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We report on a method of light-shift engineering where an auxiliary laser is used to tune the atomic transition frequency. The technique is used to selectively load a specific region of an optical lattice. The results are explained by…

Atomic Physics · Physics 2009-11-11 P. F. Griffin , K. J. Weatherill , S. G. MacLeod , R. M. Potvliege , C. S. Adams

This work reports a fully guided setup for single-mode squeezing generation on integrated titanium-indiffused periodically poled nonlinear resonators. A continuous wave laser beam is delivered and the squeezed field is collected by…

Laser-driven plasma wakefields can provide hundreds of MeV electron beam in mm-range distances potentially shrinking the dimension of the actual particle accelerators. The plasma density plays a fundamental role in the control and stability…

Generative modeling of 3D shapes has become an important problem due to its relevance to many applications across Computer Vision, Graphics, and VR. In this paper we build upon recently introduced 3D mesh-convolutional Variational…

Machine Learning · Computer Science 2019-06-11 Jake Levinson , Avneesh Sud , Ameesh Makadia

We use Bayesian optimization in combination with three-dimensional particle-in-cell simulations to determine the optimal laser and plasma parameters that, for a given laser pulse energy, maximize the cut-off energy of an electron beam…

Plasma Physics · Physics 2025-09-16 P. Valenta , T. Zh. Esirkepov , J. D. Ludwig , S. C. Wilks , S. V. Bulanov

Identifying phases and analyzing the stability of dynamic states are ubiquitous and important problems which appear in various physical systems. Nonetheless, drawing a phase diagram in high-dimensional and large parameter spaces has…

Attosecond science promises to reveal the most fundamental electronic dynamics occurring in matter and it can develop further by meeting two linked technological goals related to high-order harmonic sources: higher photon flux (permitting…

We propose a phase space method to propagate a quantum wavepacket driven by a strong external field. The method employs the so-called biorthogonal von Neumann basis recently introduced for the calculation of the energy eigenstates of…

Atomic Physics · Physics 2015-06-05 Norio Takemoto , Asaf Shimshovitz , David J. Tannor

Achieving precise control of light intensity in 3D volumes is highly in demand in many applications in optics. Various wavefront shaping techniques have been utilized to reconstruct a target amplitude profile within a 3D space. However,…

Recent progress in coherent quantum interactions between free-electron pulses and laser-induced near-field light have revolutionized electron wavepacket shaping. Building on these advancements, we numerically explore the potential of…

Optics · Physics 2023-08-30 Fatemeh Chahshouri , Nahid Talebi

A potential weakness of topological waveguides is that they act on a fixed narrow band of frequencies. However, by 3D printing samples from a photo-responsive polymer, we can obtain a device whose operating frequency can be fine-tuned…

Applied Physics · Physics 2024-08-20 G. J. Chaplain , A. S. Gliozzi , B. Davies , D. Urban , E. Descrovi , F. Bosia , R. V. Craster

Theoretical studies have been made into the relativistic drive bunch generation of a wakefield in a cylindrical waveguide filled with a transversely inhomogeneous plasma. According to the model used, the transversely inhomogeneous plasma is…

Accelerator Physics · Physics 2025-06-23 K. V. Galaydych , P. I. Markov , G. V. Sotnikov

Broadband microwave waveforms with programmable chirp shapes are captivating in numerous practical applications. Compared with electronic technology, photonic-assisted solutions exhibit excellent performance in bandwidth and flexibility,…

The propagation of wave fields and their interactions with matter are important for established and emerging fields in optical sciences. Efficient methods for predicting such behaviour have been employed routinely for coherent sources.…

A new method capable of capturing coherent electric field structures propagating at nearly the speed of light in plasma with a time resolution as small as a few femtoseconds is proposed. This method uses a few femtoseconds long relativistic…

Plasma Physics · Physics 2016-10-19 C. J. Zhang , J. F. Hua , X. L. Xu , F. Li , C. -H. Pai , Y. Wan , Y. P. Wu , Y. Q. Gu , W. B. Mori , C. Joshi , W. Lu

High penetration of residential photovoltaic (PV) in low-voltage distribution networks (LVDN) makes the unbalance issue more sever due to the asymmetry of generation/load characteristic in different phases, and may lead to infeasible…

Optimization and Control · Mathematics 2019-11-06 Bin Liu , Ke Meng , Peter K. C. Wong , Zhao Yang Dong , Cuo Zhang , Bo Wang , Tian Ting , Qu Qi

One of the most robust methods, demonstrated up to date, of accelerating electron beams by laser-plasma sources is the utilization of plasma channels generated by the capillary discharges. These channels, i.e., plasma columns with a minimum…

Beam shaping - the ability to engineer the phase and the amplitude of massive and massless particles - has long interested scientists working on communication, imaging and the foundations of quantum mechanics. In light optics, the shaping…

We suggest a novel method for injection of electrons into the acceleration phase of particle accelerators, producing low emittance beams appropriate even for the demanding high energy Linear Collider specifications. In this paper we work…

Accelerator Physics · Physics 2008-11-26 M. Kando , Y. Fukuda , H. Kotaki , J. Koga , S. V. Bulanov , T. Tajima , A. Chao , R. Pitthan , K. -P. Schuler , A. G. Zhidkov , K. Nemoto