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The formation of $e^\pm$ plasmas within pulsar magnetospheres through quantum electrodynamics (QED) cascades in vacuum gaps is widely acknowledged. This paper aims to investigate the effect of photon polarization during the QED cascade…

High Energy Astrophysical Phenomena · Physics 2024-04-30 Huai-Hang Song , Matteo Tamburini

In many problems, the scattering amplitudes of weak coherent pulse are almost equivalent to the ones of single propagating photon. We thoroughly compare the scattering of: (i) short microwave coherent pulse from rf generator and (ii)…

We investigate theoretically the model of a cavity-quantum-electrodynamics (QED) system that consists of two two-level atoms coupled to a single-mode cavity in the weak coupling regime, where the system is driven by quantum light. The…

Quantum Physics · Physics 2018-11-21 Qian Bin , Xin-You Lü , Shang-Wu Bin , Ying Wu

We theoretically investigate the optical response of a quantum dot, embedded in a microcavity and incoherently excited by pulsed pumping. The exciton and biexciton transition are off-resonantly coupled with the left- and right-polarized…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 J. I. Perea , F. Troiani , C. Tejedor

Relativistic, polarized pair-photon fireballs are central to understand the microscopic energy transfer of high-energy astrophysical outflows, yet generating an overdense fireball in the laboratory, especially via an ultraintense laser,…

Plasma Physics · Physics 2026-03-30 Zhen-Ke Dou , Qian Zhao , Feng Wan , Chong Lv , Bing Guo , Jian-Xing Li

Cavity quantum electrodynamics (QED) studies the interaction between resonator-confined radiation and natural atoms or other formally equivalent quantum excitations, under conditions where the quantum nature of photons is relevant.…

We evaluate several basic electrodynamic processes as modified by the presence of a very strong magnetic field, exceeding $B_{\rm Q} \equiv m^2/e = 4.4\times 10^{13}$ G. These results are needed to build models of dissipative phenomena…

High Energy Astrophysical Phenomena · Physics 2020-03-31 Alexander Kostenko , Christopher Thompson

According to quantum electrodynamics (QED), a strong external field can make the vacuum state decay producing electron-positron pairs. Here we investigate emission of soft photons which accompanies a nonperturbative process of pair…

High Energy Physics - Phenomenology · Physics 2022-06-22 I. A. Aleksandrov , A. Di Piazza , G. Plunien , V. M. Shabaev

Based on the physical process of two-atom simultaneous excitation by single photon, we proposed a frequency dividing scheme in superconducting quantum circuit. The frequency division for a microwave photon consists of two quantum processes:…

Quantum Physics · Physics 2025-05-01 Hui Wang , Chih-Yao Shih , Ching-Yeh Chen , Yan-Jun Zhao , Xun-Wei Xu , Jaw-Shen Tsai

We consider a system of ultracold atoms in an optical lattice as a quantum simulator for electron-positron pair production in quantum electrodynamics (QED). For a setup in one spatial dimension, we investigate the nonequilibrium phenomenon…

Quantum Gases · Physics 2016-08-09 V. Kasper , F. Hebenstreit , M. Oberthaler , J. Berges

We propose and analyze a scheme for manipulating the propagation of single photon pulses with two polarization components in a Rydberg atomic gas via double electromagnetically induced transparency. We show that by storing a gate photon in…

Quantum Physics · Physics 2024-01-15 Ou Yao , Huang Guoxiang

We study the exclusive electroproduction of a photon pair in the kinematical regime where the diphoton invariant mass is large and where the nucleon flies almost in its original direction. We discuss the relative importance of the QCD…

High Energy Physics - Phenomenology · Physics 2020-07-01 A. Pedrak , B. Pire , L. Szymanowski , J. Wagner

We study the zero-temperature phase diagram of a one-dimensional array of QED cavities where, besides the single-photon hopping, an additional coupling between neighboring cavities is mediated by an N-type four-level system. By varying the…

Quantum Physics · Physics 2015-03-12 Jiasen Jin , Rosario Fazio , Davide Rossini

With the help of the Seiberg-Witten map, one can obtain an effective action of a deformed QED from a noncommutative QED. Starting from the deformed QED, we investigate the propagation of photons in the background of electromagnetic field,…

High Energy Physics - Theory · Physics 2009-11-07 Rong-Gen Cai

How are two-body scattering and the resulting collective phenomena affected by preparing the mediator of interactions in different quantum states? This question has recently become experimentally relevant in a specific non-relativistic…

Quantum Physics · Physics 2025-10-09 Ahana Chakraborty , Michele Pini , Martina S. Zündel , Francesco Piazza

A quantum dot can be used as a source of one- and two-photon states and of polarisation entangled photon pairs. The emission of such states is investigated from the point of view of frequency-resolved two-photon correlations. These follow…

Mesoscale and Nanoscale Physics · Physics 2014-03-06 Elena del Valle

A theoretical description of radiation-matter coupling for semiconductor-based photonic crystal slabs is presented, in which quantum wells are embedded within the waveguide core layer. A full quantum theory is developed, by quantizing both…

Soft Condensed Matter · Physics 2009-11-13 D. Gerace , L. C. Andreani

By modeling the coupling of multiple superconducting qubits to a single cavity in the circuit-quantum electrodynamics (QED) framework we find that it should be possible to observe superradiance and phase multistability using currently…

Quantum Physics · Physics 2015-05-19 Michael Delanty , Stojan Rebic , Jason Twamley

Similar to superconducting circuit quantum electrodynamics (cQED), the development of a photonic analog--specifically, photonic circuit cQED--has become a major focus in integrated quantum photonics. Current solid-state cQED devices,…

Quantum Physics · Physics 2025-04-08 Xudong Wang , Yifan Zhu , Xiuqi Zhang , Yuanhao Qin , Bowen Chen , Yang Chen , Yongheng Huo , Jiaxiang Zhang , Xin Ou