Conveners
W-POS-E #28-40 Poster Session (DAMOPC) / Session d'affiches (DPAMOC))
- Nisha Rani Agarwal (University of Ontario Institute of Technology)
W-POS-E #28-40 Poster Session (DAMOPC) / Session d'affiches (DPAMOC))
- Nisha Rani Agarwal (University of Ontario Institute of Technology)
Trapped ions can offer a functional platform for quantum simulation of many-body Hamiltonians modeled by spin-systems. Programmable, arbitrary and precise control over each ion is required in order to tune ion-ion interactions, which translate to diverse parameters of the system under study. Current technologies suffer from scalability issues to large ion chains, and from ``cross-talk'' due to...
Simple Measurement for Field Reconstruction
The temporal resolution of pump-probe experiments is determined by the duration of the excitation and measurement pulses. A major constraint on femtosecond ($1$ fs = $10^{-15}$ s) and attosecond ($1$ as = $10^{-18}$ s) science is how well we can control and compress these pulses. However, such ultrashort pulses require a broad spectrum with...
Quantum computing requires the ability to prepare and manipulate arbitrary quantum states and read out results. Cold atom systems are a proven and highly versatile platform for the study of quantum computing and other aspects of quantum physics. They have been used to develop quantum memories, to study adiabatic quantum computing, and for quantum simulation.
In this work, we explore a...
The connection between quantum entanglement and classical chaos has puzzled physicists for decades. To understand chaos in the quantum context, it is necessary to explore signatures of chaos in the deep quantum regime, where the quantum-classical correspondence cannot be invoked. A common approach is to study the quantum kicked top, which is a finite-dimensional quantum system that displays...
Camera trapping is widely used in different ecological studies and is particularly important for remote locations and extreme environments. However, due to certain optical challenges of adapting this approach to small rodents, combined with the logistical and environmental issues, it was not possible to use camera traps for subnivean observation during the arctic winter before. The frost...
When a chemical bond breaks, all valence electrons in the bond will re-arrange and transfer as the nuclei are separating. The dynamical information of such electronic re-arrangement processes will be encoded in the kinetic energy of the ions if the breaking neutral molecule is ionized, allowing us to follow the entire electronic re-arrangement process by only observing the ions. Here, using...
From cytoskeleton to centriole, we investigate the photonic inner workings of the living cell. The cytoskeleton provides the structural organization of the cell, as the supporting architecture for all known forms of life. A major structural unit of this architecture is the cellular “microtubule,” a hollow tubular body composed of individual units of the protein “tubulin” organized in an array...
Strong field physics, femtosecond (1 fs = $10^{-15}$), and attosecond (1 as = $10^{-18}$) science require intense ultrashort laser pulses for excitation and measurement. Although fs pulses can be generated directly from a laser amplifier, durations necessary for ultrafast science require spectral broadening and compression. The most common spectral broadening technique exploits the nonlinear...
We show that the observed far-field behavior of sunlight on the earth’s surface, located in the near-field region, is due to the small angular width it subtends at the center of the sun. The sun is modelled as an incoherent spherical source. The cross spectral density at the surface of the source is described by a Dirac delta function. The asymptotic far zone behavior of the cross spectral...
With advances in nanofabrication, modelling the optical properties of nanoscale systems is critical.
The optical response of nanostructures can be simulated using the bulk permittivity of the constituent materials (1). The permittivity is generally assumed time-invariant and spatially dispersionless. While these approximations are enough for the simulations of most systems, in some cases...
The spin state of an electron has a 3-dimensional vector representation. In spin-orbit coupling (SOC), an electron’s external momentum becomes linked to its spin vector. This phenomenon appears in many different systems, including atomic and crystal band structure, (quantum) spin-Hall systems, and topological insulators. Previous experiments have used Raman coupling to generate and study...
Chiral enantiomers are notoriously difficult to differentiate as they have the same chemical and physical properties. Circularly polarized light has been shown to be able to distinguish between them, but the sensitivity is low, on the order of a few percent signal difference. However, in 2019 [1], an ultrafast multi-pulse scheme has been developed which can theoretically elicit responses of up...
We investigate in the present work the doubly excited states (DES) in the Helium-like O6+ and F7+ ions. The interaction of these systems with X-ray laser pulses can cause the DES to appear in their energy spectra due to the strong correlation between the electrons. The formation of the DES can be followed by a decay by electron emission (autoionization) causing the parent ion to lose its...
