12 citations · 31 across the 14 of their papers we have counts for
14 papers
Single-Shot Intensity-Correlation Diffractive X-ray Imaging of ICF Plasmas
Kenan Qu, Daniel Bhatti, Nathaniel J. Fisch
X-ray radiography of inertial confinement fusion plasmas is currently limited to several-micron resolution by geometric blur, diffraction, and photon-throughput tradeoffs. We propo…
Detecting Solenoidal Plasma Turbulence via Laser Polarization Rotation
Kenan Qu, Nathaniel J. Fisch
Recent theoretical studies suggest that solenoidal turbulence can significantly enhance fusion reactivity, yet no standard diagnostic exists to directly measure these solenoidal fl…
Generalized Time-Coarse Graining via an Operator Cumulant Expansion
Leon Bello, Tal Rubin, Wentao Fan +2
We introduce a general framework for deriving effective dynamics from arbitrary time-dependent generators, based on a systematic operator cumulant expansion. Unlike traditional app…
Ultra-strong Quantum Squeezing Mediated by Plasma Waves
Kenan Qu, Nathaniel J. Fisch
Quantum squeezed states enable precision measurements beyond the standard quantum limit, but conventional solid-state media fundamentally limit pump intensities to the ionization t…
Designing a Validation Experiment for Radio Frequency Condensation
Lanke Fu, E. Litvinova Mitra, R. Nies +18
Theoretical studies have suggested that nonlinear effects can lead to "radio frequency condensation", which coalesces RF power deposition and driven current near the center of a ma…
Producing entangled photon pairs and quantum squeezed states in plasmas
Kenan Qu, Nathaniel J. Fisch
Plasma is capable of mediating the conversion of two pump photons into two different photons through a relativistic four-wave mixing nonlinearity. Spontaneously created photon pair…
On parallel laser beam merger in plasmas
K. V. Lezhnin, Kenan Qu, N. J. Fisch +1
Self-focusing instability is a well-known phenomenon of nonlinear optics, which is of great importance in the field of laser-plasma interactions. Self-focusing instability leads to…
Radiation Reaction Kinetics and Collective QED Signatures
Alec Griffith, Kenan Qu, Nathaniel J. Fisch
Observing collective effects originating from the interplay between quantum electrodynamics and plasma physics might be achieved in upcoming experiments. In particular, the generat…
Simulations of Non-Integer Upconversion in Resonant Six-Wave Scattering
Alec Griffith, Kenan Qu, Nathaniel J. Fisch
Resonant upconversion through a sixth order relativistic nonlinearity resulting in a unique resonance was recently proposed [V. M. Malkin and N. J. Fisch, Physical Review E 108, 04…
Pair filamentation and laser scattering in beam-driven QED cascades
Kenan Qu, Alec Griffith, Nathaniel J. Fisch
We report the observation of longitudinal filamentation of an electron-positron pair plasma in a beam-driven QED cascade. The filaments are created in the "pair-reflection" regime,…
Modulation-Slippage Tradeoff in Resonant Four-Wave Upconversion
Alec Griffith, Kenan Qu, Nathaniel J. Fisch
Following up on a proposal to use four-wave mixing in an underdense plasma at mildly relativistic laser intensities to produce vastly more energetic x-ray pulses [V. M. Malkin and…
Suppression of power losses during laser pulse propagation in underdense plasma slab
K. V. Lezhnin, K. Qu, N. J. Fisch
For current state-of-the-art terawatt lasers, the primary laser scattering mechanisms in plasma include Forward Raman Scattering (FRS), excitation of plasma waves, and the self-mod…
Generation of Localized Lower-Hybrid Current Drive By Temperature Perturbations
S. J. Frank, A. H. Reiman, N. J. Fisch +1
Despite high demonstrated efficiency, lower-hybrid current drive (LHCD) has not been considered localized enough for neoclassical tearing mode (NTM) stabilization in tokamaks. This…
On extreme points of the diffusion polytope
M. J. Hay, J. Schiff, N. J. Fisch
We consider a class of diffusion problems defined on simple graphs in which the populations at any two vertices may be averaged if they are connected by an edge. The diffusion poly…