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pro vyhledávání: '"LIU, Albert"'
Two-dimensional terahertz spectroscopy (2DTS) is a low-frequency analogue of two-dimensional optical spectroscopy that is rapidly maturing as a probe of a wide variety of condensed matter systems. However, a persistent problem of 2DTS is the long exp
Externí odkaz:
http://arxiv.org/abs/2409.13101
Autor:
Liu, Albert
Multidimensional spectroscopy has a long history originating from nuclear magnetic resonance, and has now found widespread application at infrared and optical frequencies as well. However, the energy scales of traditional multidimensional probes have
Externí odkaz:
http://arxiv.org/abs/2409.03719
Autor:
Liu, Albert, Disa, Ankit
Publikováno v:
Optics Express 32, 16 (2024)
Recently, two-dimensional terahertz spectroscopy (2DTS) has attracted increasing attention for studying complex solids. A number of recent studies have applied 2DTS either with long pulses or away from any material resonances, situations that yield u
Externí odkaz:
http://arxiv.org/abs/2405.00971
Autor:
Salvador, Alex Gómez, Dolgirev, Pavel E., Michael, Marios H., Liu, Albert, Pavicevic, Danica, Fechner, Michael, Cavalleri, Andrea, Demler, Eugene
Two-dimensional terahertz spectroscopy (2DTS), a terahertz analogue of nuclear magnetic resonance, is a new technique poised to address many open questions in complex condensed matter systems. The conventional theoretical framework used ubiquitously
Externí odkaz:
http://arxiv.org/abs/2401.05503
Autor:
Liu, Albert
Publikováno v:
Advanced Quantum Technologies 7, 3 (2024)
Multidimensional coherent spectroscopy is a powerful tool to characterize nonlinear optical response functions. Typically, multidimensional spectra are interpreted via a perturbative framework that straightforwardly provides intuition into the densit
Externí odkaz:
http://arxiv.org/abs/2311.05458
Autor:
Liu, Albert, Pavicevic, Danica, Michael, Marios H., Salvador, Alex G., Dolgirev, Pavel E., Fechner, Michael, Disa, Ankit S., Lozano, Pedro M., Li, Qiang, Gu, Genda D., Demler, Eugene, Cavalleri, Andrea
Publikováno v:
Nature Physics 20, 1751-1756 (2024)
Inhomogeneities play a crucial role in determining the properties of quantum materials. Yet methods that can measure these inhomogeneities are few, and apply to only a fraction of the relevant microscopic phenomena. For example, the electronic proper
Externí odkaz:
http://arxiv.org/abs/2308.14849
Autor:
Talwar, Kunal, Wang, Shan, McMillan, Audra, Jina, Vojta, Feldman, Vitaly, Bansal, Pansy, Basile, Bailey, Cahill, Aine, Chan, Yi Sheng, Chatzidakis, Mike, Chen, Junye, Chick, Oliver, Chitnis, Mona, Ganta, Suman, Goren, Yusuf, Granqvist, Filip, Guo, Kristine, Jacobs, Frederic, Javidbakht, Omid, Liu, Albert, Low, Richard, Mascenik, Dan, Myers, Steve, Park, David, Park, Wonhee, Parsa, Gianni, Pauly, Tommy, Priebe, Christian, Rishi, Rehan, Rothblum, Guy, Scaria, Michael, Song, Linmao, Song, Congzheng, Tarbe, Karl, Vogt, Sebastian, Winstrom, Luke, Zhou, Shundong
We revisit the problem of designing scalable protocols for private statistics and private federated learning when each device holds its private data. Locally differentially private algorithms require little trust but are (provably) limited in their u
Externí odkaz:
http://arxiv.org/abs/2307.15017
Autor:
McMillan, Audra, Javidbakht, Omid, Talwar, Kunal, Briggs, Elliot, Chatzidakis, Mike, Chen, Junye, Duchi, John, Feldman, Vitaly, Goren, Yusuf, Hesse, Michael, Jina, Vojta, Katti, Anil, Liu, Albert, Lyford, Cheney, Meyer, Joey, Palmer, Alex, Park, David, Park, Wonhee, Parsa, Gianni, Pelzl, Paul, Rishi, Rehan, Song, Congzheng, Wang, Shan, Zhou, Shundong
Privately learning statistics of events on devices can enable improved user experience. Differentially private algorithms for such problems can benefit significantly from interactivity. We argue that an aggregation protocol can enable an interactive
Externí odkaz:
http://arxiv.org/abs/2211.10082