Efficient Coherent Population Transfer among Three States in NO Molecules by Stark-Chirped Rapid Adiabatic Passage

Abstract

We present the experimental demonstration of a novel, efficient, and selective technique to prepare population inversion. The technique is an extension of Stark-chirped rapid adiabatic passage (SCRAP), i.e., SCRAP among three states. In this process a Lambda-type quantum system is driven by two laser pulses, the pump and Stokes pulses, which are appropriately detuned from transition frequencies. A third laser pulse induces a dynamic Stark shift in the upper energy level, and the timing of all three pulses is controlled in order to prepare population inversion between the two lower states in the Lambda-type level scheme. Our data on population transfer in nitric oxide (NO) molecules clearly show that SCRAP among three states provides an advantageous alternative to such techniques as stimulated Raman adiabatic passage.

Optical preparation of H2 rovibrational levels with almost complete population transfer

“…One way to overcome this problem is to transfer population between quantum states using adiabatic passage. Previously stimulated Raman adiabatic passage (STIRAP) [6][7][8][9] and Starkchirped rapid adiabatic passage (SCRAP) [10][11][12][13][14][15] processes were utilized to transfer nearly the complete population between an initial and a target quantum state. However, for the purpose of transferring population between two rovibrational levels within the ground electronic surface of a molecule, both these techniques require a suitable resonant, or near resonant intermediate vibronic state connecting the initial and final (target) rovibrational levels.…”

Simultaneous control of optical dipole force and coherence creation by super-Gaussian femtosecond pulses inΛ-like atomic systems

“…Today, coherent control techniques are widely used in the fields of robust quantum dot excitation generation [18], controllable coherent population transfer in superconducting qubits [19], atomic interferometry [20,21], high precession spectroscopy [22,23], quantum computing [24,25], quantum information processing [26,27], ultrafast optical switching [28][29][30] and population transfer in four level atoms [31]. In the last two or three decades or so, many efficient schemes such as stimulated Raman adiabatic passage (STIRAP), Raman chirped adiabatic passage (RCAP) and adiabatic rapid passage (ARP) for controlling the population transfer between the quantum states of atoms and molecules has opened new routes for controlling the various atomic and molecular processes [1,2,[32][33][34]. In this context, another extremely important and relevant topic of interest is the creation of coherent superposition of atomic or molecular quantum states or coherence.…”

Stark-Chirped Rapid Adiabatic Passage in a Multilevel Atom

“…The population transfer is efficient if the population of an intermediate state is minimized by the proper laser pulse timing and by adiabatic evolution of the states. This technique was experimentally used for preparation of population inversion in NO molecules [4,5].…”