Two- and three-dimensional polarons with extended coherent states

Chen, Qing-Hu; Minghu, Fang; Wang, Kelin; Wan, Shaolong

doi:10.1103/physrevb.53.11296

Cited by 18 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, this just coincides with the case of 3D symmetrical quantum dots with parabolic potentials, discussed by Mukhopadhyay, Chatterjee and others [12,[29][30]. Thus, the results are naturally the same as theirs.…”

Section: ω Z = ωsupporting

confidence: 85%

Second-order perturbative treatment for confined polarons in low-dimensional polar semiconductors

Chen¹,

Ren²,

Li³

et al. 1999

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

Within the framework of second-order Rayleigh-Schrödinger perturbation theory, the effects of the interaction of the electrons and longitudinal optical phonons in low-dimensional semiconducting heterostructures can be investigated in a unified way. As a result, the ground-state energy for polarons confined in a general potential can be explicitly expressed as a one-dimensional integral. Moreover, some interesting problems, such as those of polarons in quantum wells, quantum wires, and quantum dots, can be readily addressed just by taking different limits. Finally, in a general sense, it is shown on the basis of numerical calculations that the polaronic effect is enhanced with lowering dimensionality and increasing asymmetry.

show abstract

Section: ω Z = ωsupporting

confidence: 85%

Second-order perturbative treatment for confined polarons in low-dimensional polar semiconductors

Chen¹,

Ren²,

Li³

et al. 1999

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

show abstract

“…While experimental evidence has suggested that polarons are present in the normal state of some HTSC's, 1 it is still unclear whether and how condensation of polarons could take place in these systems. [2][3][4][5][6] Many puzzling physical properties of the HTSC's have been interpreted in terms of polaronic models. 7 Hall coefficient and T-linear electrical resistivity in YBa 2 Cu 3 O 7Ϫ␦ have been quantitatively explained 8 by assuming that the normal state contains a nondegenerate gas of singlet bipolarons and that a fraction of them Anderson localizes because of disorder.…”

Section: ͓S0163-1829͑97͒03825-3͔mentioning

confidence: 99%

c-axis resistivity in high-Tcsuperconductors

Zoli

1997

Phys. Rev. B

View full text Add to dashboard Cite

“…One is based on the phontonic Fock states as pioneered by Swain [23][24][25][26][27], and the other on various unitary transformations or displaced oscillators [15,[28][29][30][31][32][33][34][35][36][37][38][39], which are equivalent to extended coherent states [40] or extended squeezed states [19]. Very accurate solutions can be obtained in the latter scheme, but as an infinite number of phontonic Fock states are involved, certain important features may be smeared out.…”

Section: Introductionmentioning

confidence: 99%

Absence of collapse in quantum Rabi oscillations

Zhao

Chen

2014

Phys. Rev. A

View full text Add to dashboard Cite

We show analytically that the collapse and revival in the population dynamics of the atom-cavity coupled system under the rotating wave approximation (RWA), valid only at very weak coupling, is an artifact as the atom-cavity coupling is increased. Even the first-order correction to the RWA is able to bring about the absence of the collapse in the dynamics of atomic population inversion thanks to intrinsic oscillations resulting from the transitions between two levels with the same atomic quantum number. The removal of the collapse is valid for a wide range of coupling strengths which are accessible to current experimental setups. In addition, based on our analytical results that greatly improve upon the conventional RWA, even the strong-coupling power spectrum can now be explained with the help of the numerically exact energy levels.Comment: 21 pages, 3 figure

show abstract

Two- and three-dimensional polarons with extended coherent states

Cited by 18 publications

References 26 publications

Second-order perturbative treatment for confined polarons in low-dimensional polar semiconductors

Second-order perturbative treatment for confined polarons in low-dimensional polar semiconductors

c-axis resistivity in high-Tcsuperconductors

Absence of collapse in quantum Rabi oscillations

Contact Info

Product

Resources

About