Search Results - "LEMKE, N. D"
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1
High-accuracy measurement of atomic polarizability in an optical lattice clock
Published in Physical review letters (13-04-2012)“…Presently, the Stark effect contributes the largest source of uncertainty in a ytterbium optical atomic clock through blackbody radiation. By employing an…”
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Journal Article -
2
Probing Interactions Between Ultracold Fermions
Published in Science (American Association for the Advancement of Science) (17-04-2009)“…At ultracold temperatures, the Pauli exclusion principle suppresses collisions between identical fermions. This has motivated the development of atomic clocks…”
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3
Probing many-body interactions in an optical lattice clock
Published in Annals of physics (01-01-2014)“…We present a unifying theoretical framework that describes recently observed many-body effects during the interrogation of an optical lattice clock operated…”
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4
An atomic clock with 10(-18) instability
Published in Science (American Association for the Advancement of Science) (13-09-2013)“…Atomic clocks have been instrumental in science and technology, leading to innovations such as global positioning, advanced communications, and tests of…”
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Journal Article -
5
An Atomic Clock with 10―18 Instability
Published in Science (American Association for the Advancement of Science) (13-09-2013)“…Tick, Tick, Tick… Many aspects of everyday life from communication to navigation rely on the precise ticking of the microwave transitions of the atoms in…”
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6
First Measurement of the Atomic Electric Dipole Moment of Ra 225
Published in Physical review letters (09-06-2015)Get full text
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7
Making optical atomic clocks more stable with 10 −16 -level laser stabilization
Published in Nature photonics (01-03-2011)“…The superb precision of an atomic clock is derived from its stability. Atomic clocks based on optical (rather than microwave) frequencies are attractive…”
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Journal Article -
8
Sr lattice clock at 1 x 10(-16) fractional uncertainty by remote optical evaluation with a Ca clock
Published in Science (American Association for the Advancement of Science) (28-03-2008)“…Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these…”
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Journal Article -
9
Spin-1/2 optical lattice clock
Published in Physical review letters (07-08-2009)“…We experimentally investigate an optical clock based on ;{171}Yb (I = 1/2) atoms confined in an optical lattice. We have evaluated all known frequency shifts…”
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Journal Article -
10
p-Wave cold collisions in an optical lattice clock
Published in Physical review letters (02-09-2011)“…We study ultracold collisions in fermionic ytterbium by precisely measuring the energy shifts they impart on the atoms' internal clock states. Exploiting Fermi…”
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11
Optical lattice induced light shifts in an yb atomic clock
Published in Physical review letters (14-03-2008)“…We present an experimental study of the lattice-induced light shifts on the (1)S(0) --> (3)P(0) optical clock transition (nu(clock) approximately 518 THz) in…”
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12
Measurement of the Hyperfine Quenching Rate of the Clock Transition in Yb 171
Published in Physical review letters (18-07-2014)Get full text
Journal Article -
13
First Measurement of the Atomic Electric Dipole Moment of Ra225
Published in Physical review letters (12-06-2015)“…The radioactive radium-225 (Ra225) atom is a favorable case to search for a permanent electric dipole moment. Because of its strong nuclear octupole…”
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Journal Article -
14
Sr Lattice Clock at 1 x 10⁻¹⁶ Fractional Uncertainty by Remote Optical Evaluation with a Ca Clock
Published in Science (American Association for the Advancement of Science) (28-03-2008)“…Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these…”
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Journal Article -
15
Optical Lattice Clock with Spin-1/2 Ytterbium Atoms
Published 01-01-2012“…An optical lattice clock probes a spectrally narrow electronic transition in an ensemble of optically trapped, laser-cooled atoms, for use as a time and…”
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Dissertation -
16
Sr Lattice Clock at 1 ×$10^{-16}$Fractional Uncertainty by Remote Optical Evaluation with a Ca Clock
Published in Science (American Association for the Advancement of Science) (28-03-2008)“…Optical atomic clocks promise timekeeping at the highest precision and accuracy, owing to their high operating frequencies. Rigorous evaluations of these…”
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Journal Article -
17
Cold-collision-shift cancellation and inelastic scattering in a Yb optical lattice clock
Published in Physical review. A, Atomic, molecular, and optical physics (28-11-2011)“…Recently, p-wave cold collisions were shown to dominate the density-dependent shift of the clock transition frequency in a {sup 171}Yb optical lattice clock…”
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18
Determination of the 5d6s 3D1 state lifetime and blackbody radiation clock shift in Yb
Published 02-08-2012“…Phys. Rev. A, 86(5) 051404 (2012) The Stark shift of the ytterbium optical clock transition due to room temperature blackbody radiation is dominated by a…”
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19
Measurement of the Hyperfine Quenching Rate of the Clock Transition in $^{171}$Yb
Published 09-06-2014“…Phys. Rev. Lett. 113, 033003 (18 July 2014) We report the first experimental determination of the hyperfine quenching rate of the $6s^2\ ^1\!S_0\ (F=1/2) -…”
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20
An Atomic Clock with 10—18Instability
Published in Science (American Association for the Advancement of Science) (13-09-2013)“…Atomic clocks have been instrumental in science and technology, leading to innovations such as global positioning, advanced communications, and tests of…”
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Journal Article