A strontium optical lattice clock with 1 × 10−17 uncertainty and measurement of its absolute frequency
Sign Up to like & getrecommendations! Published in 2020 at "Metrologia"
DOI: 10.1088/1681-7575/abb530
Abstract: We present a measurement of the absolute frequency of the 5s$^2$ $^1$S$_0$ to 5s5p $^3$P$_0$ transition in $^{87}$Sr, which is a secondary representation of the SI second. We describe the optical lattice clock apparatus used… read more here.
Keywords: frequency; lattice clock; uncertainty; absolute frequency ... See more keywords
A strontium lattice clock with both stability and uncertainty below 5×10−18
Sign Up to like & getrecommendations! Published in 2024 at "Metrologia"
DOI: 10.1088/1681-7575/ad1a4c
Abstract: We report the realization of the closed-loop operation of an optical lattice clock based on 87Sr atoms. A cavity-stabilized 698 nm laser is used to probe the 1S0→3P0 clock transition of strontium atoms trapped in optical… read more here.
Keywords: stability; strontium lattice; clock; lattice clock ... See more keywords
Atomic Coherence of 2 Minutes and Instability of 1.5×10^{-18} at 1 s in a Wannier-Stark Lattice Clock.
Sign Up to like & getrecommendations! Published in 2025 at "Physical review letters"
DOI: 10.1103/3wtv-sty2
Abstract: We explore the limits of atomic coherence and measurement precision in a ^{87}Sr optical lattice clock. We perform a detailed characterization of key effects, including lattice Raman scattering and atomic collisions in a shallow lattice… read more here.
Keywords: coherence minutes; lattice clock; atomic coherence; coherence ... See more keywords
Rashba and Weyl spin-orbit coupling in an optical lattice clock
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.063630
Abstract: Recent experimental realization of one-dimensional (1D) spin-orbit coupling (SOC) for ultracold alkaline-earth(-like) atoms in optical lattice clocks opens a new avenue for exploring exotic quantum matter because of the strongly suppressed heating of atoms from… read more here.
Keywords: lattice clock; optical lattice; rashba weyl; lattice ... See more keywords
Towards an optical clock for space: Compact, high-performance optical lattice clock based on bosonic atoms
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.053443
Abstract: Optical clocks operated on satellites are expected to open up new opportunities in time transfer, geodesy, fundamental physics, and satellite navigation. Here we demonstrate an important first step towards this goal: a modular, compact, optical… read more here.
Keywords: lattice clock; physics; optical lattice; performance ... See more keywords
Doubly Modulated Optical Lattice Clock: Interference and Topology.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.127.033601
Abstract: The quantum system under periodical modulation is the simplest path to understand the quantum nonequilibrium system because it can be well described by the effective static Floquet Hamiltonian. Under the stroboscopic measurement, the initial phase… read more here.
Keywords: topology; phase; optical lattice; lattice clock ... See more keywords
Exploring the Dynamical Interplay between Mass-Energy Equivalence, Interactions, and Entanglement in an Optical Lattice Clock.
Sign Up to like & getrecommendations! Published in 2024 at "Physical review letters"
DOI: 10.1103/physrevlett.134.093201
Abstract: We propose protocols that probe manifestations of the mass-energy equivalence in an optical lattice clock interrogated with spin coherent and entangled quantum states. To tune and uniquely distinguish the mass-energy equivalence effects (gravitational redshift and… read more here.
Keywords: optical lattice; mass energy; energy equivalence; lattice clock ... See more keywords
Hamiltonian engineering of spin-orbit–coupled fermions in a Wannier-Stark optical lattice clock
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.adc9242
Abstract: Engineering a Hamiltonian system with tunable interactions provides opportunities to optimize performance for quantum sensing and explore emerging phenomena of many-body systems. An optical lattice clock based on partially delocalized Wannier-Stark states in a gravity-tilted… read more here.
Keywords: spin orbit; lattice clock; optical lattice; wannier stark ... See more keywords
Recent Advances Concerning the 87Sr Optical Lattice Clock at the National Time Service Center
Sign Up to like & getrecommendations! Published in 2018 at "Applied Sciences"
DOI: 10.3390/app8112194
Abstract: We review recent experimental progress concerning the 87Sr optical lattice clock at the National Time Service Center in China. Hertz-level spectroscopy of the 87Sr clock transition for the optical lattice clock was performed, and closed-loop… read more here.
Keywords: lattice clock; time; concerning 87sr; optical lattice ... See more keywords