Alexey V. Gorshkov
University of Maryland, College Park
OpticsQuantum entanglementPhysicsStatistical physicsElectromagnetically induced transparencyPhotonQuantum simulatorQuantum informationHamiltonian (quantum mechanics)Bound stateAtomic physicsMaterials scienceQubitCondensed matter physicsIsing modelQuantum computerQuantum mechanicsRydberg formulaQuantumOptical latticeDissipative system
345Publications
55H-index
8,147Citations
Publications 320
Newest
#1Marcin KalinowskiH-Index: 1
#2Yidan WangH-Index: 3
Last. Alexey V. GorshkovH-Index: 55
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Rydberg polaritons provide an example of a rare type of system where three-body interactions can be as strong or even stronger than two-body interactions. The three-body interactions can be either dispersive or dissipative, with both types possibly giving rise to exotic, strongly-interacting, and topological phases of matter. Despite past theoretical and experimental studies of the regime with dispersive interaction, the dissipative regime is still mostly unexplored. Using a renormalization grou...
Quantum computers and simulators may offer significant advantages over their classical counterparts, providing insights into quantum many-body systems and possibly improving performance for solving exponentially hard problems, such as optimization and satisfiability. Here we report the implementation of a low-depth Quantum Approximate Optimization Algorithm (QAOA) using an analog quantum simulator. We estimate the ground state energy of the Transverse Field Ising Model with long-range interactio...
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#2Benjamin M. SparH-Index: 7
Last. Waseem BakrH-Index: 23
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We induce strong non-local interactions in a 2D Fermi gas in an optical lattice using Rydberg dressing. The system is approximately described by a t-Vmodel on a square lattice where the fermions experience isotropic nearest-neighbor interactions and are free to hop only along one direction. We measure the interactions using many-body Ramsey interferometry and study the lifetime of the gas in the presence of tunneling, finding that tunneling does not reduce the lifetime. To probe the interplay...
#2Benjamin M. SparH-Index: 7
Last. Waseem Bakr (Princeton University)H-Index: 23
view all 9 authors...
We induce strong non-local interactions in a 2D Fermi gas in an optical lattice using Rydberg dressing. The system is approximately described by a t-Vmodel on a square lattice where the fermions experience isotropic nearest-neighbor interactions and are free to hop only along one direction. We measure the interactions using many-body Ramsey interferometry and study the lifetime of the gas in the presence of tunneling, finding that tunneling does not reduce the lifetime. To probe the interplay...
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#1Minh C. TranH-Index: 12
#2Abhinav DeshpandeH-Index: 7
Last. Alexey V. GorshkovH-Index: 55
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We present an optimal protocol for encoding an unknown qubit state into a multiqubit Greenberger-Horne-Zeilinger-like state and, consequently, transferring quantum information in large systems exhibiting power-law (1/r^\alpha interactions. For all power-law exponents \alphabetween dand 2d+1 where dis the dimension of the system, the protocol yields a polynomial speedup for \alpha>2dand a superpolynomial speedup for \alpha\leq 2d compared to the state of the art. For all $\al...
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#1Ron BelyanskyH-Index: 8
#2Przemyslaw BieniasH-Index: 14
Last. Brian SwingleH-Index: 37
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We study quantum information scrambling in spin models with both long-range all-to-all and short-range interactions. We argue that a simple global, spatially homogeneous interaction together with local chaotic dynamics is sufficient to give rise to fast scrambling, which describes the spread of quantum information over the entire system in a time that is logarithmic in the system size. This is illustrated in two exactly solvable models: (1) a random circuit with Haar random local unitaries and a...
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#3Andrew Hachtel (NIST: National Institute of Standards and Technology)H-Index: 3
We present a high efficiency single photon source based on a Rydberg ensemble. Additionally, we demonstrate Hong Ou Mandel interference between photons from this source and photons generated from a trapped barium ion.
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#1Rex Lundgren (NIST: National Institute of Standards and Technology)H-Index: 1
#2Alexey V. GorshkovH-Index: 55
Last. Mohammad F. MaghrebiH-Index: 18
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The Dicke model famously exhibits a phase transition to a superradiant phase with a macroscopic population of photons and is realized in multiple settings in open quantum systems. In this paper, we study a variant of the Dicke model where the cavity mode is lossy due to the coupling to a Markovian environment while the atomic mode is coupled to a colored bath. We analytically investigate this model by inspecting its low-frequency behavior via the Schwinger-Keldysh field theory and carefully exam...
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#1Igor BoettcherH-Index: 13
#2Przemyslaw BieniasH-Index: 14
Last. Alexey V. GorshkovH-Index: 55
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We show how quantum many-body systems on hyperbolic lattices with nearest-neighbor hopping and local interactions can be mapped onto quantum field theories in continuous negatively curved space. The underlying lattices have recently been realized experimentally with superconducting resonators and therefore allow for a table-top quantum simulation of quantum physics in curved background. Our mapping provides a computational tool to determine observables of the discrete system even for large latti...
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#1Przemyslaw BieniasH-Index: 14
#2Michael GullansH-Index: 28
Last. Alexey V. GorshkovH-Index: 55
view all 8 authors...
Ultracold systems offer an unprecedented level of control of interactions between atoms. An important challenge is to achieve a similar level of control of the interactions between photons. Towards this goal, we propose a realization of a novel Lennard-Jones-like potential between photons coupled to the Rydberg states via electromagnetically induced transparency (EIT). This potential is achieved by tuning Rydberg states to a F{\"o}rster resonance with other Rydberg states. We consider few-body p...
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