Teck Seng Koh      PhD, Physics (2012), University of Wisconsin-Madison

About Me

I am an Honorary Research Associate at the Department of Physics, University of Wisconsin-Madison. I graduated with a PhD in Physics at the same university under the supervision of Prof. Susan Coppersmith and Dr Mark Friesen. My current full-time job is with the Ministry of Education of Singapore, where I am serving out a bond.

Research Interests

My research interests include Condensed Matter Physics, Quantum Computation and Quantum Simulation.

Contact Me

Email : tkoh2 (at) wisc.edu

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Last updated: Oct 1, 2014

Publications

2010

1. “Pauli spin-blockade and lifetime-enhanced transport in a Si/SiGe double quantum dot.” C. B. Simmons, T. S. Koh, N. Shaji, M. Thalakulam, L. J. Klein, H. Qin, H. Luo, D. E. Savage, M. G. Lagally, A. J. Rimberg, R. Joynt, R. Blick, Mark Friesen, S. N. Coppersmith, M. A. Eriksson, Physical Review B 82, 245312 (2010). This article earned an “Editor’s Suggestion”.


2011


2. “Tunable spin loading and T1 of a silicon spin qubit measured by single- shot readout.” C. B. Simmons, J. R. Prance, B. J. van Bael, T. S. Koh, Z. Shi, D. E. Savage, M. G. Lagally, R. Joynt, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, Physical Review Letters 106, 156804 (2011). This article earned an “Editor’s Suggestion” and an accompanying Viewpoint at http://physics.aps.org/articles/v4/31.


3. “Unconventional transport in the hole regime of a Si double quantum dot.” T. S. Koh, C. B. Simmons, M. A. Eriksson, S. N. Coppersmith, and Mark Friesen, Physical Review Letters 106, 186801 (2011).


2012


4. “A fast hybrid silicon double quantum dot qubit.” Z. Shi, C. B. Simmons, J. R. Prance, J. K. Gamble, T. S. Koh, Y.-P. Shim, X. Hu, D. E. Savage, M. G. Lagally, M. A. Eriksson, Mark Friesen, and S. N. Coppersmith, Physical Review Letters 108, 140503 (2012).


5. “Pulse-gated quantum dot hybrid qubit.” T. S. Koh, J. K. Gamble, M. A. Eriksson, Mark Friesen, and S. N. Coppersmith, Physical Review Letters 109, 250503 (2012).


2013


6. “High fidelity gates in quantum dot spin qubits.” T. S. Koh, S. N. Coppersmith, and Mark Friesen, Proceedings of the National Academy of Sciences 110, 19695 (2013).


7. “Coherent quantum oscillations in a silicon charge qubit.” Z. Shi, C. B. Simmons, D. R. Ward, J. R. Prance, R. T. Mohr, T. S. Koh, J. K. Gamble, X. Wu, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, Physical Review B 88, 075416 (2013).


2014


8. "Fast coherent manipulation of three-electron states in a double quantum dot.” Z. Shi, C. B. Simmons, D. R. Ward, J. R. Prance, Xian Wu, T. S. Koh, J. K. Gamble, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, Nature Communications 5, 3020 (2014).


9. “Quantum control and process tomography of a semiconductor quantum dot hybrid qubit.” Dohun Kim, Z. Shi, C. B. Simmons, D. R. Ward, J. R. Prance, T. S. Koh, J. K. Gamble, D. E. Savage, M. G. Lagally, Mark Friesen, S. N. Coppersmith, and Mark A. Eriksson. Nature 511, 70 (2014).


10. “Characterizing gate operations near the sweet spot of an exchange- only qubit.” J. Fei, J.-T. Hung, T. S. Koh, Y.-P. Shim, S. N. Coppersmith, X. Hu, and Mark Friesen. To be submitted.