Reducing the Instability of an Optical Lattice Clock Using Multiple Atomic Ensembles
Physical Review XThe stability of an optical atomic clock is a critical figure of merit for almost all clock applications. To this end, much optical atomic clock research has focused on reducing clock instability by increasing the atom number, lengthening the coherent ...
Xin Zheng +2 more
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Integrating planar photonics for multi-beam generation and atomic clock packaging on chip. [PDF]
Light Sci Appl, 2023 Ropp C +11 more
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New frequency ratios with a PHz-scale atomic clock
New Journal of Physics, 2016 Atomic clocks are a tour de force when it comes to rigorous tests of measurement. The ultimate validation of one’s careful assessments is to find agreement on a given parameter with a completely independent laboratory.
J J McFerran
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Collinear Three-Photon Excitation of a Strongly Forbidden Optical Clock Transition
Physical Review XThe ^{1}S_{0}-^{3}P_{0} clock transition in strontium serves as the foundation for the world’s best atomic clocks and for gravitational wave detector concepts in clock atom interferometry.
Samuel P. Carman +9 more
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Accelerating the averaging rate of atomic ensemble clock stability using atomic phase lock
New Journal of Physics, 2014 We experimentally demonstrated that the stability of an atomic clock improves at its fastest rate τ ^−1 (where τ is the averaging time) when the phase of a local oscillator is genuinely compared to the continuous phase of many atoms in a single trap (an ...
Nobuyasu Shiga +4 more
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Test of the gravitational redshift with single-photon-based atomic clock interferometers
Quantum FrontiersThe gravitational redshift (GR), as predicted by Einstein’s general theory of relativity, posits that two identical clocks situated at different gravitational potentials will tick at different rates.
Ju Liu +6 more
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High-precision Frequency Drift Compensation Study of High-performance Rubidium Atomic Clock
Chinese Journal of Magnetic ResonanceWith their high reliability, small size and low power consumption, rubidium atomic clocks are widely used in the fields of navigation, communication, etc. In particular, rubidium atomic clocks for navigation satellites have developed excellent stability.
XU Junqiu +5 more
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Enhancing Optical Lattice Clock Coherence Times with Erasure Conversion
PRX QuantumIncreasing coherent interrogation times is central to advancing the precision of optical clocks. Synchronous differential optical clock comparisons have now demonstrated atomic coherence times that far exceed the coherence time of the clock laser.
Shuo Ma +8 more
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Performance of Loran-C chains relative to UTC [PDF]
The long term performance of the eight Loran-C chains in terms of the Coordinated Universal Time (UTC) of the U.S. Naval Observatory (USNO) and the use of the Loran-C navigation system to maintain the user's clock to a UTC scale, are examined. The atomic
Chi, A. R.
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Research on Pressure Compensation for the Rubidium Atomic Clock Working in Atmospheric Environment
Chinese Journal of Magnetic ResonanceVapor cell rubidium atomic clock is widely used in the fields of satellite navigation and communication with advantages including small size, light weight, low power and maintenance cost.
LI Junyao +8 more
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