Angular Momentum Spectrum of Electromagnetic Wave

Chao ZHANG; Jin JIANG

doi:10.1587/transfun.2019EAL2112

Angular Momentum Spectrum of Electromagnetic Wave

Chao ZHANG, Jin JIANG

Full Text Views

0

Cite this

Summary :

Angular Momentum (AM) has been considered as a new dimension of wireless transmissions as well as the intrinsic property of Electro-Magnetic (EM) waves. So far, AM is utilized as a discrete mode not only in the quantum states, but also in the statistical beam forming. Traditionally, the continuous value of AM is ignored and only the quantized mode number is identified. However, the recent discovery on electrons in spiral motion producing twisted radiation with AM, including Spin Angular Momentum (SAM) and Orbital Angular Momentum (OAM), proves that the continuous value of AM is available in the statistical EM wave beam. This is also revealed by the so-called fractional OAM, which is reported in optical OAM beams. Then, as the new dimension with continuous real number field, AM should turn out to be a certain spectrum, similar to the frequency spectrum usually in the wireless signal processing. In this letter, we mathematically define the AM spectrum and show the applications in the information theory analysis, which is expected to be an efficient tool for the future wireless communications with AM.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E103-A No.4 pp.715-717

Publication Date: 2020/04/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.2019EAL2112

Type of Manuscript: LETTER

Category: Analog Signal Processing

Authors

Chao ZHANG
Tsinghua University
Jin JIANG
Tsinghua University

Keyword

angular momentum, twisted radiation, spectrum, vortex, OAM

Cite this

Copy

Chao ZHANG, Jin JIANG, "Angular Momentum Spectrum of Electromagnetic Wave" in IEICE TRANSACTIONS on Fundamentals, vol. E103-A, no. 4, pp. 715-717, April 2020, doi: 10.1587/transfun.2019EAL2112.
Abstract: Angular Momentum (AM) has been considered as a new dimension of wireless transmissions as well as the intrinsic property of Electro-Magnetic (EM) waves. So far, AM is utilized as a discrete mode not only in the quantum states, but also in the statistical beam forming. Traditionally, the continuous value of AM is ignored and only the quantized mode number is identified. However, the recent discovery on electrons in spiral motion producing twisted radiation with AM, including Spin Angular Momentum (SAM) and Orbital Angular Momentum (OAM), proves that the continuous value of AM is available in the statistical EM wave beam. This is also revealed by the so-called fractional OAM, which is reported in optical OAM beams. Then, as the new dimension with continuous real number field, AM should turn out to be a certain spectrum, similar to the frequency spectrum usually in the wireless signal processing. In this letter, we mathematically define the AM spectrum and show the applications in the information theory analysis, which is expected to be an efficient tool for the future wireless communications with AM.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2019EAL2112/_p

Copy

@ARTICLE{e103-a_4_715,
author={Chao ZHANG, Jin JIANG, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Angular Momentum Spectrum of Electromagnetic Wave},
year={2020},
volume={E103-A},
number={4},
pages={715-717},
abstract={Angular Momentum (AM) has been considered as a new dimension of wireless transmissions as well as the intrinsic property of Electro-Magnetic (EM) waves. So far, AM is utilized as a discrete mode not only in the quantum states, but also in the statistical beam forming. Traditionally, the continuous value of AM is ignored and only the quantized mode number is identified. However, the recent discovery on electrons in spiral motion producing twisted radiation with AM, including Spin Angular Momentum (SAM) and Orbital Angular Momentum (OAM), proves that the continuous value of AM is available in the statistical EM wave beam. This is also revealed by the so-called fractional OAM, which is reported in optical OAM beams. Then, as the new dimension with continuous real number field, AM should turn out to be a certain spectrum, similar to the frequency spectrum usually in the wireless signal processing. In this letter, we mathematically define the AM spectrum and show the applications in the information theory analysis, which is expected to be an efficient tool for the future wireless communications with AM.},
keywords={},
doi={10.1587/transfun.2019EAL2112},
ISSN={1745-1337},
month={April},}

Copy

TY - JOUR
TI - Angular Momentum Spectrum of Electromagnetic Wave
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 715
EP - 717
AU - Chao ZHANG
AU - Jin JIANG
PY - 2020
DO - 10.1587/transfun.2019EAL2112
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E103-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2020
AB - Angular Momentum (AM) has been considered as a new dimension of wireless transmissions as well as the intrinsic property of Electro-Magnetic (EM) waves. So far, AM is utilized as a discrete mode not only in the quantum states, but also in the statistical beam forming. Traditionally, the continuous value of AM is ignored and only the quantized mode number is identified. However, the recent discovery on electrons in spiral motion producing twisted radiation with AM, including Spin Angular Momentum (SAM) and Orbital Angular Momentum (OAM), proves that the continuous value of AM is available in the statistical EM wave beam. This is also revealed by the so-called fractional OAM, which is reported in optical OAM beams. Then, as the new dimension with continuous real number field, AM should turn out to be a certain spectrum, similar to the frequency spectrum usually in the wireless signal processing. In this letter, we mathematically define the AM spectrum and show the applications in the information theory analysis, which is expected to be an efficient tool for the future wireless communications with AM.
ER -