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Search Publications by: Alexey Gorshkov (Fed)

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Displaying 101 - 115 of 115

Anomalous broadening in driven dissipative Rydberg systems

March 16, 2016
Author(s)
Elizabeth A. Goldschmidt, Thomas L. Boulier, Roger C. Brown, Silvio B. Koller, Jeremy T. Young, Alexey V. Gorshkov, S L. Rolston, James V. Porto
We observe interaction-induced broadening of the two-photon 5s-18s transition in 87Rb atoms trapped in a 3D optical lattice. The measured linewidth increases by nearly two orders of magnitude with increasing atomic density and excitation strength, with

Coulomb bound states of strongly interacting photons

September 18, 2015
Author(s)
Mohammad F. Maghrebi, Michael Gullans, Przemek Bienias, Soonwon Choi, Ivar Martin, Ofer Firstenberg, Mikhail D. Lukin, Hans Peter Buchler, Alexey Gorshkov
We show that two photons coupled to Rydberg states via electromagnetically induced transparency can interact via an effective Coulomb potential. This interaction gives rise to a continuum of two-body bound states. Within the continuum, metastable bound

Nearly-linear light cones in long-range interacting quantum systems

April 13, 2015
Author(s)
Michael S. Foss-Feig, Zhexuan Gong, Charles W. Clark, Alexey V. Gorshkov
In non-relativistic quantum theories with short-range Hamiltonians, a velocity $v$ can be chosen such that the influence of any local perturbation is approximately confined to within a distance $r$ until a time $t \sim r/v$, thereby defining a linear light

Fractional Quantum Hall States of Rydberg Polaritons

March 31, 2015
Author(s)
Mohammad F. Maghrebi, Norman Y. Yao, Mohammad Hafezi, Thomas Pohl, Ofer Firstenberg, Alexey Gorshkov
We propose a scheme for realizing fractional quantum Hall states of light. In our scheme, photons of two polarizations are coupled to Rydberg atoms via auxiliary classical control fields to form two flavors of Rydberg polaritons, effective spin up and spin

Scattering resonances and bound states for strongly interacting Rydberg polaritons

November 3, 2014
Author(s)
Przemek Bienias, Soonwon Choi, Ofer Firstenberg, Mohammad F. Maghrebi, Mikhail Lukin, Alexey Gorshkov, Hans Peter Buchler
We provide a rigorous framework describing a low-density gas of slow-light polaritons propagating in one dimension under the conditions of electromagnetically induced transparency and interacting via strong Rydberg-Rydberg interactions. Specifically, we

Kitaev chains with long-range interactions

October 9, 2014
Author(s)
Davide Vodola, Luca Lepori, Elisa Ercolessi, Alexey Gorshkov, Guido Pupillo
We propose and analyze a generalization of the Kitaev chain for fermions with long-range p-wave pairing, which decays with distance as a power-law with exponent $\alpha$. Using the integrability of the model, we demonstrate the existence of two types of

Persistence of locality in systems with power-law interactions

July 16, 2014
Author(s)
Zhexuan Gong, Michael S. Foss-Feig, Spyridon Michalakis, Alexey Gorshkov
Motivated by recent experiments with ultra-cold matter, we derive a new bound on the propagation of information in D- dimensional lattice models exhibiting 1/r^alpha interactions with alpha > D. The bound contains two terms: One accounts for the short

Non-local propagation of correlations in long-range interacting quantum systems

July 10, 2014
Author(s)
Phil Richerme, Zhexuan Gong, Aaron Lee, Crystal Senko, Jacob Smith, Michael S. Foss-Feig, Spyridon Michalakis, Alexey Gorshkov, Christopher Monroe
The maximum speed with which information can propagate in a quantum many-body system directly affects how quickly disparate parts of the system can become correlated and how difficult the system will be to describe numerically. For systems with only short

Beyond the spin model approximation for Ramsey spectroscopy

March 26, 2014
Author(s)
A Koller, M Beverland, Alexey Gorshkov, Ana Maria Rey
Ramsey spectroscopy has become a powerful technique for probing non-equilibrium dynamics of internal (pseudospin) degrees of freedom of interacting systems. In many theoretical treatments, the key to understanding the dynamics has been to assume the