Dax Enshan Koh
Profile
Education
- Doctor of Philosophy (Ph.D.)Massachusetts Institute of Technology , United States
- Master of Science (M.Sc.)University of Waterloo , Canada
- Bachelor of Science (B.S.)Stanford University , United States
Achievements
- APS Outstanding Referee, American Physical Society
- IOP Outstanding Reviewer Award 2025, Quantum Science and Technology, IOP Publishing
- IOP Trusted Reviewer Status, IOP Publishing
- Central Research Fund Award, A*STAR Science and Engineering Research Council
- Chairman’s Honours List, A*STAR
- National Science Scholarship (BS-PhD), A*STAR
Professional Memberships
- Editor, Quantum– Present
- Member, Community of Scholar Advisors, A*STAR Graduate Academy–
- Program Committee Member, 26th Asian Quantum Information Science Conference (AQIS 2026)
- Technical Program Committee Member, ACM NanoCom 2025
- Technical Program Committee Member, ACM NanoCom 2024
- Programme Committee Member, A*STAR Mini-Symposium on Quantum Science and Technology
Corporate Experience
- Senior Scientist II, A*STAR Institute of High Performance Computing–
- Senior Scientist II, A*STAR Quantum Innovation Centre–
- Adjunct Assistant Professor, Singapore University of Technology and Design–
- Senior Scientist I, A*STAR Quantum Innovation Centre–
- Senior Scientist I, A*STAR Institute of High Performance Computing–
- Scientist II, A*STAR Institute of High Performance Computing–
- Scientist I, A*STAR Institute of High Performance Computing–
- Z Fellowship Postdoctoral Researcher, Zapata Computing (Now Zapata Quantum)–
Research
Research Interests
- Quantum computation
Publication
Journal Papers
Kaifeng Bu, Weichen Gu, Dax Enshan Koh, and Xiang Li, “Decoded Quantum Interferometry Under Noise.” Quantum Science and Technology 11, 025010 (2026).
Jin Ming Koh, Dax Enshan Koh, and Jayne Thompson, “Readout Error Mitigation for Mid-Circuit Measurements and Feedforward.” PRX Quantum 7, 010317 (2026).
Lu Li, Kaifeng Bu, Dax Enshan Koh, Arthur Jaffe, and Seth Lloyd, “Wasserstein Complexity of Quantum Circuits.” Journal of Physics A: Mathematical and Theoretical 58, 265302 (2025).
Yuqi Li, Junjing Xing, Dengke Qu, Lei Xiao, Zhaobing Fan, Zhu-Jun Zheng, Haitao Ma, Peng Xue, Kishor Bharti, Dax Enshan Koh, and Yunlong Xiao, “Communication with Quantum Catalysts.” Quantum Science and Technology 10, 035044 (2025).
Winston Fu, Dax Enshan Koh, Siong Thye Goh, and Jian Feng Kong, “Classical shadows with improved median-of-means estimation.” Quantum Science and Technology 10, 035043 (2025).
Tobias Haug, Kishor Bharti, and Dax Enshan Koh, “Pseudorandom unitaries are neither real nor sparse nor noise-robust.” Quantum 9, 1759 (2025).
Nikhil Bansal, Wai-Keong Mok, Kishor Bharti, Dax Enshan Koh, and Tobias Haug, “Pseudorandom density matrices.” PRX Quantum 6, 020322 (2025).
Rahul Arvind, Kishor Bharti, Jun Yong Khoo, Dax Enshan Koh, and Jian Feng Kong, “Quantum tug of war between randomness and symmetries on homogeneous spaces.” Physical Review Research 7, 013105 (2025).
Dax Enshan Koh, Kaavya Kumar, and Siong Thye Goh, “Quantum volunteer’s dilemma.” Physical Review Research 7, 013104 (2025).
Junjing Xing, Yuqi Li, Dengke Qu, Lei Xiao, Zhaobing Fan, Haitao Ma, Peng Xue, Kishor Bharti, Dax Enshan Koh, and Yunlong Xiao, “Teleportation with Embezzling Catalysts.” Communications Physics 7, 357 (2024).
Fong Yew Leong, Dax Enshan Koh, Jian Feng Kong, Siong Thye Goh, Jun Yong Khoo, Wei-Bin Ewe, Hongying Li, Jayne Thompson, and Dario Poletti, “Solving fractional differential equations on a quantum computer: A variational approach.” AVS Quantum Science 6, 033802 (2024).
Kaifeng Bu, Roy J. Garcia, Arthur Jaffe, Dax Enshan Koh, and Lu Li, “Complexity of Quantum Circuits via Sensitivity, Magic, and Coherence.” Communications in Mathematical Physics 405, 161 (2024).
Bujiao Wu and Dax Enshan Koh, “Error-mitigated fermionic classical shadows on noisy quantum devices.” npj Quantum Information 10, 39 (2024).
V. Vijendran, Aritra Das, Dax Enshan Koh, Syed M. Assad, and Ping Koy Lam, “An expressive ansatz for low-depth quantum approximate optimisation.” Quantum Science and Technology 9, 025010 (2024).
Kaifeng Bu, Dax Enshan Koh, Roy J. Garcia, and Arthur Jaffe, “Classical shadows with Pauli-invariant unitary ensembles.” npj Quantum Information 10, 6 (2024).
Fong Yew Leong, Dax Enshan Koh, Wei-Bin Ewe, and Jian Feng Kong, “Variational quantum simulation of partial differential equations: applications in colloidal transport.” International Journal of Numerical Methods for Heat & Fluid Flow 33, 3669 (2023).
