We report the formation of spin texture resulting from the magnetic dipole-dipole interaction in a spin-2 Rb-87 Bose-Einstein condensate. The spinor condensate is prepared in the transversely polarized spin state and the time evolution is observed...
Mark Sadgrove Yujiro Eto Sawako Sekine Hirosuke Suzuki Takuya Hirano
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 82(9) 094002 2013年9月 [査読有り]
We perform atom interferometry using the Zeeman sublevels of a spin-2 Bose-Einstein condensate of Rb-87. The observed fringes are strongly peaked, and fringe repetition rates higher than the fundamental Ramsey frequency are found in agreement with...
Yujiro Eto Hayato Ikeda Hirosuke Suzuki Sho Hasegawa Yasushi Tomiyama Sawako Sekine Mark Sadgrove Takuya Hirano
PHYSICAL REVIEW A 88(3) 031602 2013年9月 [査読有り]
We demonstrate detection of a weak alternate-current magnetic field by application of the spin-echo technique to F = 2 Bose-Einstein condensates. A magnetic field sensitivity of 12 pT/root Hz is attained for an atom number of 5 x 10(3) at a spatia...
Radio-frequency pulses are applied to probe and control the Larmor precession of a spin-2 Bose-Einstein condensate subject to a magnetic field gradient. Using the techniques of Ramsey interferometry and Stern-Gerlach absorption imaging, a helical ...
JAPANESE JOURNAL OF APPLIED PHYSICS 52(4) 048001 2013年4月 [査読有り]
We experimentally investigate the temporal characteristics of picosecond squeezed pulses generated via an optical parametric amplification in a periodically poled MgO:LiNbO3 waveguide. The noise variances for the various time delays between the sq...
人文科学研究科
理学部