Spectral features of the tunneling-induced transparency and the Autler-Townes doublet and triplet in a triple quantum

Xiao Qing Luo, Zeng Zhao Li, Jun Jing, Wei Xiong, Tie Fu Li, Ting Yu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We theoretically investigate the spectral features of tunneling-induced transparency (TIT) and Autler-Townes (AT) doublet and triplet in a triple-quantum-dot system. By analyzing the eigenenergy spectrum of the system Hamiltonian, we can discriminate TIT and double TIT from AT doublet and triplet, respectively. For the resonant case, the presence of the TIT does not exhibit distinguishable anticrossing in the eigenenergy spectrum in the weak-tunneling regime, while the occurrence of double anticrossings in the strong-tunneling regime shows that the TIT evolves to the AT doublet. For the off-resonance case, the appearance of a new detuning-dependent dip in the absorption spectrum leads to double TIT behavior in the weak-tunneling regime due to no distinguished anticrossing occurring in the eigenenergy spectrum. However, in the strong-tunneling regime, a new detuning-dependent dip in the absorption spectrum results in AT triplet owing to the presence of triple anticrossings in the eigenenergy spectrum. Our results can be applied to quantum measurement and quantum-optics devices in solid systems.

Original languageEnglish (US)
Article number3107
JournalScientific reports
Volume8
Issue number1
DOIs
StatePublished - Dec 1 2018

Fingerprint

absorption spectra
quantum optics
quantum dots
occurrences

All Science Journal Classification (ASJC) codes

  • General

Cite this

Luo, Xiao Qing ; Li, Zeng Zhao ; Jing, Jun ; Xiong, Wei ; Li, Tie Fu ; Yu, Ting. / Spectral features of the tunneling-induced transparency and the Autler-Townes doublet and triplet in a triple quantum. In: Scientific reports. 2018 ; Vol. 8, No. 1.
@article{1e9d9a12e5ec45a6bc37344023f4933b,
title = "Spectral features of the tunneling-induced transparency and the Autler-Townes doublet and triplet in a triple quantum",
abstract = "We theoretically investigate the spectral features of tunneling-induced transparency (TIT) and Autler-Townes (AT) doublet and triplet in a triple-quantum-dot system. By analyzing the eigenenergy spectrum of the system Hamiltonian, we can discriminate TIT and double TIT from AT doublet and triplet, respectively. For the resonant case, the presence of the TIT does not exhibit distinguishable anticrossing in the eigenenergy spectrum in the weak-tunneling regime, while the occurrence of double anticrossings in the strong-tunneling regime shows that the TIT evolves to the AT doublet. For the off-resonance case, the appearance of a new detuning-dependent dip in the absorption spectrum leads to double TIT behavior in the weak-tunneling regime due to no distinguished anticrossing occurring in the eigenenergy spectrum. However, in the strong-tunneling regime, a new detuning-dependent dip in the absorption spectrum results in AT triplet owing to the presence of triple anticrossings in the eigenenergy spectrum. Our results can be applied to quantum measurement and quantum-optics devices in solid systems.",
author = "Luo, {Xiao Qing} and Li, {Zeng Zhao} and Jun Jing and Wei Xiong and Li, {Tie Fu} and Ting Yu",
year = "2018",
month = "12",
day = "1",
doi = "https://doi.org/10.1038/s41598-018-21221-3",
language = "English (US)",
volume = "8",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}

Spectral features of the tunneling-induced transparency and the Autler-Townes doublet and triplet in a triple quantum. / Luo, Xiao Qing; Li, Zeng Zhao; Jing, Jun; Xiong, Wei; Li, Tie Fu; Yu, Ting.

In: Scientific reports, Vol. 8, No. 1, 3107, 01.12.2018.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spectral features of the tunneling-induced transparency and the Autler-Townes doublet and triplet in a triple quantum

AU - Luo, Xiao Qing

AU - Li, Zeng Zhao

AU - Jing, Jun

AU - Xiong, Wei

AU - Li, Tie Fu

AU - Yu, Ting

PY - 2018/12/1

Y1 - 2018/12/1

N2 - We theoretically investigate the spectral features of tunneling-induced transparency (TIT) and Autler-Townes (AT) doublet and triplet in a triple-quantum-dot system. By analyzing the eigenenergy spectrum of the system Hamiltonian, we can discriminate TIT and double TIT from AT doublet and triplet, respectively. For the resonant case, the presence of the TIT does not exhibit distinguishable anticrossing in the eigenenergy spectrum in the weak-tunneling regime, while the occurrence of double anticrossings in the strong-tunneling regime shows that the TIT evolves to the AT doublet. For the off-resonance case, the appearance of a new detuning-dependent dip in the absorption spectrum leads to double TIT behavior in the weak-tunneling regime due to no distinguished anticrossing occurring in the eigenenergy spectrum. However, in the strong-tunneling regime, a new detuning-dependent dip in the absorption spectrum results in AT triplet owing to the presence of triple anticrossings in the eigenenergy spectrum. Our results can be applied to quantum measurement and quantum-optics devices in solid systems.

AB - We theoretically investigate the spectral features of tunneling-induced transparency (TIT) and Autler-Townes (AT) doublet and triplet in a triple-quantum-dot system. By analyzing the eigenenergy spectrum of the system Hamiltonian, we can discriminate TIT and double TIT from AT doublet and triplet, respectively. For the resonant case, the presence of the TIT does not exhibit distinguishable anticrossing in the eigenenergy spectrum in the weak-tunneling regime, while the occurrence of double anticrossings in the strong-tunneling regime shows that the TIT evolves to the AT doublet. For the off-resonance case, the appearance of a new detuning-dependent dip in the absorption spectrum leads to double TIT behavior in the weak-tunneling regime due to no distinguished anticrossing occurring in the eigenenergy spectrum. However, in the strong-tunneling regime, a new detuning-dependent dip in the absorption spectrum results in AT triplet owing to the presence of triple anticrossings in the eigenenergy spectrum. Our results can be applied to quantum measurement and quantum-optics devices in solid systems.

UR - http://www.scopus.com/inward/record.url?scp=85042185008&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042185008&partnerID=8YFLogxK

U2 - https://doi.org/10.1038/s41598-018-21221-3

DO - https://doi.org/10.1038/s41598-018-21221-3

M3 - Article

VL - 8

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 3107

ER -