TY - JOUR
T1 - Shannon entropies of asymmetric multiple quantum well systems with a constant total length
AU - Carrillo, R. Santana
AU - Gil-Barrera, C. A.
AU - Sun, Guo Hua
AU - Solaimani, M.
AU - Dong, Shi Hai
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2021/10
Y1 - 2021/10
N2 - We calculate the Shannon entropies numerically for a rectangular asymmetric multiple quantum well system with a constant total length. This quantum system is designed as an asymmetric multiple well with equal barriers but unequal arithmetic sequence (AS) wells. We show how the number of wells and confining potential depth affect the Shannon entropy density and the Shannon entropy. When increasing the confined potential depth Vconf, the magnitude of the position entropy density decreases while that of the momentum entropy density increases, but there is a very slight difference when the confined potential depth reaches a large value. Also, the oscillation frequency of the position entropy density inside the quantum barriers decreases while that of the position entropy density inside the quantum wells increases. When the potential well depth reaches a large value, the moving particle is mainly confined in a relatively wide potential well, and the position entropy density disappears in other barriers and potential wells. As the number of wells increases, the oscillation frequency of the position entropy density decreases inside the barriers but increases inside the quantum wells. It is very interesting to see that the Sx and Sp do not always decrease or increase monotonically with the confined potential depth Vconf, but their sum always satisfies the BBM inequality.
AB - We calculate the Shannon entropies numerically for a rectangular asymmetric multiple quantum well system with a constant total length. This quantum system is designed as an asymmetric multiple well with equal barriers but unequal arithmetic sequence (AS) wells. We show how the number of wells and confining potential depth affect the Shannon entropy density and the Shannon entropy. When increasing the confined potential depth Vconf, the magnitude of the position entropy density decreases while that of the momentum entropy density increases, but there is a very slight difference when the confined potential depth reaches a large value. Also, the oscillation frequency of the position entropy density inside the quantum barriers decreases while that of the position entropy density inside the quantum wells increases. When the potential well depth reaches a large value, the moving particle is mainly confined in a relatively wide potential well, and the position entropy density disappears in other barriers and potential wells. As the number of wells increases, the oscillation frequency of the position entropy density decreases inside the barriers but increases inside the quantum wells. It is very interesting to see that the Sx and Sp do not always decrease or increase monotonically with the confined potential depth Vconf, but their sum always satisfies the BBM inequality.
UR - http://www.scopus.com/inward/record.url?scp=85117692078&partnerID=8YFLogxK
U2 - 10.1140/epjp/s13360-021-02057-9
DO - 10.1140/epjp/s13360-021-02057-9
M3 - Artículo
AN - SCOPUS:85117692078
SN - 2190-5444
VL - 136
JO - European Physical Journal Plus
JF - European Physical Journal Plus
IS - 10
M1 - 1060
ER -