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Akademický článek

Excess Noise and Photoinduced Effects in Highly Reflective Crystalline Mirror Coatings

Autor: Jialiang Yu, Sebastian Häfner, Thomas Legero, Sofia Herbers, Daniele Nicolodi, Chun Yu Ma, Fritz Riehle, Uwe Sterr, Dhruv Kedar, John M. Robinson, Eric Oelker, Jun Ye

Publikováno v: Physical Review X, Vol 13, Iss 4, p 041002 (2023)

Thermodynamically induced length fluctuations of high-reflectivity mirror coatings put a fundamental limit on sensitivity and stability of precision optical interferometers like gravitational-wave detectors and ultrastable lasers. The main contributi

Externí odkaz: https://doaj.org/article/13d900125e514b71ac2ed52c83c3bb98

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Akademický článek

Optical atomic clock comparison through turbulent air

Publikováno v: Physical Review Research, Vol 2, Iss 3, p 033395 (2020)

We use frequency-comb-based optical two-way time-frequency transfer (O-TWTFT) to measure the optical frequency ratio of state-of-the-art ytterbium and strontium optical atomic clocks separated by a 1.5-km open-air link. Our free-space measurement is

Externí odkaz: https://doaj.org/article/73e8b65a1e2d4fd4b5b0a1350a920fb7

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Half-minute-scale atomic coherence and high relative stability in a tweezer clock

Autor: Adam Kaufman, Nathan Schine, William J. Eckner, Dhruv Kedar, Aaron W. Young, Eric Oelker, Jun Ye, Matthew A. Norcia, William R. Milner

Publikováno v: Nature. 588:408-413

The preparation of large, low-entropy, highly coherent ensembles of identical quantum systems is fundamental for many studies in quantum metrology1, simulation2 and information3. However, the simultaneous realization of these properties remains a cen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ece6f7a85f1f4ab6e679e1c04a7d2f4
https://doi.org/10.1038/s41586-020-3009-y

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Resolving the gravitational redshift across a millimetre-scale atomic sample

Autor: Tobias Bothwell, Colin J. Kennedy, Alexander Aeppli, Dhruv Kedar, John M. Robinson, Eric Oelker, Alexander Staron, Jun Ye

Einstein’s theory of general relativity states that clocks at different gravitational potentials tick at different rates relative to lab coordinates—an effect known as the gravitational redshift1. As fundamental probes of space and time, atomic c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70884b109137b37e4090a4c9c6a8afea
https://eprints.gla.ac.uk/264685/2/264685.pdf

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Hamiltonian engineering of spin-orbit coupled fermions in a Wannier-Stark optical lattice clock

Autor: Alexander Aeppli, Anjun Chu, Tobias Bothwell, Colin J. Kennedy, Dhruv Kedar, Peiru He, Ana Maria Rey, Jun Ye

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 s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa4370fd34ffde56ae681e6ef6e2a029
http://arxiv.org/abs/2201.05909

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Thermal noise and mechanical loss of SiO

Autor: John M, Robinson, Eric, Oelker, William R, Milner, Dhruv, Kedar, Wei, Zhang, Thomas, Legero, Dan G, Matei, Sebastian, Häfner, Fritz, Riehle, Uwe, Sterr, Jun, Ye

Publikováno v: Optics letters. 46(3)

Mechanical loss of dielectric mirror coatings sets fundamental limits for both gravitational wave detectors and cavity-stabilized optical local oscillators for atomic clocks. Two approaches are used to determine the mechanical loss: ringdown measurem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::01c3540852f1a14622f9712cc8b3cafc
https://pubmed.ncbi.nlm.nih.gov/33528416

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