Kaifeng Bu, Dax Enshan Koh, Lu Li, Qingxian Luo, and Yaobo Zhang, “Effects of quantum resources and noise on the statistical complexity of quantum circuits.” Quantum Science and Technology 8, 025013 (2023).
Amara Katabarwa, Sukin Sim, Dax Enshan Koh, and Pierre-Luc Dallaire-Demers, “Connecting geometry and performance of two-qubit parameterized quantum circuits.” Quantum 6, 782 (2022).
Dax Enshan Koh and Sabee Grewal, “Classical Shadows with Noise.” Quantum 6, 776 (2022).
Fong Yew Leong, Wei-Bin Ewe, and Dax Enshan Koh, “Variational quantum evolution equation solver.” Scientific Reports 12, 10817 (2022).
Kaifeng Bu, Dax Enshan Koh, Lu Li, Qingxian Luo, and Yaobo Zhang, “Statistical complexity of quantum circuits.” Physical Review A 105, 062431 (2022).
Dax Enshan Koh, Guoming Wang, Peter D. Johnson, and Yudong Cao, “Foundations for Bayesian inference with engineered likelihood functions for robust amplitude estimation.” Journal of Mathematical Physics 63, 052202 (2022).
Wei-Bin Ewe, Dax Enshan Koh, Siong Thye Goh, Hong-Son Chu, and Ching Eng Png, “Variational Quantum-Based Simulation of Waveguide Modes.” IEEE Transactions on Microwave Theory and Techniques 70 (5), 2517–2525 (2022).
Kaifeng Bu and Dax Enshan Koh, “Classical Simulation of Quantum Circuits by Half Gauss Sums.” Communications in Mathematical Physics 390, 471–500 (2022).
Guoming Wang, Dax Enshan Koh, Peter D. Johnson, and Yudong Cao, “Minimizing Estimation Runtime on Noisy Quantum Computers.” PRX Quantum 2, 010346 (2021).
Alexander M. Dalzell, Aram W. Harrow, Dax Enshan Koh, and Rolando L. La Placa, “How many qubits are needed for quantum computational supremacy?” Quantum 4, 264 (2020).
Jacob D. Biamonte, Mauro E. S. Morales, and Dax Enshan Koh, “Entanglement scaling in quantum advantage benchmarks.” Physical Review A 101, 012349 (2020).
Kaifeng Bu and Dax Enshan Koh, “Efficient Classical Simulation of Clifford Circuits with Nonstabilizer Input States.” Physical Review Letters 123, 170502 (2019).
Dax Enshan Koh, Murphy Yuezhen Niu, and Theodore J. Yoder, “Quantum simulation from the bottom up: the case of rebits.” Journal of Physics A: Mathematical and Theoretical 51, 195302 (2018).
Dax Enshan Koh, Mark D. Penney, and Robert W. Spekkens, “Computing quopit Clifford circuit amplitudes by the sum-over-paths technique.” Quantum Information & Computation 17 (13&14), 1081–1095 (2017).
Mark D. Penney, Dax Enshan Koh, and Robert W. Spekkens, “Quantum circuit dynamics via path integrals: Is there a classical action for discrete-time paths?” New Journal of Physics 19, 073006 (2017).
Dax Enshan Koh, “Further extensions of Clifford circuits and their classical simulation complexities.” Quantum Information & Computation 17 (3&4), 0262–0282 (2017).
Zi-Wen Liu, Christopher Perry, Yechao Zhu, Dax Enshan Koh, and Scott Aaronson, “Doubly infinite separation of quantum information and communication.” Physical Review A 93, 012347 (2016).
Dax Enshan Koh, Michael J. W. Hall, Setiawan, James E. Pope, Chiara Marletto, Alastair Kay, Valerio Scarani, and Artur Ekert, “Effects of Reduced Measurement Independence on Bell-Based Randomness Expansion.” Physical Review Letters 109, 160404 (2012).
M. J. Ma, M. B. A. Jalil, S. G. Tan, and D. E. Koh, “Spin-flip assisted tunneling through quantum dot based magnetic tunnel junctions.” The European Physical Journal B 82, 37–46 (2011).
Jie Guo, Seng Ghee Tan, Mansoor Bin Abdul Jalil, Dax Enshan Koh, Guchang Han, and Hao Meng, “Self-consistent treatment of spin and magnetization dynamic effect in spin transfer switching.” Journal of Magnetism and Magnetic Materials 323, 83–87 (2011).
Seng Ghee Tan, Mansoor Bin Abdul Jalil, Dax Enshan Koh, and Hwee Kuan Lee, “Pseudospin-orbital coupling for pseudospintronic device in graphene.” Journal of Magnetism and Magnetic Materials 322, 2390–2394 (2010).
Conferences
Adam Bouland, Joseph F. Fitzsimons, and Dax Enshan Koh, “Complexity Classification of Conjugated Clifford Circuits.” In 33rd Computational Complexity Conference (CCC 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 102, pp. 21:1-21:25, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018).
Dax Enshan Koh, Michael J. W. Hall, Setiawan, James E. Pope, Artur Ekert, Alastair Kay, and Valerio Scarani, “The Effects of Free Will on Randomness Expansion.” In: Iwama K., Kawano Y., Murao M. (eds) Theory of Quantum Computation, Communication, and Cryptography. TQC 2012. Lecture Notes in Computer Science, vol 7582. Springer, Berlin, Heidelberg.