RT Journal Article
T1 Enhanced quantum tunneling in quantum Zeno dynamics freezing the momentum direction
A1 Porras, Miguel A.
A1 Mata, Nilo
A1 Gonzalo Fonrodona, Isabel
AB Quantum tunneling is a fundamental quantum-mechanical effect involved in plenty of physical phenomena. Its control would impact these phenomena and the technologies based on them. We show that the quantum tunneling probability through a potential barrier can be increased to approach unity in a quantum Zeno dynamics undergone by the tunneling particle in which the direction of the momentum is frequently monitored. We first model the measurements of the momentum direction as selective von Neumann projections, and then as nonselective, direction-sensitive interactions of the particle with probe particles. Nonselective measurements are more efficient than selective measurements in enhancing the quantum tunneling probability.
PB Amer Physical Soc
SN 2469-9926
YR 2022
FD 2022-07-26
LK https://hdl.handle.net/20.500.14352/71960
UL https://hdl.handle.net/20.500.14352/71960
LA eng
NO ©2022 American Physical Society.M.A.P. acknowledges support from Project No. PGC2018- 093854-B-I00, and M.A.P. and I.G. acknowledge support from Project No. FIS2017-87360-P of the Spanish Ministerio de Ciencia, Innovación y Universidades. N.M. acknowledges support from Grant No. D480 (Beca de colaboración de formación) of the Universidad Politécnica de Madrid.
NO Ministerio de Economía y Competitivdad (MINECO)
NO Ministerio de Ciencia e Innovación (MICINN)
NO Universidad Politécnica de Madrid
DS Docta Complutense
RD 9 abr 2025