• Corpus ID: 248811538

Multiple-Photon Resonance Enabled Quantum Interference in Emission Spectroscopy of N_2^+

  title={Multiple-Photon Resonance Enabled Quantum Interference in Emission Spectroscopy of N\_2^+},
  author={X. Zhang and Qiwen Lu and Yalei Zhu and Jing Zhao and Rostyslav Danylo and Mingwei Lei and Hongbing Jiang and Chengyin Wu and Zhedong Zhang and A. Houard and Vladimir Tikhonchuk and Andr{\'e} Mysyrowicz and Qihuang Gong and Songlin Zhuang and Zengxiu Zhao and Yi Liu},
: Quantum interference occurs frequently in the interaction of laser radiation with materials, leading to a series of fascinating effects such as lasing without inversion, electromagnetically induced transparency, Fano resonance, etc . Such quantum interference effects are mostly enabled by single-photon resonance with transitions in the matter, regardless of how many optical frequencies are involved. Here, we demonstrate quantum interference driven by multiple photons in the emission… 

Figures from this paper


Photon retention in coherently excited nitrogen ions
Generation of optical Schrödinger cat states in intense laser–matter interactions
The physics of intense laser–matter interactions1,2 is described by treating the light pulses classically, anticipating no need to access optical measurements beyond the classical limit. However, the
Amplification of intense light fields by nearly free electrons
This work demonstrates that these unusual states of neutral atoms can be exploited to create a general ultrafast gain mechanism during laser filamentation, and shows that these states exist in rare gases, at and above atmospheric pressure, where they can act as a gain medium during Laser filamentation.
Quantum Optical Signatures in a Strong Laser Pulse after Interaction with Semiconductors.
It is demonstrated that the subcycle electronic response in a strongly driven semiconductor crystal is imprinted in the quantum state of the driving field resulting in nonclassical light states carrying the information of the interaction.
Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling
This work adopts few-cycle laser pulses, and experimentally demonstrates that the lasing at 391 nm occurs instantaneously after N2+ is produced, shedding light on the controversy over the mechanism of the air lasing.
Sub-cycle coherent control of ionic dynamics via transient ionization injection
Ultrafast ionization of atoms or molecules by intense laser pulses creates extremely non-stationary ionic states. This process triggers attosecond correlated electron-hole dynamics and subsequent
Theoretical analysis of the coherence-brightened laser in air
We present a detailed theoretical study of a recent experiment [A. J. Traverso et al., Proc. Natl. Acad. Sci. USA 109, 15185 (2012)] in which a laserlike source is created in air by pumping with a
Intense few-cycle laser fields: Frontiers of nonlinear optics
The rise time of intense radiation determines the maximum field strength atoms can be exposed to before their polarizability dramatically drops due to the detachment of an outer electron. Recent
Attosecond dynamics through a Fano resonance: Monitoring the birth of a photoelectron
Using spectrally resolved electron interferometry, the amplitude and phase of a photoelectron wave packet created through a Fano autoionizing resonance in helium is measured, raising prospects for detailed investigations of ultrafast photoemission dynamics governed by electron correlation, as well as coherent control over structured electron wave packets.
Theory of high-harmonic generation by low-frequency laser fields.
A simple, analytic, and fully quantum theory of high-harmonic generation by low-frequency laser fields is presented and the exact quantum-mechanical formula for the harmonic cutoff that differs from the phenomenological law Ip+3.17Up is presented.