Search Results - "Katori, Hidetoshi"
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Test of general relativity by a pair of transportable optical lattice clocks
Published in Nature photonics (01-07-2020)“…A clock at a higher altitude ticks faster than one at a lower altitude, in accordance with Einstein’s theory of general relativity. The outstanding stability…”
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2
Exploring potential applications of optical lattice clocks in a plate subduction zone
Published in Journal of geodesy (01-08-2021)“…Optical clocks improved the accuracy of state-of-the-art cesium clocks by more than two orders of magnitude and enabled frequency comparison with a fractional…”
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3
Cryogenic optical lattice clocks
Published in Nature photonics (09-02-2015)“…A pair of 87 Sr optical lattice clocks with a statistical agreement of 2 × 10 −18 within 6,000 s has been developed. To this end, the behaviour of the…”
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4
Operational Magic Intensity for Sr Optical Lattice Clocks
Published in Physical review letters (28-12-2018)“…We experimentally investigate the lattice-induced light shift by the electric-quadrupole (E2) and magnetic-dipole (M1) polarizabilities and the…”
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5
Direct measurement of the frequency ratio for Hg and Yb optical lattice clocks and closure of the Hg/Yb/Sr loop
Published in Optics express (11-05-2020)“…We performed the first direct measurement of the frequency ratio between a mercury ( Hg) and an ytterbium ( Yb) optical lattice clock to find ν /ν = 2.177 473…”
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Colloquium : Physics of optical lattice clocks
Published in Reviews of modern physics (03-05-2011)“…Recently invented and demonstrated optical lattice clocks hold great promise for improving the precision of modern time keeping. These clocks aim at the 10{sup…”
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Quantum State Engineering and Precision Metrology Using State-Insensitive Light Traps
Published in Science (American Association for the Advancement of Science) (27-06-2008)“…Precision metrology and quantum measurement often demand that matter be prepared in well-defined quantum states for both internal and external degrees of…”
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SAGE: A proposal for a space atomic gravity explorer
Published in The European physical journal. D, Atomic, molecular, and optical physics (01-11-2019)“…The proposed mission “Space Atomic Gravity Explorer” (SAGE) has the scientific objective to investigate gravitational waves, dark matter, and other fundamental…”
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Recoil-free spectroscopy of neutral Sr atoms in the Lamb-Dicke regime
Published in Physical review letters (01-08-2003)“…Recoil-free as well as Doppler-free spectroscopy was demonstrated on the 1S0-3P1 transition of Sr atoms confined in a one-dimensional optical lattice. By…”
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10
Magic wavelength to make optical lattice clocks insensitive to atomic motion
Published in Physical review letters (09-10-2009)“…In a standing wave of light, a difference in spatial distributions of multipolar atom-field interactions may introduce atomic-motion dependent clock…”
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11
Optical lattice clocks and quantum metrology
Published in Nature photonics (01-04-2011)“…The 'magic wavelength' protocol has made it possible to design atomic clocks based on well-engineered perturbations. Such 'optical lattice clocks' will allow…”
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12
Magneto-Optical Trapping and Cooling of Strontium Atoms down to the Photon Recoil Temperature
Published in Physical review letters (08-02-1999)Get full text
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13
Coherence of Spin-Polarized Fermions Interacting with a Clock Laser in a Stark-Shift-Free Optical Lattice
Published in Journal of the Physical Society of Japan (01-01-2009)“…We investigated the coherence of spin-polarized 87Sr atoms trapped in a light-shift-free one-dimensional optical lattice during their interaction with a clock…”
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14
30-km-long optical fiber link at 1397 nm for frequency comparison between distant strontium optical lattice clocks
Published in Japanese Journal of Applied Physics (01-03-2014)“…We demonstrate a 30-km-long optical fiber link for frequency comparison between two strontium optical lattice clocks being developed at RIKEN and the…”
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15
Strategies for reducing the light shift in atomic clocks
Published in Physical review. A, Atomic, molecular, and optical physics (14-05-2015)Get full text
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16
Transportable Strontium Optical Lattice Clocks Operated Outside Laboratory at the Level of 10−18 Uncertainty
Published in Advanced quantum technologies (Online) (01-08-2021)“…Transportable strontium optical lattice clocks are developed with a fractional uncertainty of 5.5 × 10−18 for applications outside laboratories. A single clock…”
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Optimal design of dipole potentials for efficient loading of Sr atoms
Published in Journal of the Physical Society of Japan (01-08-1999)“…We propose and demonstrate a novel far-off-resonance optical dipole trap (FORT) that is compatible with Doppler cooling. Strontium atoms are magneto-optically…”
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18
Tricks for ticks
Published in Nature physics (01-04-2017)“…Optical-lattice clocks have pushed the limits of frequency measurement — to such an extent that a tiny difference in altitude affects the clock's tick rate, as…”
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19
Frequency Metrology with Optical Lattice Clocks
Published in Japanese Journal of Applied Physics (01-08-2010)“…The precision measurement of time and frequency is of great interest for a wide range of applications, including fundamental science and technologies that…”
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Anomalous Dynamics of a Single Ion in an Optical Lattice
Published in Physical review letters (22-09-1997)Get full text
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