Hubble Constant Measurement from Three Large-Separation Quasars Strongly Lensed by Galaxy Clusters

Posted by Chicago

Kavli Affiliate: Michael D. Gladders | First 5 Authors: Kate Napier, Keren Sharon, Håkon Dahle, Matthew Bayliss, Michael D. Gladders | Summary: Tension between cosmic microwave background-based and distance ladder-based determinations of the Hubble constant ${rm H}_{rm 0}$ motivates pursuit of independent methods that are not subject to the same systematic effects. A promising alternative, […]


Continue.. Hubble Constant Measurement from Three Large-Separation Quasars Strongly Lensed by Galaxy Clusters

Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime

Posted by klaurent Delft

Kavli Affiliate: Simon Groblacher | First 5 Authors: Thomas Luschmann, Alexander Jung, Stephan Geprägs, Franz X. Haslbeck, Achim Marx | Summary: Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based on LNO thin films have become commercially available. Here, we […]


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Soliton pulse pairs at multiple colors in normal dispersion microresonators

Posted by dbos Caltech

Kavli Affiliate: Kerry Vahala | First 5 Authors: Zhiquan Yuan, Maodong Gao, Yan Yu, Heming Wang, Warren Jin | Summary: Soliton microcombs are helping to advance the miniaturization of a range of comb systems. These combs mode lock through the formation of short temporal pulses in anomalous dispersion resonators. Here, a new microcomb is demonstrated […]


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Engineered zero-dispersion microcombs using CMOS-ready photonics

Posted by klaurent Caltech

Kavli Affiliate: Kerry Vahala | First 5 Authors: Qing-Xin Ji, Warren Jin, Lue Wu, Yan Yu, Zhiquan Yuan | Summary: Normal group velocity dispersion (GVD) microcombs offer high comb line power and high pumping efficiency compared to bright pulse microcombs. The recent demonstration of normal GVD microcombs using CMOS-foundry-produced microresonators is an important step towards […]


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