Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 21 for “"single-photon source"”.
-
DEPLOYED QUANTUM KEY DISTRIBUTION WITH A ROOM-TEMPERATURE TELECOM SINGLE PHOTON SOURCE
… Pulses have achieved impressive key rates as QKD sources, efficient and scalable quantum light sources that are compatible with standard telecommunication infrastructure offers new perspectives for the practical deployment of QKD and other quantum information technologies, due to the compact setup …
-
A Single-photon Source Based on a Lateral n-i-p Junction Driven by a Surface Acoustic Wave
Single-photon sources are essential building blocks in quantum photonic networks, where quantum-mechanical properties of photons are utilised to achieve quantum technologies such as quantum cryptography and quantum computing. In this thesis, a single-photon source driven by a surface acoustic wave …
-
Testing the limits of human vision with quantum states of light
… progress towards testing whether humans can see single photons, using a single-photon source based on spontaneous parametric downconversion and techniques from quantum optics. We review the existing evidence on single-photon vision, and show why no previous experiments with classical light …
-
High-dimensional Quantum Key Distribution with Frequency Encoding
Time-energy entanglement is a quintessential resource for emerging quantum technologies. In this thesis, we harness this resource for applications such as quantum communication and quantum networking. In the first part of this thesis, we demonstrate an indistinguishable heralded single-photon …
-
Development of potential-based time domain integral equations for quantum electrodynamics modeling
… quantized field operators produced by a single photon source built from a transmon qubit.
-
Optimized resources for efficient optical quantum information processing and sensing
… dissertation explores the role of optimized resources in facilitating efficient optical quantum information processing and sensing. Three key applications are considered: quantum interferometry, detector characterization, and multi-photon processing. For each application, we examine the …
-
New opportunities for photon storage and detection: an exploration of a high-efficiency optical quantum memory and the quantum capabilities of the human eye
… develop new ways of manipulating and detecting photons. Here, we discuss our efforts toward developing two separate quantum optics experiments that can provide great insight into the development of quantum devices. We begin by discussing our work to investigate the lower threshold of human …
-
Efficient quantum optical state engineering and applications
… of light by Albert Einstein, a reliable source of this simple quantum state of one photon does not exist. While common light sources such as a light bulb, LED, or laser can produce a pulse of light with an average of one photon, there is (currently) no way of knowing the number of photons …
-
Integrated optical components for quantum key distribution
… trapdoor functions. However, as computational resources become more abundant with the fast development of super- and quantum computers, relying on such methods for communication security becomes risky. Quantum key distribution (QKD), is a potential solution that can allow theoretically secure key …
-
The application of GHz bandwidth electrical pulses to a single semiconductor quantum dot.
… starting point for the creation of a qubit. A single quantum dot embedded within a chargetunable heterostructure can be optically isolated using confocal microscopy, and electrically manipulated using an applied voltage. This thesis presents progress towards full opto-electrical control over a …
-
A Quantum Light Source for Quantum Information Applications in the Telecom C-Band
Semiconductor quantum dot (QD) quantum light sources have long been established as suitable candidates for many quantum information applications, due to the on-demand emission of highly pure and highly indistinguishable single and entangled photons. A key factor in the development of this …
-
Quantum control of optically active defects in the solid state
… devices. In 1997, it was demonstrated that a single nitrogen-vacancy (NV) center defect in diamond could act as a stable single photon source [1]. In the same study, the electronic spin of the same defect was optically initialized and read out. Remarkably, both of these achievements occurred …
-
SAW-driven single-photon sources and photon detectors fabricated on an undoped GaAs/AlGaAs quantum well
… interest in quantum information systems based on photonic qubits. Devices able to emit pure single-photon states on demand and detect incoming single photons in the system are fundamental building blocks for the realisation of a quantum photonic scheme. Advances in controlling single carriers have …
-
Development of self-assembled hyperbolic metamaterial-based photonic devices for enhanced single-photon sources
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Tomographic quantum cryptography with bell diagonal states
… the security of the tomographic protocol using a source which produces entangled photons via an experimental scheme proposed in Phys. Rev. Lett. 92, 37903 (2004) will be analyzed. The range of experimental parameters for which the protocol is secure will be determined.
-
Multiphoton correlations and emitters
… its first stages. A deterministic or on-demand single-photon source and, more recently, an N-photon emitter, seem to play a crucial role. Nevertheless, even the correct characterisation of the former is still a source of discussion and there exist several criteria to do so. The identification of …
-
Towards ultrafast quantum processing: generation and storage of ultrafast photonic quantum states
… information theory. I motivate the use of single photons as the quantum particles of choice for this task, and I describe the open challenges facing the field of researchers embarking on this quest. This motivation pervades each subsequent chapter of this thesis, which focus in turn on …
-
AN EXPLORATION OF DEFECT-BASED SINGLE PHOTON SOURCES: ZINC OXIDE AND HEXAGONAL BORON NITRIDE
… point defects in wide bandgap semiconductors are single photon sources with applications in quantum optics, precision sensing, and quantum information processing technologies. Although the nitrogen-vacancy center in diamond has historically garnered the most attention, efforts to discover novel …
-
Fabrication and characterization of telecom quantum emitter in silicon for quantum technology applications.
L'abstract è presente nell'allegato / the abstract is in the attachment
Page 1 of 2