Temperature switch and router of two and three-mode noise correlation in Pr³⁺:YSO crystal

Abstract

Rare earth doped crystal Pr 3+ :Y 2 SiO 5 has unique features, whose nonlinear response is dynamically triggered and modulated by the interaction between dressing and phonon effect. In this article, we have demonstrated the switching from two-mode bunching to anti-bunching like phenomenon of noise intensity fluctuations used for noise correlation. Here, switching in bunching phenomenon is caused by relative nonlinear phase, which is induced by self-and cross-phase modulation. In contrast with two-mode bunching, three-mode bunching case hardly follows the switching mechanism attributed to the destructive interaction among the phases of Stokes, anti-Stokes and FL signals. We also have realized switching and routing application in two and three mode bunching. Both functions (switching and routing) are controlled by manipulating temperature of cryostat and gate delay. Our experimental results provide the novel technique for switching and channel equalization ratio of about 96%. The intensity switching speed is achieved about 17 ns.

Spectral non-hermitian quantization line shape controlled by phonon dressing in various phases of Eu3+:BiPO4

“…Fig. 5(a and b) show the evolution from the dressing dip line width to sharp peak line width based on changing the temperature from 300 K to 77 K. When the temperature was fixed at 300 K, three dressing pure dips (triple bound states in continuum 17 ) could be observed in Fig. 5(a1 and b1), which arose from destructive interference among the one perfect continuous state and three bound states from the photon1 bound state , photon1–phonon1 bound state , and photon1–phonon1–phonon2 bound state from eqn (4) and (5).…”

“…The interaction of a phonon with a single and the double-dressed state in Pr 3+ :Y 2 SiO 5 crystal and the polarization-dressing effect of fourth-order fluorescence (FL) at different temperatures have been recently explored. 15–17 These results from these studies can be used to realize multiple applications, such as temperature switches and routers of two- and three-mode noise correlation in Pr 3+ :Y 2 SiO 5 crystals 18 and tuneable hybrid spectral filters and the time-division multiplexing of second-order fluorescence controlled by phonon dressing. 19–21…”