The attoclock and the tunneling time debate
Anatoli S Kheifets
Abstract
Abstract Attosecond angular streaking, also known as the ‘attoclock’, employs a short elliptically polarized laser pulse to tunnel ionize an electron from an atom or a molecule and to put a time stamp on this process by deflecting the photoelectron in the angular spatial direction. This deflection can be used to evaluate the time the tunneling electron spends under the classically inaccessible barrier and to determine whether this time is finite. In this review, we examine the latest experimental and theoretical findings and present a comprehensive set of evidence supporting the zero tunneling time scenario.
Topics & Concepts
Quantum tunnellingPhysicsElectronDeflection (physics)Atomic physicsLaserIonizationTunnel effectAtom (system on chip)Elliptical polarizationScanning tunneling microscopePulse (music)Tunnel ionizationOpticsRectangular potential barrierQuantum mechanicsLaser-Matter Interactions and ApplicationsLaser-Plasma Interactions and DiagnosticsQuantum chaos and dynamical systems