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Athreya Shankar
Researcher at University of Colorado Boulder
Publications - 23
Citations - 236
Athreya Shankar is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Penning trap & Laser linewidth. The author has an hindex of 8, co-authored 16 publications receiving 162 citations. Previous affiliations of Athreya Shankar include National Institute of Standards and Technology & University of Innsbruck.
Papers
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Near Ground-State Cooling of Two-Dimensional Trapped-Ion Crystals with More than 100 Ions
Elena Jordan,Kevin Gilmore,Kevin Gilmore,Athreya Shankar,Arghavan Safavi-Naini,Justin G. Bohnet,Murray Holland,John J. Bollinger +7 more
TL;DR: The measured cooling rate is faster than that predicted by single particle theory, consistent with a quantum many-body calculation, and will greatly improve the performance of large trapped ion crystals in quantum information and metrology applications.
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Continuous Real-Time Tracking of a Quantum Phase Below the Standard Quantum Limit
TL;DR: A scheme for continuously measuring the evolving quantum phase of a collective spin composed of N pseudospins, providing real-time phase estimation significantly more precise than the standard quantum limit of Δϕ_{SQL}=1/sqrt[N] rad.
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Squeezed state metrology with Bragg interferometers operating in a cavity
Athreya Shankar,Leonardo Salvi,Maria Luisa Chiofalo,Maria Luisa Chiofalo,Nicola Poli,Murray Holland +5 more
TL;DR: In this paper, a spin squeezing protocol is applied to momentum pseudospins to study the effects of the momentum width of the atomic cloud and the coupling to momentum states outside the pseudospin manifold.
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Steady-state spin synchronization through the collective motion of trapped ions
TL;DR: In this paper, an experimental scheme for mesoscopic collective steady-state spin synchronization with ion-trap systems is proposed, where the synchronization in the primary species of ions is mediated by the dissipation of a normal vibrational mode induced by sympathetic cooling with the secondary species of ion.
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Rugged mHz-Linewidth Superradiant Laser Driven by a Hot Atomic Beam
Haonan Liu,Simon B. Jäger,X. J. Yu,Steven Touzard,Athreya Shankar,Murray Holland,Travis Nicholson +6 more
TL;DR: It is shown that the theoretical minimum linewidth and maximum power are competitive with the best ultracoherent clock lasers, and the system operates naturally in continuous wave mode, which has been elusive for superradiant lasers so far.