Control of Four-Level Quantum Coherence via Discrete Spectral Shaping of an Optical Frequency Comb

Abstract

We present an experiment demonstrating high-resolution coherent control of a four-level atomic system in a closed (diamond) type configuration. A femtosecond frequency comb is used to establish phase coherence between a pair of two-photon transitions in cold Rb atoms. By controlling the spectral phase of the frequency comb we demonstrate the optical phase sensitive response of the diamond system. The high-resolution state selectivity of the comb is used to demonstrate the importance of the signs of dipole moment matrix elements in this type of closed-loop excitation. Finally, the pulse shape is optimized resulting in a 256% increase in the two-photon transition rate by forcing constructive interference between the mode pairs detuned from an intermediate resonance.

arXiv comment5 pages, 4 figures Submitted to Physical Review Letters

References in corpus (6)

• Transform-limited pulses are not optimal for resonant multiphoton transitions
• Phase-dependent interaction in a 4-level atomic configuration
• Coherent control with shaped femtosecond laser pulses applied to ultracold molecules
• Precise Control of Molecular Dynamics with a Femtosecond Frequency Comb - A Weak Field Route to Strong Field Coherent Control
• High resolution atomic coherent control via spectral phase manipulation of an optical frequency comb
• Phase correlation of laser waves with arbitrary frequency spacing

Cited by in corpus (19)

• Entanglement of Atomic Qubits using an Optical Frequency Comb
• Piecewise adiabatic population transfer in a molecule via a wave packet
• Quantum Control of Qubits and Atomic Motion Using Ultrafast Laser Pulses
• Spatial and Spectral Coherent Control with Frequency Combs
• Population inversion in hyperfine states of Rb with a single nanosecond chirped pulse in the framework of a 4-level system
• Quantum Coherence Effects in Four-level Diamond Atomic System
• Implementation of a single femtosecond optical frequency comb for rovibrational cooling
• An atom interferometer driven by a picosecond frequency comb
• Observation of Rb Two-Photon Absorption Directly Excited by an Erbium-Fiber-Laser-Based Optical Frequency Comb via Spectral Control
• Two-photon transitions driven by a combination of diode and femtosecond lasers
• The dynamics of three-level $\Lambda$-type system driven by the trains of ultrashort laser pulses
• Impact of Decoherence on Internal State Cooling using Optical Frequency Combs
• Creating a switchable optical cavity with controllable quantum-state mapping between two modes
• MUB-like structures and tomographic reconstruction for N-ququart systems
• Doppler-free coherent-control spectroscopy with a colliding pair of shaped pulses
• Arbitrary vector beam generation in semiconductor quantum dots
• Light-induced states in the transient-absorption spectrum of a periodically pumped strong-field-excited system
• High and uniform coherence creation in Doppler broadened double lambda-like atomic system by a train of femtosecond optical pulses
• Quantum state of a frequency comb