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8 papers · 2 filters
Lasing and high temperature phase transitions in atomic systems with dressed state polaritons
I. Yu. Chestnov, A. P. Alodjants, S. M. Arakelian
We consider the fundamental problem of high temperature phase transitions in the system of high density two-level atoms off-resonantly interacting with a pump field in the presence…
Measurement of the 5D Level Polarizabilty in Laser Cooled Rb atoms
S. Snigirev, A. Golovizin, D. Tregubov +5
We report on accurate measurements of the scalar and tensor polarizabilities of the 5D fine structure levels 5D3/2 and 5D5/2 in Rb. The measured values show reasonable corresponden…
Coherent control of mesoscopic atomic ensembles for quantum information
I. I. Beterov, M. Saffman, V. P. Zhukov +8
We discuss methods for coherently controlling mesoscopic atomic ensembles where the number of atoms varies randomly from one experimental run to the next. The proposed schemes are…
Implementation of a Quantum Metamaterial
Pascal Macha, Gregor Oelsner, Jan-Michael Reiner +7
Manipulating the propagation of electromagnetic waves through sub-wavelength sized artificial structures is the core function of metamaterials. Resonant structures, such as split r…
Tomographic causal analysis of two-qubit states and tomographic discord
Evgeny Kiktenko, Aleksey Fedorov
We study a behavior of two-qubit states subject to tomographic measurement. We propose a novel approach to definition of asymmetry in quantum bipartite state based on its tomograph…
Enhanced index of refraction in four-wave mixing media
Elena Kuznetsova, Renuka Rajapakse, Susanne F. Yelin
Refractive index enhancement accompanied by vanishing absorption in a four-level atomic system interacting with two control and two probe fields in a regime of four-wave mixing (FW…