Interplay between quantum Zeno and anti-Zeno effects in a nondegenerate hyper-Raman nonlinear optical coupler

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73607464" target="_blank" >RIV/61989592:15310/21:73607464 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.aps.org/pra/pdf/10.1103/PhysRevA.103.013713" target="_blank" >https://journals.aps.org/pra/pdf/10.1103/PhysRevA.103.013713</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.103.013713" target="_blank" >10.1103/PhysRevA.103.013713</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interplay between quantum Zeno and anti-Zeno effects in a nondegenerate hyper-Raman nonlinear optical coupler

Popis výsledku v původním jazyce

Quantum Zeno and anti-Zeno effects are studied in an asymmetric nonlinear optical coupler composed of a probe waveguide and a system waveguide. The system is a nonlinear waveguide operating under the nondegenerate hyper-Raman process, while both the pump modes in the system are constantly interacting with the probe waveguide. The effect of the presence of the probe on the spatial evolution of the system in terms of the number of photons in Stokes and anti-Stokes modes as well as the phonon number is quantified as the Zeno parameter. The negative (positive) values of the Zeno parameter in the specific mode are considered as the signatures of the quantum Zeno (anti-Zeno) effect in that mode of the system. It is observed that the initial phase difference between all the coherent amplitudes involved in the Stokes and anti-Stokes generation processes can be controlled to induce a transition between quantum Zeno and anti-Zeno effects for the hyper-Raman process in both cases with and without phase matching. However, in the case of the hyper-Raman process in the system waveguide without a phase matching, the phase mismatch parameters, due to difference in the wave vectors of all the modes involved in the Stokes and anti-Stokes generation processes, can also be used analogously to cause the desired crossover. Further, the general nature of the physical system and the perturbative technique used here allow us to analytically study the possibilities of observing quantum Zeno and anti-Zeno effects in a large number of special cases, including situations where the process is spontaneous or partially spontaneous and/or the system is operated under a degenerate hyper-Raman process, or a simple Raman process.

Název v anglickém jazyce

Interplay between quantum Zeno and anti-Zeno effects in a nondegenerate hyper-Raman nonlinear optical coupler

Popis výsledku anglicky

Quantum Zeno and anti-Zeno effects are studied in an asymmetric nonlinear optical coupler composed of a probe waveguide and a system waveguide. The system is a nonlinear waveguide operating under the nondegenerate hyper-Raman process, while both the pump modes in the system are constantly interacting with the probe waveguide. The effect of the presence of the probe on the spatial evolution of the system in terms of the number of photons in Stokes and anti-Stokes modes as well as the phonon number is quantified as the Zeno parameter. The negative (positive) values of the Zeno parameter in the specific mode are considered as the signatures of the quantum Zeno (anti-Zeno) effect in that mode of the system. It is observed that the initial phase difference between all the coherent amplitudes involved in the Stokes and anti-Stokes generation processes can be controlled to induce a transition between quantum Zeno and anti-Zeno effects for the hyper-Raman process in both cases with and without phase matching. However, in the case of the hyper-Raman process in the system waveguide without a phase matching, the phase mismatch parameters, due to difference in the wave vectors of all the modes involved in the Stokes and anti-Stokes generation processes, can also be used analogously to cause the desired crossover. Further, the general nature of the physical system and the perturbative technique used here allow us to analytically study the possibilities of observing quantum Zeno and anti-Zeno effects in a large number of special cases, including situations where the process is spontaneous or partially spontaneous and/or the system is operated under a degenerate hyper-Raman process, or a simple Raman process.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologie pro budoucnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICAL REVIEW A

ISSN

2469-9926

e-ISSN

—

Svazek periodika

103

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

"013713-1"-"013713-10"

Kód UT WoS článku

000607478400016

EID výsledku v databázi Scopus

2-s2.0-85100197110