Bulletin of the American Physical Society
Spring 2021 Meeting of the APS Ohio-Region Section
Volume 66, Number 3
Friday–Saturday, April 9–10, 2021; Virtual Meeting Hosted by John Carroll University, Cleveland Heights, OH; Time Zone: Eastern Daylight Time, USA
Session B03: Contributed Talks III |
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Chair: Dinesh Shetty, John Carroll University |
Saturday, April 10, 2021 8:00AM - 8:12AM |
B03.00001: Mathematical Models for Living Forms in Medical Physics Submodel 2: Information Coding and Information Processing through Nerves Christina Pospisil This talk continues the presentation Mathematical Models for Living Forms in Medical Physics Submodel 1: The information processing from teeth to Nerves from the Biophysics Annual Meeting 2020 Conference and American Physical Society Conferences. In the Submodel 1 the information processing from teeth to the nerves is modeled. The information is passed via p-waves through the tooth layers enamel and dentin. Odontoblasts located in the liquid in the tubules of the tooth dentin layer perform finally the transformation into electrical information (an electrical signal) that passes along nerves. The Submodel 2 of the project is dedicated to the information coding of the information from an entity hitting/touching a tooth and to the information processing of the coded unit through the nerves. Emphasized are the information representation as an electrical code and the coded information flow in the living system. [Preview Abstract] |
Saturday, April 10, 2021 8:12AM - 8:24AM |
B03.00002: Driven-dissipative creation of a topologically ordered state (AKLT State) Vaibhav Sharma Dissipation in an open quantum system often destroys a quantum state of interest, but if carefully engineered, it can be used as a tool to prepare interesting quantum states. We propose an experimentally viable method to dissipatively create the AKLT (Affleck-Lieb-Kennedy-Tasaki) state which exhibits symmetry protected topological order and harbours gapped edge modes. We analyze a system of bosons trapped in a tilted optical lattice, driven by coherent Raman beams and coupled to a superfluid bath. We propose a protocol under which the AKLT state emerges as the steady state. We use exact diagonalization and DMRG methods to calculate the time scale for state preparation and find that the state preparation time scales quadratically with the system size. [Preview Abstract] |
Saturday, April 10, 2021 8:24AM - 8:36AM |
B03.00003: Non-Markovian Models for Photosynthetic Reaction Center Zibo Wang, Antonio Lim, Imran Mirza In the last decade, it has been theorized that inside the reaction center, three chlorophyll molecules act like a five-level quantum system\footnote{K. E. Dorfman, D. V. Voronine, S. Mukamel, and M. O. Scully, “Photosynthetic reaction center as a quantum heat engine”, PNAS, \textbf{110}, 2746-2751 (2013).}. Based on this five-level scheme, we have revisited a Markovian master model for the photosynthesis \footnote{Z. Wang and I. Mirza, "Dissipative Five-level Quantum Systems: A Quantum Model of Photosynthetic Reaction Centers," Frontiers in Optics / Laser Science, JM6B.26 (2020).}. However, the Born-Markov approximation and simple thermal bath treatment may not be the true depiction of reality as this five-level system couples strongly with the environment. Addressing this issue, in this talk, I'll present our recent work on the non-Markovian modeling of the photosynthetic reaction center based on a time-convolutionless non-Markovian treatment. The central aim of our study is to investigate if our more realistic non-Markovian model can predict higher photosynthetic yield compared to the already studied Markovian scenario. The results of our study will help to explain how plants and certain types of bacteria utilize incoherent light efficiently. [Preview Abstract] |
Saturday, April 10, 2021 8:36AM - 8:48AM |
B03.00004: Fast Quantum Control of Bose-Einstein Condensates for Inertial Sensing Applications Skyler A Wright, Chris Larson, Edward Carlo Samson We report on our numerical simulations of high-fidelity, fast quantum control of Bose-Einstein condensates (BECs) as we study the viability of using shortcuts-to-adiabaticity (STA) launching protocols for BEC transport and for use in applications of inertial sensing interferometry in 2D. Arbitrary and dynamic painting potentials are used to confine and control the spatial transport of the BECs. Counterdiabatic driving STA protocols are used because they provide fast quantum control while suppressing excitations from free energies. Our preliminary simulations address how STA protocols compare with more classical approaches to transport in terms of quantum coherence based on the depth of the potential trap used and the total time of transport. Using these tests as a baseline, we analyze the effects of STA protocols when used in BEC Mach-Zehnder interferometry. [Preview Abstract] |
