uantum-Atom Optics Laboratory


Optical Molasses

In the past, a mechanical analogue computer as large as the size of a small classroom was used to carry out complex scientific calculations.   The speed of its single mathematical operation is no more than a few times a second.  Today, all the operations are outperformed by a small handheld device in terms of both speed and power consumption.  The key to the handheld’s efficiency lies in the miniaturization of a unit accounted for the mathematical operations, a logic gate.   In modern devices, the size of the logic gates is on the order of tens of nanometer.  Likely, the size of a logic gate will commonly be a single ion or a single neutral atom in the near future.   At this level, not only the gate gain efficiency from miniaturization, fundamentally quantum mechanics can boost a significant leap in computing efficiency for a specific type of problems compared to its classical counterpart.    For our experiment, we focus on constructing a quantum logic gate via quantum superposition of electronic and vibrational states of neutral atoms in a one dimensional periodic optical potential formed by a standing wave of laser light.

Magneto-Optical Trap

Single Atoms Trapping (animation)

Project Title  Student Name Date of Degree
Light Assisted Collisions of Cold Atoms in an Optical Dipole Trap Nithiwadee  Thaicharoen M.S. 2012
Study of Hyperfine Structures of Rubidium by Doppler-free Saturated Absorption Spectroscopy Athip Chayakul M.S. 2012
Analytical and Numerical Studies of Single Atom Trap Rattakorn Kaewuam B.S. 2012
Computer Simulation for Magneto Optical Trap  Poompong Chaiwongkhot B.S. 2012 
A Study of Hyperfine Absorption Spectra of Rubidium Using Laser Diode Tanapoom Poomaradee B.S. 2012 
Coincidence Imaging Using a Classical Light Source Nithiwadee  Thaicharoen B.S. 2009


  • Current Research Projects

    1. Establishment of Ultra-cold Atom System (aim to BEC)

    2. Quantum Simulation of Interstellar Gases Using Cold Rydberg Atoms

    3. Experimental Realization of Simplified 1D Hubbard Model Using Optical Lattices

    4. High Precision Loading of Optical Dipole Trap

    5. Cold Rubidium Atoms in an Optical Dipole Trap

    6. Cold Collisions of Rubidium-85

    7. Single Atom Trap

    8. Versatile Two Beam Single Atom Trap

    9. Single-Atom Atomic Chip

    10. Standalone (Self-Contained) Doppler-Free Saturated Absorption Spectroscopy (lab frequency standard)

    11. Instant (Quick Operation) Magneto-Optical Trap (for chemists)

    12. Tapered Laser (optical lattices)

    13. Fully-Automated External Cavity Diode Lasers (with WIFI !!)

    14. Rydberg State Cold Collisions

    15. Electromagnetic Induced Transparency (EIT) via Path Integrals

    16. Novel Imaging Using EIT

    17. EIT of Rydberg Atoms

    18. Matter-Wave Interferometry (at Burapa University)

    19. Atomic Clock/Frequency Comb (at NIMT)

    20. Active-Controlled Vibration-Free Optical Table (at Electrical Engineering-Chiang Mai University and Burapa University)