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[Fizinfo] Tuesday 14:15 - Elnaz Darsheshdar on coupled two-level emitters

From: Andras Palyi <palyi.andras AT ttk.bme.hu>
To: exotic-quantum-phases-seminar AT googlegroups.com, FIZINFO AT lists.kfki.hu
Subject: [Fizinfo] Tuesday 14:15 - Elnaz Darsheshdar on coupled two-level emitters
Date: Fri, 1 Oct 2021 17:58:37 +0200
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Dear Colleagues,

The BME Exotic Quantum Phases seminar continues on Tuesday at 14:15 with this
talk:

Elnaz Darsheshdar (University of Kurdistan)
Spectral Properties of Coupled Two-Level Emitters

online in Teams
Time: Oct 5 Tuesday, 14:15
Abstract: see below

Teams link:
https://teams.microsoft.com/l/meetup-join/19%3a98c537f3ff3a433983cc04579e4603af%40thread.tacv2/1633103688869?context=%7b%22Tid%22%3a%226a3548ab-7570-4271-91a8-58da00697029%22%2c%22Oid%22%3a%22f8b27e90-dbca-4bb5-813c-d6415577ec35%22%7d

Best regards,
Andras Palyi

= = =

Title: Spectral Properties of Coupled Two-Level Emitters

Abstract: Spectral filtering allows us to manipulate the collected light
statistics and the resonances induced by dipole-dipole interactions give rise
to specific correlations, where the time symmetry of the correlations is
broken. Based on the collective dressed states, we will explain that the
study encompasses both the case of real processes, where the photons are
associated with specific resonances and classical correlations between each
other, and virtual processes, where pairs of photons are emitted with non-
classical correlations. On the other hand, the dipole-dipole interactions
give rise to new sidebands in the fluorescence spectrum due to specific
couplings among the collective dressed levels which in turn depends on the
spatial configuration of atoms. These couplings are the main responsible for
the frequencies and variety of sidebands. We will explain the general method
for finding the dressed energy levels for a system of any number of strongly
coupled atoms and we solve this problem for two different spatial
configurations of three coupled two-level emitters. We show that the coupling
among dressed levels and consequently energies and number of sidebands in the
fluorescence spectrum are different for each configuration. Thus, the
fluorescence spectrum of strongly interacting atoms contains information
about the number and configuration of atoms.

[Fizinfo] Tuesday 14:15 - Elnaz Darsheshdar on coupled two-level emitters, Andras Palyi, 10/01/2021