عنوان

Chiral Quantum Optics Using Topological Photonics

Number

TL57200

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Chiral Quantum Optics Using Topological Photonics

General Material Designation

[Thesis]

First Statement of Responsibility

Barik, Sabaysachi

Subsequent Statement of Responsibility

Waks, Edo

Name of Publisher, Distributor, etc.

University of Maryland, College Park

Date of Publication, Distribution, etc.

2020

Text of Note

111 p.

Dissertation or thesis details and type of degree

Ph.D.

Body granting the degree

University of Maryland, College Park

Text preceding or following the note

2020

Text of Note

Topological photonics has opened new avenues to designing photonic devices along with opening a plethora of applications. Recently, even though there have been many interesting studies in topological photonics in the classical domain, the quantum regime has remained largely unexplored. In this thesis, I will demonstrate a recently developed topological photonic crystal structure for interfacing a single quantum dot spin with a photon to realize light-matter interaction with topolog-ical photonic states. Developed on a thin slab of Gallium Arsenide(GaAs) mem- brane with electron beam lithography, such a device supports two robust counter- propagating edge states at the boundary of two distinct topological photonic crystals at near-IR wavelength. I will show the chiral coupling of circularly polarized lights emitted from a single Indium Arsenide(InAs) quantum dot under a strong magnetic field into these topological edge modes. Owing to the topological nature of these guided modes, I will demonstrate this photon routing to be robust against sharp corners along the waveguide. Additionally, taking it further into the cavity-QED regime, we will build a topological photonic crystal resonator. This new type of resonator will be based on valley-Hall topological physics and sustain two counter- propagating resonator modes. Thanks to the robustness of the topological edge modes to sharp bends, the newly formed resonators can take various shapes, the simplest one being a triangular optical resonator. We will study the chiral coupling of such resonator modes with a single quantum dot emission. Moreover, we will show an intensity enhancement of a single dot emission when it resonantly couples with a cavity mode. This new topological photonic crystal platform paves paths for fault-tolerant complex photonic circuits, secure quantum computation, and explor- ing unconventional quantum states of light and chiral spin networks.

Subject Term

Physics

Subject Term

Quantum physics

Barik, Sabaysachi

Waks, Edo

University of Maryland, College Park

Electronic name

p

[Thesis]

276903

a

Y