Zobrazeno 1 - 10
of 527
pro vyhledávání: '"Hakuta, K."'
Publikováno v:
Phys. Rev. A 101, 053822 (2020)
We study the generation of correlated photon pairs and heralded single photons via strongly non-degenerate spontaneous four-wave mixing (SFWM) in a series of identical micro-/nano fibers (MNF). Joint spectral intensity of the biphoton field generated
Externí odkaz:
http://arxiv.org/abs/1910.12918
We report the fabrication of a 1.2 cm long cavity directly on a nanofiber using femtosecond laser ablation. The cavity modes with finesse value in the range 200-400 can still maintain the transmission between 40-60%, which can enable "strong-coupling
Externí odkaz:
http://arxiv.org/abs/1701.06719
We implement a photonic crystal nanofiber device by reversibly combining an optical nanofiber and a nanofabricated grating. Using the finite-difference time-domain method, we design the system for minimal optical loss while tailoring the resonant wav
Externí odkaz:
http://arxiv.org/abs/1306.0166
Autor:
Nayak, K. P., Hakuta, K.
We demonstrate that thousands of periodic nano-craters are fabricated on a subwavelength-diameter tapered optical fiber, an optical nanofiber, by irradiating with just a single femtosecond laser pulse. A key aspect of the fabrication is that the nano
Externí odkaz:
http://arxiv.org/abs/1210.7592
We experimentally demonstrate the efficient channeling of fluorescence photons from single q-dots on optical nanofiber into the guided modes, by measuring the photon-count rates through the guided and radiation modes simultaneously. We obtain the max
Externí odkaz:
http://arxiv.org/abs/1204.6153
We experimentally investigate the fluorescence photon emission characteristics for single q-dots by using optical nanofibers. We demonstrate that single q-dots can be deposited along an optical nanofiber systematically and reproducibly with a precisi
Externí odkaz:
http://arxiv.org/abs/1112.0624
We study nanofibers with Bragg gratings from equidistant holes. We calculate analytically and numerically the reflection and transmission coefficients for a single grating and also for a cavity formed by two gratings. We show that the reflection and
Externí odkaz:
http://arxiv.org/abs/1103.1789
Autor:
Kien, Fam Le, Hakuta, K.
We study the interaction of an atom with a quantum guided field in a weakly driven fiber-Bragg-grating (FBG) cavity. We present an effective Hamiltonian and derive the density-matrix equations for the combined atom-cavity system. We calculate the mea
Externí odkaz:
http://arxiv.org/abs/1001.5308
Autor:
Kien, Fam Le, Hakuta, K.
We study spontaneous emission of an atom near a nanofiber with two fiber-Bragg-grating (FBG) mirrors. We show that the coupling between the atom and the guided modes of the nanofiber can be significantly enhanced by the FBG cavity even when the cavit
Externí odkaz:
http://arxiv.org/abs/0910.5276
Autor:
Nayak, K. P., Hakuta, K.
We show that single-atoms can be trapped on the surface of a subwavelength-diameter silica-fiber, an optical nanofiber, without any external field, and that single photons spontaneously emitted from the atoms can be readily detected through the singl
Externí odkaz:
http://arxiv.org/abs/0709.2749