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Title: Absorption spectrum of a two-level system subjected to a periodic pulse sequence

We investigate how the quantum control of a two-level system (TLS) coupled to photons can modify and tune the TLS’s photon absorption spectrum. Tuning and controlling the emission and the absorption is of much interest e.g. for the development of efficient interfaces between stationary and flying qubits in modern architectures for quantum computation and quantum communication. We consider the periodic pulse control, where the TLS is subjected to a periodic sequence of the near-resonant Rabi driving pulses, each pulse implementing a 180° rotation. For small inter-pulse delays, the absorption spectrum features a pronounced peak of stimulated emission at the pulse frequency, as well as equidistant satellite peaks with smaller spectral weights. As long as the detuning between the carrier frequency of the driving and the TLS transition frequency remains moderate, this spectral shape shows little change. Therefore, the quantum control allows shifting the absorption peak to a desired position, and locks the absorption peak to the carrier frequency of the driving pulses. Detailed description of the spectrum, and its evolution as a function time, the inter-pulse spacing and the detuning, is presented.
Authors:
 [1] ;  [2]
  1. Iowa State Univ., Ames, IA (United States); State Univ. of New York (SUNY), Albany, NY (United States)
  2. Ames Lab., Ames, IA (United States); Delft Univ. of Technology (Netherlands)
Publication Date:
Report Number(s):
IS-J 9344
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1702747
Grant/Contract Number:
AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 21; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1368048
Alternate Identifier(s):
OSTI ID: 1361114

Fotso, H. F., and Dobrovitski, V. V.. Absorption spectrum of a two-level system subjected to a periodic pulse sequence. United States: N. p., Web. doi:10.1103/PhysRevB.95.214301.
Fotso, H. F., & Dobrovitski, V. V.. Absorption spectrum of a two-level system subjected to a periodic pulse sequence. United States. doi:10.1103/PhysRevB.95.214301.
Fotso, H. F., and Dobrovitski, V. V.. 2017. "Absorption spectrum of a two-level system subjected to a periodic pulse sequence". United States. doi:10.1103/PhysRevB.95.214301. https://www.osti.gov/servlets/purl/1368048.
@article{osti_1368048,
title = {Absorption spectrum of a two-level system subjected to a periodic pulse sequence},
author = {Fotso, H. F. and Dobrovitski, V. V.},
abstractNote = {We investigate how the quantum control of a two-level system (TLS) coupled to photons can modify and tune the TLS’s photon absorption spectrum. Tuning and controlling the emission and the absorption is of much interest e.g. for the development of efficient interfaces between stationary and flying qubits in modern architectures for quantum computation and quantum communication. We consider the periodic pulse control, where the TLS is subjected to a periodic sequence of the near-resonant Rabi driving pulses, each pulse implementing a 180° rotation. For small inter-pulse delays, the absorption spectrum features a pronounced peak of stimulated emission at the pulse frequency, as well as equidistant satellite peaks with smaller spectral weights. As long as the detuning between the carrier frequency of the driving and the TLS transition frequency remains moderate, this spectral shape shows little change. Therefore, the quantum control allows shifting the absorption peak to a desired position, and locks the absorption peak to the carrier frequency of the driving pulses. Detailed description of the spectrum, and its evolution as a function time, the inter-pulse spacing and the detuning, is presented.},
doi = {10.1103/PhysRevB.95.214301},
journal = {Physical Review B},
number = 21,
volume = 95,
place = {United States},
year = {2017},
month = {6}
}