Quantum Limitation to the Coherent Emission of Accelerated Charges

Abstract

Accelerated charges emit electromagnetic radiation. According to classical electrodynamics if the charges move along sufficiently close trajectories they emit coherently, i.e., their emitted energy scales quadratically with their number rather than linearly. By investigating the emission by a two-electron wave packet in the presence of an electromagnetic plane wave within strong-field QED, we show that quantum effects deteriorate the coherence predicted by classical electrodynamics even if the typical quantum nonlinearity parameter of the system is much smaller than unity. We explain this result by observing that coherence effects are also controlled by a new quantum parameter which relates the recoil undergone by the electron with the width of its wave packet in momentum space.

6 + 3 SM pages, 3 figures

References in corpus (12)

• Experimental evidence of radiation reaction in the collision of a high-intensity laser pulse with a laser-wakefield accelerated electron beam
• Nonlinear Compton scattering in ultra-short laser pulses
• Non-Linear Compton Scattering of Ultrashort and Ultraintense Laser Pulses
• Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme
• Attosecond Control of Electron Beams at Dielectric and Absorbing Membranes
• Exact classical and quantum dynamics in background electromagnetic fields
• First-order strong-field QED processes in a tightly focused laser beam
• Analytical tools for investigating strong-field QED processes in tightly focused laser fields
• Global phase and frequency comb structures in nonlinear Compton and Thomson scattering
• Superintegrable relativistic systems in spacetime-dependent background fields
• Pulse length of ultracold electron bunches extracted from a laser cooled gas
• Laser pulse-shape dependence of Compton scattering

Cited by in corpus (18)

• Advances in QED with intense background fields
• Single and double nonlinear Compton scattering
• Super- and subradiance by entangled free particles
• Unveiling the transverse formation length of nonlinear Compton scattering
• One-loop vertex correction in a plane wave
• Non-linear quantum effects in electromagnetic radiation of a vortex electron
• WKB Electron Wave Functions in a Tightly Focused Laser Beam
• Effects of the transverse coherence length in relativistic collisions
• Toward the observation of interference effects in nonlinear Compton scattering
• First-order strong-field QED processes including the damping of particles states
• Light scalars: coherent nonlinear Thomson scattering and detection
• Nonlinear Compton scattering and nonlinear Breit-Wheeler pair production including the damping of particle states
• Transition radiation from a Dirac particle wave packet traversing a mirror
• The electron mass shift in an intense plane wave
• Coherent radiation of photons by particle wave packets
• Coherent frequency combs from electrons colliding with a laser pulse
• Radiation from Dirac fermions caused by a projective measurement
• Coherently enhanced radiation friction in laser-plasma collisions