Yingkai Ouyang
Status: Alumnus (data might not be up-to-date)

Former Research Fellow (SUTD)


  • Y. Ouyang, Gavin K. Brennen. Quantum error correction on symmetric quantum sensors.
  • M. Hayashi, Y. Ouyang. Tight Cramér-Rao type bounds for multiparameter quantum metrology through conic programming.
  • Y. Ouyang, Ching-Yi Lai. Linear programming bounds for quantum channels acting on quantum error-correcting codes.
  • Y. Ouyang, Cosmo Lupo. Quantum key distribution with non-ideal heterodyne detection.
  • Y. Ouyang, Ramis Movassagh. Constructing quantum codes from any classical code and their embedding in ground space of local Hamiltonians.
  • Y. Ouyang, Narayanan Rengaswamy. Weight Distribution of Classical Codes Influences Robust Quantum Metrology.


  • Y. Ouyang, M. Tomamichel, Min-Hsiu Hsieh, Barry C. Sanders, Jacquiline Romero, Kaumudibikash Goswami. (2023). Approximate reconstructability of quantum states and noisy quantum secret sharing schemes. Phys. Rev. A 108
  • Y.L.Hu, Y. Ouyang, M. Tomamichel. (2023). Privacy and correctness trade-offs for information-theoretically secure quantum homomorphic encryption. Quantum 7 976
  • Y. Ouyang, M. Tomamichel. (2022). Learning quantum graph states with product measurements. IEEE International Symposium on Information Theory 2963-2968
  • Y. Ouyang, Damian Markham, Nathan Shettell. (2021). Robust quantum metrology with explicit symmetric states. IEEE Trans. Inf.
  • Y. Ouyang, Earl Campbell. (2021). Trade-offs on number and phase shift resilience in bosonic quantum codes. IEEE Trans. Inf. 67 6644-6652
  • Y. Ouyang. (2021). Avoiding coherent errors with rotated concatenated stabilizer codes. NPJ: Quantum Information 7 87
  • Jasminder S. Sidhu, Y. Ouyang, Earl T. Campbell, Pieter Kok. (2021). Tight bounds on the simultaneous estimation of incompatible parameters. Phys. Rev. X 11 011028
  • Hakop Pashayan, Bartosz Regula, James R. Seddon, Y. Ouyang, Earl T. Campbell. (2021). Quantifying quantum speedups: improved classical simulation from tighter magic monotones. PRX Quantum 2 010345
  • Y. Ouyang. (2021). Quantum storage in quantum ferromagnets. Phys. Rev. B 103 144417
  • Y. Ouyang, Rui Chao. (2020). Permutation-invariant constant-excitation quantum codes for amplitude damping. IEEE Trans. Inf. 66 2921-2933
  • Y. Ouyang, Lin Chen, Yi Shen. (2020). Faster quantum computation with permutations and resonant couplings. Linear Algebra Appl 592 270-286
  • Y. Ouyang, Earl T. Campbell, David R. White. (2020). Compilation by stochastic Hamiltonian sparsification. Quantum 4 235
  • Peter P. Rohde, Joseph Fitzsimons, Si-Hui Tan, Y. Ouyang. (2020). Homomorphic encryption of linear optics quantum computation on almost arbitrary states of light with asymptotically perfect security. Physical Review Research 2 013332
  • Y. Ouyang, Ching-Yi Lai. (2020). Linear programming bounds for quantum amplitude damping codes. 1875-1879
  • Yimin Wang, Y. Ouyang, Xun-Li Feng, Gangcheng Wang, Chunfeng Wu, Chu Guo. (2019). Initializing a permutation-invariant quantum error-correction code. Phys. Rev. A 99 012335
  • Y. Ouyang. (2019). Computing spectral bounds of the Heisenberg ferromagnet from geometric considerations. J. Math. Phys. 60 071901
  • Robert Pisarczyk, V. Vedral, Y. Ouyang, Joseph F. Fitzsimons, Zhikuan Zhao. (2019). Causal limit on quantum communication. Phys. Rev. Lett. 123 150502
  • Y. Ouyang, Peter P. Rohde, Si-Hui Tan. (2018). Practical quantum somewhat-homomorphic encryption with coherent states. Phys. Rev. A 97 042308
  • Y. Ouyang, Joseph F. Fitzsimons, Tommaso F. Demarie. (2018). Classical verification of quantum circuits containing few basis changes. Phys. Rev. A 97 042319
  • Y. Ouyang, Joseph Fitzsimons, Si-Hui Tan. (2018). Quantum homomorphic encryption from quantum codes. Phys. Rev. A 98 042334
  • Y. Ouyang. (2017). Permutation-invariant qudit codes from polynomials. Linear Algebra Appl 532 43-59
  • Y. Ouyang, S. Tan, Liming Zhao, J. Fitzsimons. (2017). Computing on quantum shared secrets. Phys. Rev. A 96 052333
  • Y. Ouyang, Joseph Fitzsimons. (2016). Permutation-invariant codes encoding more than one qubit. Phys. Rev. A 93 042340
  • S. Tan, Joshua A. Kettlewell, Y. Ouyang, Lin Chen, J. Fitzsimons. (2016). A quantum approach to homomorphic encryption. Scientific Reports 6 33467
  • Y. Ouyang. (2014). Concatenated quantum codes can attain the quantum Gilbert-Varshamov bound. IEEE Trans. Inf. 60 3117-3122
  • Y. Ouyang. (2014). Channel covariance, twirling, contraction, and some upper bounds on the quantum capacity. Quantum Information and Computation 14 0917-0936
  • Y. Ouyang. (2014). Permutation-invariant quantum codes. Phys. Rev. A 90 062317
  • Y. Ouyang, Wee Hao Ng. (2013). Truncated channel representations for coupled harmonic oscillators. J. Phys. A: Math. Theor. 46 205301
  • Y. Ouyang. Permutation-invariant quantum coding for quantum deletion channels. - None -
  • Y. Ouyang, Taro Shibayama. The equivalence between correctability of deletions and insertions of separable states in quantum codes. ITW