic ensemble presents one of the strongly correlated resources that can preserve and relay quantum information. Under the four-wave mixing condition, the emitted signal and idler photons…

Quantum Physics · Physics 2021-11-18 Y. -E Wong , N. -Y. Tsai , W. S. Hiew , H. H. Jen

Photons do not carry sufficient momentum to induce indirect optical transitions in semiconducting materials such as silicon, necessitating the assistance of lattice phonons to conserve momentum. Compared to direct bandgap semiconductors,…

Coherence has been remaining a key resource for numerous applications of quantum physics ranging from quantum metrology to quantum information. Here, we report a theoretical work on how maximally created coherence results in the squeezing…

Quantum Physics · Physics 2022-04-06 Parvendra Kumar , Agnikumar G. Vedeshwar

For a single semiconductor quantum dot embedded in a microcavity, we theoretically and experimentally investigate phonon-assisted transitions between excitons and the cavity mode. Within the framework of the independent boson model we find…

Mesoscale and Nanoscale Physics · Physics 2009-12-21 Ulrich Hohenester , Arne Laucht , Michael Kaniber , Norman Hauke , Abbas Mohtashami , Marek Seliger , Jonathan J. Finley

Annual Review of Astronomy and Astrophysics, Volume 51, page 511e studied for coherently driven single photon sources, such as atoms and quantum dots. Maximal squeezing is realized, if the electronic subsystem of the emitter is in a pure…

Quantum Physics · Physics 2013-08-30 P. Grünwald , W. Vogel
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