THESIS
2018
xvii, 103, that is, xviii, 103 pages : illustrations ; 30 cm
Abstract
Producing and manipulating controllable quantum states of atoms and photons are of
great interest not only for probing fundamental quantum physics but also for developing future
quantum technology. Modern technology allows us to understand atom-photon interaction
from various perspectives. In this PhD thesis research work, I will describe two different
approaches to study atoms and photons in quantum regime.
In atomic, molecule and optical (AMO) physics, ultracold atoms exhibit their values and
potentials in acting as platforms for investigating many-body physics. Here I describe our
recent effort in producing a Bose-Einstein condensate of
174Yb atoms and a degenerate Fermi
gas of
173Yb atoms. Those atomic systems can be used to simulate many-body physics, which
cannot be found...[
Read more ]
Producing and manipulating controllable quantum states of atoms and photons are of
great interest not only for probing fundamental quantum physics but also for developing future
quantum technology. Modern technology allows us to understand atom-photon interaction
from various perspectives. In this PhD thesis research work, I will describe two different
approaches to study atoms and photons in quantum regime.
In atomic, molecule and optical (AMO) physics, ultracold atoms exhibit their values and
potentials in acting as platforms for investigating many-body physics. Here I describe our
recent effort in producing a Bose-Einstein condensate of
174Yb atoms and a degenerate Fermi
gas of
173Yb atoms. Those atomic systems can be used to simulate many-body physics, which
cannot be found in conventional electron-based systems.
On the side of photons, we study an electromagnetically induced transparency (EIT)
based quantum heat engine (QHE), which employs cold atoms as working substance. We
experimentally constructed this QHE and demonstrated directional thermal radiation with a
spectral brightness that is about 9 times higher than that of the ambient pumping reservoir.
This nontraditional coherence-based QHE violates detailed balance and Kirchhoffs law.
At last, I will discuss our ongoing effort in building a cold atomic ensemble embedded
in a cavity system for studying cavity quantum electrodynamics (CQED), coupling between
photons and atoms is achieved via the combination of the resonance enhancement of a cavity
and a collective enhancement of an ensemble.
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