―129―As human beings, we live in our own natural ways that determine how we typically act, think, and feel. All our daily routines carry unique information to trace our minds unconsciously that are also ‘residing’ in our intrinsic brain. Recently, it has been known that each person has his/her unique sensory, motor, cognition, circadian, and brain rhythms, etc. These lines of research have indicated a new frontier in cognitive neuroscience - extracting ‘fingerprints’ from the body/mind/brain that can consistently identify the uniqueness of each person. Under this umbrella, a fundamentally important question arises can we track the ‘fingerprints’ of each mind particularly related to happiness/stress based on daily life tempo and tempo variations measurement, uncover the intrinsic brain signatures, and further develop strategies for mind tuning toward better states. To approach these questions, we propose various studies from behavior, brain, and intervention perspectives that are also kindly supported by FRIS creative interdisciplinary program, FRIS annual grant, and the Ensemble grant at Tohoku University. We have several publications come out last year, while the most relevant research findings are still undergoing. Fumihiro Kaneda (Creative Interdisciplinary Research Division/Information and Systems) Single photons are fundamental quantum states of light and are expected to be a fast and stable information carrier in quantum information technology. A standard method for producing photon pairs and heralded single photons is spontaneous parametric downconversion (SPDC). However, SPDC can produce photon pairs only probabilistically with an unnecessary quantum correlation that degrades the quantum-mechanical purity of individual photons. Our goal is to overcome the probabilistic nature and to eliminate the photon-pair quantum correlation for realizing an ideal single-photon source. In this year, we demonstrated the high-purity single-photon generation utilizing a domain-engineering technique [1], shaping a longitudinal nonlinearity profile of a nonlinear optical crystal and an associated photon-pair spectral distribution. Our scheme based on multi-order quasi-phase-matching (QPM) conditions that are satisfied by longer poling inversion periods than that of a first-order QPM, is easily implemented with current standard poling technology. References [1]Sun, S., Webster, P. J., Wang, Y., Yu, H., Yu, R., & Wang, S. (2022). Reduced Pupil OscillationDuring Facial Emotion Judgment in People with Autism Spectrum Disorder. Journal of Autism andDevelopmental Disorders, 1-11.[2]Sun, S., Cai, C., & Yu, R. (2021). Behavioral and attentional coding of expected reward and risk.Journal of Vision, 21(9), 1948-1948.[3]Wu, S., Sun, S., Camilleri, J. A., Eickhoff, S. B., & Yu, R. (2021). Better the devil you know thanthe devil you don't: Neural processing of risk and ambiguity. NeuroImage, 236, 118109.References [1]F. Kaneda, J. Oikawa, M. Yabuno, F. China, S. Miki, H. Terai, Y. Mitsumori, and K. Edamatsu, arXiv2111.10981 (2021).Pure Single-Photon Generation Using a Domain-Engineered Natural human tempo, its neural correlates, and their application for well-beingSai Sun (FRIS & RIEC /Cognitive Neuroscience) Nonlinear Optical Crystal
元のページ ../index.html#132