scispace - formally typeset
Open AccessJournal ArticleDOI

Coherence generation and population transfer by stimulated Raman adiabatic passage and π pulse in a four-level ladder system

TLDR
A new scheme for achieving the complete population transfer and the optimal coherence generation between the ground state and the Rydberg state in a four-level ladder system by combining the STirAP or fractional STIRAP technique and the π pulse technique is proposed.
Abstract
We propose a new scheme for achieving the complete population transfer and the optimal coherence generation between the ground state and the Rydberg state in a four-level ladder system by combining the STIRAP or fractional STIRAP technique and the π pulse technique. We consider, in particular, two different situations where spontaneous emission from the two highest states are neglected or not. Our numerical calculations show that the time width and the delay time of the π pulse are two critical parameters for attaining the maximal population transfer and coherence generation in this scheme.

read more

Citations
More filters
Journal ArticleDOI

Ultra-short strong excitation of two-level systems

TL;DR: In this paper, a model describing the use of ultra-short strong pulses to control the population of the excited level of a two-level quantum system is presented, where an off-resonance excitation with a few cycles pulse which presents a smooth phase jump is considered.
Journal ArticleDOI

Optical dipole force on ladderlike three-level atomic systems induced by few-cycle-pulse laser fields

TL;DR: In this paper, the optical dipole force in a ladder-like three-level atomic system was investigated in the context of coherent population transfer with chirped few-cycle-pulse laser fields.
Journal ArticleDOI

Wideband two-process frequency conversion under stimulated Raman adiabatic passage via a continuum of dark intermediate states

TL;DR: In this article, the authors proposed a hybrid planar-channel waveguide configuration in which the channel waveguide is submerged within the planar region, with an aim to study two simultaneous three-wave mixing processes under stimulated Raman adiabatic passage.
Journal ArticleDOI

Trichromatic π-Pulse for Ultrafast Total Inversion of a Four-Level Ladder System

TL;DR: In this article, a numerical solution for complete population inversion in a four-level ladder system obtained by using a full π-pulse illumination scheme with resonant ultrashort phase-locked Gaussian laser pulses was presented.
Dissertation

Ultrafast quantum control of atoms and molecules : a density matrix approach

TL;DR: In this article, the authors used the density matrix (DM) theory under and beyond the rotating wave approximation (RWA) to model dynamical light-matter interaction processes, such as effective population inversion and generation of vibrational coherences.
References
More filters
Journal ArticleDOI

Observation of electromagnetically induced transparency.

TL;DR: In this paper, the authors report the first demonstration of a technique by which an optically thick medium may be rendered transparent by applying a temporally smooth coupling laser between a bound state of an atom and the upper state of the transition which is to be made transparent.
Journal ArticleDOI

Quantum information with Rydberg atoms

TL;DR: Rydberg atoms with principal quantum number $n⪢1$ have exaggerated atomic properties including dipole-dipole interactions that scale as ${n}^{4}$ and radiative lifetimes that scale at least{n}−3}$ as mentioned in this paper, and it was proposed a decade ago to implement quantum gates between neutral atom qubits.
Proceedings Article

Observation of electromagnetically induced transparency

TL;DR: The first demonstration of a technique by which an optically thick medium may be rendered transparent is reported, which results from a destructive interference of two dressed states created by applying a temporally smooth coupling laser between a bound state of an atom and the upper state of the transition which is to be made transparent.
Journal ArticleDOI

Coherent population transfer among quantum states of atoms and molecules

TL;DR: In this paper, the authors discuss the technique of stimulated Raman adiabatic passage (STIRAP), a method of using partially overlapping pulses (from pump and Stokes lasers) to produce complete population transfer between two quantum states of an atom or molecule.
Journal ArticleDOI

Coherent trapping of atomic populations.

TL;DR: A form of coherent trapping that occurs when multiple resonant laser beams are used to couple the various ground states to a common upper level is described, which prevents the extraction of the entire population.
Related Papers (5)