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Time-frequency entangled photons constitute an important resource for a plethora of applications across the diverse quantum technology landscape. Thus, efficient and tunable setups for the generation of entangled photons are requisite for…

Quantum Physics · Physics 2022-11-30 Eugene Stolyarov

We present an event-by-event study of photon production in early stage of high energy nuclear collisions, where the system is dominant by highly occupied of gluons and initialized by McLerran-Venugopalan model. The photons are produced…

High Energy Physics - Phenomenology · Physics 2023-10-05 Moran Jia , Huixia Li , Defu Hou

Spontaneously emitted photons are entangled with the electronic and nuclear degrees of freedom of the emitting atom, so interference and measurement of these photons can entangle separate matter-based quantum systems as a resource for…

We present an effective-Lagrangian description for forward-angle K+ Lambda photoproduction from the proton, valid for photon lab energies from threshold up to 16 GeV. The high-energy part of the amplitude is modeled in terms of t-channel…

Nuclear Theory · Physics 2008-11-26 T. Corthals , J. Ryckebusch , T. Van Cauteren

Quantum mechanics is central to coherent photoproduction in ultra-peripheral collisions (UPCs). This writeup will discuss some surprising aspects of UPCs that stem from these quantum mechanical roots. The Good-Walker (GW) paradigm, which…

High Energy Physics - Phenomenology · Physics 2024-04-09 Spencer R. Klein

An electron-multiplying charge-coupled device (EMCCD) is often used for taking images with space telescopes and other devices. Photons hit the pixels and photo-electrons are created, and these are multiplied via impact ionization as they…

Instrumentation and Methods for Astrophysics · Physics 2025-03-25 Kevin Ludwick

We report a tunable single-photon source based on a single trapped ion. Employing spontaneous Raman scattering and in-vacuum optics with large numerical aperture, single photons are efficiently created with controlled temporal shape and…

Quantum Physics · Physics 2015-05-13 M. Almendros , J. Huwer , N. Piro , F. Rohde , C. Schuck , M. Hennrich , F. Dubin , J. Eschner

High-order harmonic generation (HHG) is investigated theoretically in the over-the-barrier ionization (OBI) regime revealing the strong signature of interference between two separately ionized and separately propagating free wave packets of…

The third-order non-linearity of silicon gives rise to a spontaneous four-wave mixing process in which correlated photon pairs are generated. Sources based on this effect can be used for quantum computation and cryptography, and can in…

Optics · Physics 2016-04-20 Momchil Minkov , Vincenzo Savona

We analyze several implementations of all-optical single-photon transistors (SPTs) operating in the continuous-wave (cw) regime, as presented in the companion paper [Phys. Rev. A 113, L011701 (2026)]. The devices rely on ensembles of…

Quantum Physics · Physics 2026-01-26 Iason Tsiamis , Oleksandr Kyriienko , Anders S. Sørensen

We present a quantum random number generator (QRNG) based on the random outcomes inherent in projective measurements on a superposition of quantum states of light. Firstly, we use multiplexed holograms encoded on a spatial light modulator…

Quantum Physics · Physics 2020-09-30 Michael de Oliveira , Nicholas Bornman , Andrew Forbes

We describe a scheme for the efficient generation of microwave photon pairs by parametric downconversion in a superconducting transmission line resonator coupled to a Cooper pair box serving as an artificial atom. By properly tuning the…

Mesoscale and Nanoscale Physics · Physics 2008-07-22 Florian Marquardt

In order to implement fault-tolerant quantum computation, entanglement generation with low error probability and high success probability is required. We have proposed the use of squeezed coherent light as a probe to generate entanglement…

Quantum Physics · Physics 2016-03-23 Fumiaki Matsuoka , Akihisa Tomita , Atsushi Okamoto

In this paper, we optimize photon blockade in a cavity magnomechanical system using feedback by introducing optimized values for the phase and magnetic field coupling strength at each drive frequency. It is shown that the computed values…

Quantum Physics · Physics 2025-01-07 Mounes Eslami , Kurosh Javidan

We propose a scheme for generation of continuous-wave THz radiation. The scheme requires a medium where three discrete states in a $\Lambda $ configuration can be selected, with the THz-frequency transition between the two lower metastable…

Quantum Physics · Physics 2009-10-31 E. A. Korsunsky , D. V. Kosachiov

We report the generation of high-purity twin photon pairs through cavity-enhanced non-degenerate four-wave mixing (FWM) in a high-Q silicon microdisk resonator. Twin photon pairs are created within the same cavity mode and are consequently…

Optics · Physics 2015-09-01 Steven Rogers , Xiyuan Lu , Wei C. Jiang , Qiang Lin

Quantum pulsed second-subharmonic generation in a planar waveguide with a small periodic corrugation at the surface is studied. Back-scattering of the interacting fields on the corrugation enhances the nonlinear interaction giving larger…

Optics · Physics 2015-06-12 Jan Perina

We show how one can deterministically generate photonic matrix product states with high bond and physical dimensions with an atomic array if one has access to a Rydberg-blockade mechanism. We develop both a quantum gate and an optimal…

Quantum Physics · Physics 2021-04-21 Zhi-Yuan Wei , Daniel Malz , Alejandro González-Tudela , J. Ignacio Cirac

We explore a novel process in the early Universe in which thermalized photons are converted into gravitons in the presence of strong primordial magnetic fields. It is found that the frequency of generated gravitational waves (GWs) is…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-19 Tomohiro Fujita , Kohei Kamada , Yuichiro Nakai

We study the Markovian and Non-Markovian dynamics in a giant atom system which couples to a coupled resonator waveguide (CRW) via two distant sites. Under certain conditions, we find that the giant atom population can exhibit an oscillating…

Quantum Physics · Physics 2023-07-13 Xiaojun Zhang , Chengge Liu , Zhirui Gong , Zhihai Wang
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