Laser control of resonance tunneling via an exceptional point

0533637 - FZÚ 2021 RIV US eng J - Journal Article
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
R&D Projects: GA ČR(CZ) GA20-21179S
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : resonance tunneling * ight induced exceptional points (EPs) by laser contro
OECD category: Optics (including laser optics and quantum optics); Optics (including laser optics and quantum optics) (UFP-V)
Impact factor: 9.161, year: 2020
Method of publishing: Limited access
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.

Permanent Link: http://hdl.handle.net/11104/0311966