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Siam Physics Congress 2016

8–10 Jun 2016
Asia/Bangkok timezone

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Session

Session XXVII

W3
9 Jun 2016, 13:30

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  1. 491. Reconfigurable two-qubit gates for single photon polarization state
    Pruet Kalasuwan
    09/06/2016, 13:30
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    Invited Speaker

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  2. 73. Simulation of Double Quantum Dots Charge Qubit Manipulation with Electric Field Pulses
    Mr Aniwat Kesorn (NECTEC-MU Collaborative Research Unit on Quantum Information, Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand)
    09/06/2016, 14:00
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    This study investigated the manipulation of a charge qubit by simulation for purpose of quantum computing. The charge qubit was constructed by modeling with InAs/GaAs double quantum dots (DQDs) based on sp3s* empirical tight-binding calculation. The manipulation concerned the evolution of the charge qubit, such as the state dynamics under the electric field pulses, and the leakage of...

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  3. 74. Initiation of a partially pinned scroll wave in excitable chemical media
    Mr Porramain Porjai (Faculty of Science and Technology, Valaya Alongkorn Rajabhat University under the Royal Patronage, 1 Moo 20 Phaholyothin Road, Khlong Nuang, Klong Luang, Phathum Thani 13180, Thailand)
    09/06/2016, 14:15
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    Scroll waves are three-dimensional excitation waves, generally observed in many excitable media. The occurrence of electrical scroll waves in hearts causes some cardiac arrhythmia. Freely rotating scroll waves often drift and annihilate when they hit the boundary. In contrast, scroll waves pinned to unexcitable obstacles (e.g., blood vessel or scars) are discovered to appear last longer. The...

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  4. 94. Quantum Molecular Dynamics Simulation of an Atom Encapsulation by Fullerene
    Somphoach Saichaemchan (Naresuan University)
    09/06/2016, 14:30
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    We have implemented a computer code to perform quantum molecular dynamics (QMD) simulation. The motion of nuclei are treated with Newton’s 2nd law of motion; whereas the electrons are treated quantum mechanically using Hartree-Fock approximation. The code has been applied to study how an atom is encapsulated by fullerene (C60). A helium atom is placed 3 Angstrom away from the C60 cage. An...

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  5. 137. Quantum Molecular Dynamics Simulation of Lithium Ion in Water Cluster
    Phadungkiat Kwangkaew (Naresuan University)
    09/06/2016, 14:45
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    We have implemented a computer code to perform quantum molecular dynamics (QMD) simulation. The motion of nuclei are treated with Newton’s 2nd law of motion; whereas the electrons are treated quantum mechanically using Hartree-Fock approximation. The code has been applied to study a small cluster of water molecules, consisting of 28 H2O. The simulated radial distribution function is then...

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  6. 206. Two-Photon Interference in An Optical Gating Michelson Interferometer
    Mr Ekkarat Pongophas (Collaborative Research Unit on Quantum Information)
    09/06/2016, 15:00
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    We investigate the interference of two photons in an optical gating Michelson interferometer both theoretically and experimentally. Theoretically, the phenomenon is studied using two different representations of photons, the space-time domain and a step-by-step two-photon state evolution. Both representations lead to identical results. The evolution analysis describes the result by the...

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  7. 221. Time Evolution of Gaussian Wave Packets under Dirac Equation with Fluctuating Mass and Potential
    Mr Atis Yosprakob (MU-NECTEC Collaborative Research Unit on Quantum Information, Department of Physics, Faculty of Science, Mahidol University, Phayathai, Bangkok 10400)
    09/06/2016, 15:15
    Atomic Physics, Quantum Physics, Molecular and Chemical Physics
    Oral presentaion

    Localization of relativistic particles has been of great research interest

    over many decades. We investigate the time evolution of a Gaussian wave

    packet governed by the one dimensional Dirac equation. The research

    methodology consists of analytical approach and numerical simulations

    employing the Chebyshev polynomial expansion of the propagation

    operator. For the free...

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