Saturday, April 10, 2021 8:48AM - 9:00AM |
B03.00005: Population trapping in non-Markovian waveguide quantum electrodynamics architectures --- A study based on Tensor Networks Pawan Khatiwada, Logan Patrick, Umar Arshad, Imran Mirza With the realization of entanglement as an information resource in quantum information sciences, physicists have developed a fresh approach to study complex many-particle setups. The framework of Tensor Networks (TN)[1,2] in this context has shown great potential to predict the energy level configuration of the complicated many-body systems. In this presentation, we are going to take a rather simple example from quantum optics, namely, a triply excited three-qubit architecture coupled with a bidirectional waveguide to apply the machinery of the TN. To make the comparison with the standard techniques in quantum optics literature, we'll also show the master equation treatment of the same problem. A comparison between the master equation and the TN theory will be emphasized. Finally, we'll highlight the possible applications of this problem in quantum networking and quantum communication protocols. [1] "A practical introduction to tensor networks: Matrix product states and projected entangled pair states", Roman Orus, Annals of Physics 349, 117-158 (2014). [2] "Entanglement in many-body quantum systems", Pawan Khatiwada and Imran M. Mirza, Frontiers in Optics/Laser Science, B. Lee, C. Mazzali, K. Corwin, and R. Jason Jones, eds., OSA Technical Digest (Optical Society of America, 2020), paper JM6A.23. [Preview Abstract] |
Saturday, April 10, 2021 9:00AM - 9:12AM |
B03.00006: Design and Construction of a Low-Cost Mechanical Scanning System and Control Interface for Scanning Acoustic and Photoacoustic Microscopy John T. Bonhomme, Corneliu I. Rablau, Timothy A. Stiles, Ronald E. Kumon We have designed and started construction of an instrument that will be able to serve as both a scanning acoustic microscope (SAM) and photoacoustic microscope (PAM). This instrument will be capable of imaging the volume of optically opaque specimens that are approximately 2 cm x 2 cm in lateral dimensions with both acoustic and optical contrast. When operating as a SAM, the specimen will be water-coupled to a high-frequency ultrasound transducer operating in pulse-echo mode. When operating as a PAM, short light pulses (\textasciitilde 100 ns, 5 to 10 $\mu $J/pulse) from a 905 nm infrared laser diode located under the specimen will generate ultrasound pulses thermoelastically, which will then be received by a confocal high-frequency transducer. In both cases, the specimen will be raster-scanned under the transducer by a moving stage. The mechanical scanning system was designed and built using a spring-loaded microscope stage, micrometers, stepper motors, a shield board used for 3D printers, an Arduino Mega microcontroller, and a Raspberry Pi 4 microcomputer. A graphical user interface was written in Python using Tkinter to send the motion control commands to the stage. Future work will include incorporation of the laser and transducer control systems. [Preview Abstract] |
Saturday, April 10, 2021 9:12AM - 9:24AM |
B03.00007: A New Explanation for the Refraction of Light and its basis Gh. Saleh, Mostafa Shayan Light and related phenomena, are one of the most popular topics in science. One of these phenomena is the refraction of light. In order to study it, the motion of photons must be studied first. Based on Saleh Theory, the single photon has a 3-dimensional motion, including a transition and a rotary motion. By using this definition, we are going to explain the Light Refraction. This could answer the most of the unanswered question. In this article we have explained the basic reason of refraction based on Saleh Theory. When a ray of light transverses from a medium (1) to denser medium (2), the latter shows more resistance to light. The reason for this resistance is its denser structure. It causes the light to slow down. Under the effect of this slowing down, an amount of force and energy enters the medium 2 and gives an impulse to medium 2. Under the effect of which a reaction enters from medium 2 that causes the deviation of the set of light rays. When the light enters from medium to the less dense medium (3), the pressure difference is made (two different medium have two types of pressure) and under the effect of this pressure difference, a force caused by the set of photons enters medium 3. The reaction applies a force that turns the set of photons towards the initial directions. [Preview Abstract] |
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