784 citations · 2.2k across the 22 of their papers we have counts for
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Matrix product states and the decay of quantum conditional mutual information
Pavel Svetlichnyy, Shivan Mittal, T. A. B. Kennedy
A uniform matrix product state defined on a tripartite system of spins, denoted by is shown to be an approximate quantum Markov chain when the size of subsystem denoted…
Entanglement of neutral-atom chains by spin-exchange Rydberg interaction
Xiao-Feng Shi, F. Bariani, T. A. B. Kennedy
Conditions to achieve an unusually strong Rydberg spin-exchange interaction are investigated and proposed as a means to generate pairwise entanglement and realize a SWAP-like quant…
Dephasing dynamics of Rydberg atom spin waves
F. Bariani, Paul M. Goldbart, T. A. B. Kennedy
A theory of Rydberg atom interactions is used to derive analytical forms for the spin wave pair correlation function in laser-excited cold-atom vapors. This function controls the q…
Retrieval of multiple spin waves from a weakly excited, metastable atomic ensemble
F. Bariani, T. A. B. Kennedy
The emission of light from a multiply excited atomic ensemble is examined and it is shown how symmetric (spin-wave) and non-symmetric states of excitation radiate into spatially se…
Dephasing of multiparticle Rydberg excitations for fast entanglement generation
F. Bariani, Y. O. Dudin, T. A. B. Kennedy +1
An approach to fast entanglement generation based on Rydberg dephasing of collective excitations (spin-waves) in large, optically thick atomic ensembles is proposed. Long-range $1/…
Efficiency of light-frequency conversion in an atomic ensemble
H. H. Jen, T. A. B. Kennedy
The efficiency of frequency up and down conversion of light in an atomic ensemble, with a diamond level configuration, is analyzed theoretically. The conditions of pump field inten…