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Several novel methods, including magnetogenetics and magnetoelectric stimulation, use high frequency alternating magnetic fields to precisely manipulate neural activity. To quantify the behavioral effects of such interventions in a freely…

Using a microscopic theory based on the density matrix formalism we investigate quantum revivals and collapses of the charge polarization and charge current dynamics in mesoscopic rings driven by short asymmetric electromagnetic pulses. The…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. S. Moskalenko , A. Matos-Abiague , J. Berakdar

A compact Kerr-lens mode-locked thin-disk oscillator delivering 110 MW output peak power, the highest among all oscillators, is reported. A pulse train with a repetition rate of 14 MHz carries 115 fs long, 14.4 uJ pulses resulting in 202 W…

Optics · Physics 2022-04-12 Semyon Goncharov , Kilian Fritsch , Oleg Pronin

Single-shot absorption measurements have been performed using the multi-keV X-rays generated by a laser wakefield accelerator. A 200 TW laser was used to drive a laser wakefield accelerator in a mode which produced broadband electron beams…

We report on the development of a highly directional, narrow energy band, short time duration proton beam operating at high repetition rate, suitable for measurements of stopping power in high energy density plasmas as well as other…

Magnetic resonance with ensembles of electron spins is nowadays performed in frequency ranges up to 240 GHz and in corresponding magnetic fields of up to 10 T. However, experiments with single electron and nuclear spins so far only reach…

We present a scalable quantum-bus-based device for generating the entanglement on microwave photons (MPs) in distant superconducting resonators (SRs). Different from the processors in previous works with some resonators coupled to a…

Quantum Physics · Physics 2015-08-04 Ming Hua , Ming-Jie Tao , Fu-Guo Deng

In this paper I study the posibility of inducing a single-electron current by rotating a non-magnetic conducting rod with a small tunnel junction immerse in a uniform magnetic field perpendicular to the plane of motion. I show first, by…

Mesoscale and Nanoscale Physics · Physics 2011-12-09 Gabriel Gonzalez

We present a compact FPGA-based pulse sequencer and radio-frequency (RF) generator suitable for experiments with cold trapped ions and atoms. The unit is capable of outputting a pulse sequence with at least 32 TTL channels with a timing…

Instrumentation and Detectors · Physics 2015-11-16 Thaned Pruttivarasin , Hidetoshi Katori

It is expected that ion trap quantum computing can be made scalable through protocols that make use of transport of ion qubits between sub-regions within the ion trap. In this scenario, any magnetic field inhomogeneity the ion experiences…

The production of a highly-polarized positron beam via nonlinear Breit-Wheeler processes during the interaction of an ultraintense circularly polarized laser pulse with a longitudinally spin-polarized ultrarelativistic electron beam is…

Plasma Physics · Physics 2020-07-29 Yan-Fei Li , Yue-Yue Chen , Wei-Min Wang , Hua-Si Hu

Integrated photonic circuits provide a versatile toolbox of functionalities for advanced quantum optics applications. Here, we demonstrate an essential component of such a system in the form of a Purcell enhanced single-photon source based…

Mesoscale and Nanoscale Physics · Physics 2020-09-11 Łukasz Dusanowski , Dominik Köck , Eunso Shin , Soon-Hong Kwon , Christian Schneider , Sven Höfling

We use 3D simulations to demonstrate that high-quality ultra-relativistic electron bunches can be generated upon reflection of a twisted laser beam off a plasma mirror. The unique topology of the beam with a twist index $|l| = 1$ creates an…

Plasma Physics · Physics 2021-06-30 Yin Shi , David Blackman , Dan Stutman , Alexey Arefiev

Using the tilted-pulse-intensity-front scheme, we generate single-cycle terahertz (THz) pulses by optical rectification of femtosecond laser pulses in LiNbO3. In the THz generation setup, the condition that the image of the grating…

Optics · Physics 2015-05-27 H. Hirori , A. Doi , F. Blanchard , K. Tanaka

Optomechanics offers a natural way to implement synthetic dynamical gauge fields, leading to synthetic electric fields for phonons and, as a consequence, to unidirectional light transport. Here we investigate the quantum dynamics of…

Mesoscale and Nanoscale Physics · Physics 2019-10-21 Petr Zapletal , Andreas Nunnenkamp

We carry out an experimental feasibility study of a magnetic field sensor based on the kinetic inductance of the high-$T_\mathrm{c}$ superconductor yttrium barium copper oxide. We pattern thin superconducting films into radio-frequency…

Instrumentation and Detectors · Physics 2019-04-17 V. Vesterinen , S. Ruffieux , A. Kalabukhov , H. Sipola , M. Kiviranta , D. Winkler , J. F. Schneiderman , J. Hassel

We propose a method for the optimal time-controlled generation of entangled itinerant particles, using on-demand sources in a conductor in the quantum Hall regime. This entanglement pump is realized by applying periodic, tailored voltage…

Mesoscale and Nanoscale Physics · Physics 2012-02-28 Y. Sherkunov , N. d'Ambrumenil , P. Samuelsson , M. Buttiker

We have fabricated a custom cryogenic Complementary Metal-Oxide-Semiconductor (CMOS) integrated circuit that has a higher measurement bandwidth compared with conventional room temperature electronics. This allowed implementing single shot…

Electron acceleration has been optimized based on 3D PIC simulations of a short laser pulse interacting with low-density plasma targets to find the pulse propagation regime that maximizes the charge of high-energy electron bunches. This…

Plasma Physics · Physics 2020-01-08 M. G. Lobok , A. V. Brantov , V. Yu. Bychenkov

Gain-switching laser diodes is a well-established technique for generating optical pulses with random phases, where the quantum randomness arises naturally from spontaneous emission. However, the maximum switching rate is limited by phase…

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