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

Abstract

The effect of the presence of two probe waveguides on the dynamics of hyper-Raman processes is studied in terms of quantum Zeno and anti-Zeno effects. Specifically, the enhancement (diminution) of the evolution of the hyper-Raman processes due to interaction with the probe waveguides via evanescent waves is viewed as quantum Zeno (anti-Zeno) effect. We considered the two probe waveguides interacting with only one of the optical modes at a time. For instance, as a specific scenario, it is considered that the two non-degenerate pump modes interact with each probe waveguide linearly while Stokes and anti-Stokes modes do not interact with the probes. Similarly, in another scenario, we assumed both the probe waveguides interact with Stokes (anti-Stokes) mode simultaneously. The present results show that quantum Zeno (anti-Zeno) effect is associated with phasematching (mismatching). However, we did not find any relation between the presence of the quantum Zeno effect and antibunching in the bosonic modes present in the hyper-Raman processes.

Optical measurement of electron spins in quantum dots: Quantum Zeno effects

“…On the one hand, it has to be taken into account during the qubit measurement, and on the other hand, it allows one to increase the relaxation time of the qubits. This leads to the growing interest in the investigation of the quantum Zeno effects for many systems promising for the quantum computations: cold atoms [10,11], trapped ions [12], quantum cavities and waveguides [13][14][15][16][17], NV centers in diamond [18][19][20], and nuclear spins [21][22][23][24].…”

Quantum Properties in Nonlinear Coupler with Raman Process.

“…The quantum description of various forms of Raman process in the nonlinear media has been a topic of interest among quantum opticians (see, e.g., [22] ). However, the quantum aspects of a nonlinear coupler operating with the Raman process are yet to be fully investigated [23], [24]. Particularly, we believe that the single and compound mode squeezing in the current system is yet to be investigated.…”

Squeezed Light Generation in Three-Channel Nonlinear Coupler with Second-Harmonic Generation and Frequency Mismatch

“…Several designs of nonlinear couplers as quantum light generators have previously been reported. [1]- [4]. Nonlinear couplers made of Kerr nonlinear material are considered in some work [5]- [8].…”