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Microscopic dynamics and an effective Landau-Zener transition in the quasi-adiabatic preparation of spatially ordered states of Rydberg excitations
A. F. Tzortzakakis, D. Petrosyan, M. Fleischhauer +1
We examine the adiabatic preparation of spatially-ordered Rydberg excitations of atoms in finite one-dimensional lattices by frequency-chirped laser pulses, as realized in a number…
Cavity Quantum Electrodynamics Effects with Nitrogen Vacancy Center Spins in Diamond and Microwave Resonators at Room Temperature
Yuan Zhang, Qilong Wu, Shi-Lei Su +3
Cavity quantum electrodynamics (C-QED) effects, such as Rabi splitting, Rabi oscillations and superradiance, have been demonstrated with nitrogen vacancy center spins in diamond in…
Free-Fermion Multiply Excited Eigenstates and Their Experimental Signatures in 1D Arrays of Two-Level Atoms
Yu-Xiang Zhang, Klaus Mølmer
One-dimensional (1D) subwavelength atom arrays display multiply excited subradiant eigenstates which are reminiscent of free fermions. So far, these states have been associated wit…
Quantum estimation of a time dependent perturbation
Claus Normann Madsen, Lia Valdetaro, Klaus Mølmer
We analyze the estimation of a time dependent perturbation acting on a continuously monitored quantum system. We describe the temporal fluctuations of the perturbation by a Hidden…
Active Frequency Measurement on Superradiant Strontium Clock Transitions
Yuan Zhang, Chongxin Shan, Klaus Mølmer
We develop a stochastic mean-field theory to describe active frequency measurements of pulsed superradiant emission, studied in recent experiments with strontium-87 atoms trapped i…
A Superradiant Maser with Nitrogen-Vacancy Center Spins
Qilong Wu, Yuan Zhang, Xigui Yang +3
Recent experiments have demonstrated Rabi-oscillations, superradiant pulses and stimulated emission from negatively-charged nitrogen-vacancy () center spins in mic…