Creation of a coherent superposition of quantum states by a single frequency-chirped short laser pulse

Djotyan, G. P.; Bakos, J. S.; Demeter, G.; Sörlei, Zs.; Szigeti, J.; Dzsotjan, D.

doi:10.1364/josab.25.000166

Cited by 17 publications

(14 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the frequency chirp they are not sensitive to the resonance conditions (including the two-photon resonance condition) and allow transition of the populations between the metastable states of a multilevel atom without considerable excitation of the atom [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

“…It results in complete transfer of the atomic population from the initially populated ground state to the other initially empty ground state without considerable population of the excited state. A similar scheme with a single FC pulse but in a tripod-type atom was used in [32] to transfer the atomic populations between the three metastable states and to create a coherent superposition of these states without considerable excitation of the atom. Note that while the scheme proposed in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we generalize the scheme proposed in Refs. [31,32] by including three FC laser pulses (instead of a single one) and thus, increasing the potential to control atomic populations and created coherences. No time delay between the pulses is needed for the scheme under consideration that reveals an additional dissimilarity with the STIRAP-based schemes.…”

Section: Introductionmentioning

confidence: 99%

“…In the proposed scheme, three FC laser pulses with two of them in Raman resonance and the third one out of Raman resonance perform coherent manipulation of the atomic populations and coherences. Similarly to the case of a single FC laser pulse (see [31,32]) the proposed scheme allows suppressing of the excitation of the atom to minimize the decoherence effects caused by the spontaneous decay of the excited states.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Creation of coherent superposition states in inhomogeneously broadened media with relaxation

et al. 2011

View full text Add to dashboard Cite

We propose and analyze a scheme for "on demand" creation of coherent superposition of meta-stable states in a tripod-structured atom using frequency-chirped laser pulses. Negligible excitation of the atoms during the creation of the superposition states is a priority in our consideration.The underlying physics of the scheme is explained using the formalism of adiabatic states. By numerically solving master equation for the density matrix operator, we analyze the influence of the spontaneous decay and transverse relaxation on the efficiency of the creation of superposition states.We show that the proposed scheme is robust against small-to-medium variations of the parameters of the laser pulses. We provide a detailed analysis of the effect of the inhomogeneous (Doppler-) broadening on the efficiency of the coherence creation and show that the proposed scheme may be equally efficient in both homogeneously and Doppler-broadened media. 32.80 Qk, 42.50 Gy

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Creation of coherent superposition states in inhomogeneously broadened media with relaxation

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Creation of coherent superposition of quantum states plays key role in numerous applications of quantum and nonlinear optics. While generation of coherence between lower (ground) states of an atomic system is an established technique (see e.g [1][2][3][4].) less attention, it appears, has been paid to robust creation of coherent superposition between the ground and excited states.…”

Section: Introductionmentioning

confidence: 99%

An extremely robust strong-field control of atomic coherence

Djotyan¹,

Sandor²,

Bakos³

et al. 2011

Opt. Express

Self Cite

View full text Add to dashboard Cite

We propose and analyze a scheme for adiabatic creation of maximum coherence of 0.5 with a controllable phase between a ground state and the excited state in a model Λ-structured atom using two short laser pulses. One of the pulses has constant carrier frequency quasi-resonant with transition between an initially empty ground and the excite states. The frequency of the second pulse is swept through the resonance with the adjacent transition between the initially populated ground state and the common excited state of the atom. We demonstrate high degree of robustness of the scheme against variation of parameters of the laser radiation in relatively broad region of values. The proposed scheme may find practical applications in the field of multi-photon ionization, high-order harmonics and Raman sideband generation, as well as in nonlinear wave mixing in coherently prepared media.

show abstract

Coherent superpositions of states in coupled Hilbert-space using step by step Morris–Shore transformation

Saadati-Niari

2016

Annals of Physics

View full text Add to dashboard Cite

Creation of a coherent superposition of quantum states by a single frequency-chirped short laser pulse

Cited by 17 publications

References 39 publications

Creation of coherent superposition states in inhomogeneously broadened media with relaxation

Creation of coherent superposition states in inhomogeneously broadened media with relaxation

An extremely robust strong-field control of atomic coherence

Coherent superpositions of states in coupled Hilbert-space using step by step Morris–Shore transformation

Contact Info

Product

Resources

About