Laser control of resonance tunneling via an exceptional point

0533637 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Ben-Asher, A. - Šimsa, Daniel - Uhlířová, Tereza - Šindelka, Milan - Moiseyev, N.
Laser control of resonance tunneling via an exceptional point.
Physical Review Letters. Roč. 124, č. 25 (2020), s. 1-6, č. článku 253202. ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA ČR(CZ) GA20-21179S
Institucionální podpora: RVO:68378271 ; RVO:61389021
Klíčová slova: resonance tunneling * ight induced exceptional points (EPs) by laser contro
Obor OECD: Optics (including laser optics and quantum optics); Optics (including laser optics and quantum optics) (UFP-V)
Impakt faktor: 9.161, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevLett.124.253202

According to the familiar Breit-Wigner formula, tunneling through a potential barrier is strongly enhanced when the energy of the projectile is equal to the resonance energy. Here we show how a weak continuous wave laser can qualitatively change the character of resonance tunneling, and enforce a sudden and total suppression of the transmission by inducing an exceptional point (EP, special non-Hermitian degeneracy). Our findings are relevant not only for laser control of transmission in the resonance tunneling diodes, but also in the context of electron scattering through any type of metastable (e.g., autoionization, Auger, intermolecular Coulombic decay) atomic or molecular states, and even in the case of transmission of light or sound waves in active systems with gain and loss.

Trvalý link: http://hdl.handle.net/11104/0311966