Quantum Optical Aspects of High-Harmonic Generation

Quantum optical signatures in strong-field laser physics: Infrared photon counting in high-order-harmonic generation

We analytically describe the strong-field light-electron interaction using a quantized coherent laser state with arbitrary photon number. We obtain a light-electron wave function which is a closed-form solution of the time-dependent Schrödinger equation (TDSE). This wave function provides information about the quantum optical features of the interaction not accessible by semi-classical theories...

Quantum Optimal Control of High-Harmonic Generation from Molecular Systems

Every scale needs right tools and devices to enable researchers to study and even control phenomena in that area. Given the fact that many fundamental phenomena in condensed matter physics and chemistry, such as chemical bonding or charge transfer, are happening on attosecond scale has encouraged researchers to look for essential tools for inspecting this region. At the present time, high-harmo...

High speed optical quantum random number generation.

We present a fully integrated, ready-for-use quantum random number generator (QRNG) whose stochastic model is based on the randomness of detecting single photons in attenuated light. We show that often annoying deadtime effects associated with photomultiplier tubes (PMT) can be utilized to avoid postprocessing for bias or correlations. The random numbers directly delivered to a PC, generated at...

Quantum-classical correspondence in circularly polarized high harmonic generation

Full quantum trajectories resolved high-order harmonic generation.

We use a carrier-envelope-phase stabilized sub-2-cycle laser pulse to generate high-order harmonics and study how the two-dimensional spectrum of harmonics, with the resolutions in temporal frequency and spatial frequency, is shaped by the laser phase. An arrowlike spectrum obtained experimentally when the gas cell is located in front of the laser focus point shows a resolution of full quantum ...