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We study confined scattering of a quantum particle by two centers fixed on the longitudinal axis of a harmonic waveguide-like trap. The conditions of confinement-induced resonances (CIRs) appearing in these systems, when scattering cross…

Quantum Physics · Physics 2019-03-27 Sara Shadmehri , Vladimir S. Melezhik

Recent experiments and theory demonstrate that the the ground state properties and chemical reactivity of molecules can be modified inside an optical cavity. The vibrational strong or ultrastrong coupling results in the formation of…

Chemical Physics · Physics 2022-12-01 Qi Yu

We are interested in the emission characteristics of an atom interacting with the polaritonic excitations of a semiconductor or insulator embedded in a one-mode cavity. Since polaritons inside of the cavity exhibit intrinsic squeezing, we…

Mesoscale and Nanoscale Physics · Physics 2018-07-18 Paolo Schwendimann , Antonio Quattropani

In the context of quantum field theories in curved spacetime, we compute the effective action of the transition amplitude from vacuum to vacuum in the presence of an external gravitational field. The imaginary part of resulted effective…

High Energy Physics - Theory · Physics 2009-11-07 She-Sheng Xue

Nonlinear interactions between phonon modes govern the behavior of vibrationally highly excited solids and molecules. Here, we demonstrate theoretically that optical cavities can be used to control the redistribution of energy from a highly…

Materials Science · Physics 2021-08-25 Dominik M. Juraschek , Tomáš Neuman , Johannes Flick , Prineha Narang

Intuitively, light impinging on a spatially symmetric object will be scattered symmetrically. This intuition can fail at the nanoscale if the polarization of the incoming light is properly tailored. In fact, it has been demonstrated that…

We predict and analyze {\it radiation-induced quantum interference effect} in low-dimensional $n$-$p$ junctions. This phenomenon manifests itself by large oscillations of the photocurrent as a function of the gate voltage or the frequency…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 M. V. Fistul , S. V. Syzranov , A. M. Kadigrobov , K. B. Efetov

Cathodoluminescence spectroscopy has recently emerged as a novel platform for nanoscale control of nonclassical features of light. Here, we propose a theoretical model for cathodoluminescence from a multi-level quantum emitter. Employing a…

Quantum Physics · Physics 2025-02-03 H. B. Crispin , N. Talebi

We propose a method to exploit high finesse optical resonators for light assisted coherent manipulation of atomic ensembles, overcoming the limit imposed by the finite response time of the cavity. The key element of our scheme is to rapidly…

Atomic Physics · Physics 2021-07-07 A. Bertoldi , C. -H. Feng , D. S. Naik , B. Canuel , P. Bouyer , M. Prevedelli

We analyse the effect of a strong perpendicular magnetic field on an intersubband transition in a disordered doped quantum well strongly coupled to an optical cavity. The magnetic field changes the lineshape of the intersubband optical…

We theoretically study the quantum interference induced photon blockade phenomenon in atom cavity QED system, where the destructive interference between two different transition pathways prohibits the two-photon excitation. Here, we first…

Quantum Physics · Physics 2019-12-18 K. Hou , C. J. Zhu , Y. P. Yang , G. S. Agarwal

We have determined both the real and imaginary parts of the dielectric polarizability of a single quantum dot. The experiment is based on the observation and the manipulation of Rayleigh scattering at photon frequencies near the resonance…

Mesoscale and Nanoscale Physics · Physics 2007-12-03 B. Alén , A. Högele , M. Kroner , S. Seidl , K. Karrai , R. J. Warburton , A. Badolato , G. Medeiros-Ribeiro , P. M. Petroff

Strong light-induced interactions between atoms are known to cause nonlinearities at a few-photon level which are crucial for applications in quantum information processing. Compared to free space, the scattering and the light-induced…

Quantum Physics · Physics 2021-12-22 Artur Skljarow , Harald Kübler , Charles S. Adams , Tilman Pfau , Robert Löw , Hadiseh Alaeian

A single four-level atom interacting with two-mode cavities is investigated. Under large detuning condition, we obtain the effective Hamiltonian which is unitary squeezing operator of two-mode fields. Employing the input-output theory, we…

Quantum Physics · Physics 2015-05-13 Ling Zhou , Qing-Xia Mu , Zhong-Ju Liu

We consider a new approach for storing quantum information by macroscopic atomic excitations of two level atomic system. We offer the original scheme of quantum cloning of optical field into the cavity polaritons containing the phase…

Quantum Physics · Physics 2007-05-23 A. P. Alodjants , S. M. Arakelian , S. N. Bagayev , I. A. Chekhonin , V. S. Egorov

Differences in the confinement of electrons and holes in quantum dots are shown to profoundly impact the magnitude of scattering with acoustic phonons in materials where crystal deformation shifts the conduction and valence band in the same…

Mesoscale and Nanoscale Physics · Physics 2013-04-03 A. Nysteen , P. Kaer , J. Mork

We report the development of quantum microscopic theory of quasi-resonant dipole-dipole interaction in the ensembles of impurity atoms imbedded into transparent dielectric and located into Fabry-Perot cavity. On the basis of the general…

Atomic Physics · Physics 2016-08-24 A. S. Kuraptsev , I. M. Sokolov

Cavities in large-scale photonic integrated circuits often suffer from a wider distribution of resonance frequencies due to fabrication errors. It is crucial to adjust the resonances of cavities using post-processing methods to minimize the…

Optics · Physics 2024-09-26 Mohit Khurana , Sahar Delfan , Zhenhuan Yi

We report on the alteration of photon emission properties of a single trapped ion coupled to a high finesse optical fiber cavity. We show that the vacuum field of the cavity can simultaneously affect the emissions in both the infrared (IR)…

Quantum Physics · Physics 2017-08-16 Hiroki Takahashi , Ezra Kassa , Costas Christoforou , Matthias Keller

Atom-cavity systems offer unique advantages for building large-scale distributed quantum computers by providing strong atom-photon coupling while allowing for high-fidelity local operations of atomic qubits. However, in prevalent schemes…

Quantum Physics · Physics 2025-06-05 Chengxi Zhang , Justin Phillips , Inder Monga , Erhan Saglamyurek , Qiming Wu , Hartmut Haeffner
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