화학과 세미나가 다음주 월요일(5월 22일) 오후 4시 30분에 개최됩니다.
장소는 화학관 1층 330126호실입니다.
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제 목 : Single photon interferometry and wave-particle duality
연 사 : 조민행 교수님(고려대학교)
일 시 : 2023년 5월 22일(월)오후 4시 30분
Single photon interferometry and wave-particle duality
Wave interferences are a common occurrence in nature and have been utilized in various interferometric processes in the time, frequency, and spatial domains. These processes have facilitated the development of remote-detection quantum spectroscopy with undetected photons, nonlinear optical or chiroptical spectroscopy, and interferometric Rayleigh and Raman scattering microscopy. Moreover, coherent multidimensional spectroscopy has proven to be useful in studying the molecular structure, anharmonic potential energy surface, and intermolecular interactions in condensed phases. In this lecture, I discuss the relationship between single-photon interferometry, quantitative wave-particle duality, spectroscopic dephasing, and quantum decoherence. By utilizing two entangled nonlinear bi-photon sources, we were able to prepare a quantum superposition of path-bin single-photon states with experimental control over the degree of quantum entanglement between quantons and detectors/environments. Measuring the interference of single photons allowed us to establish a quantitative complementarity relation between the wave and particle aspects of quantons. Furthermore, we demonstrated the experimental feasibility of remote-detection quantum spectroscopy with pairs of entangled photons by performing spectroscopy with undetected photons.