PSI Fellow

Perimeter Institute for Theoretical Physics

Academic Staff
Training, Educational Outreach and Scientific Programs

Areas of research: Fondements Quantiques

(519) 569-7600 x5424

Recent Publications
  • Ansanelli, M. M., Zjawin, B., Schmid, D., YÄ«ng, Y. L., Selby, J. H., Gilligan-Lee, C. N. M., . . . Spekkens, R. W. (2026). The resource theory of causal influence and knowledge of causal influence. doi:10.48550/arxiv.2512.11209
  • YÄ«ng, Y. L., Schmid, D., & Spekkens, R. W. (2025). A contextual advantage for conclusive exclusion: repurposing the Pusey-Barrett-Rudolph construction. doi:10.48550/arxiv.2512.04173
  • Gilligan-Lee, C. N. M., YÄ«ng, Y. L., Richens, J., & Schmid, D. (2025). Quantum oracles give an advantage for identifying classical counterfactuals. doi:10.48550/arxiv.2512.13692
  • Rossi, V. P., Zjawin, B., Baldijão, R. D., Schmid, D., Selby, J. H., & Sainz, A. B. N. (2025). How typical is contextuality?. doi:10.48550/arxiv.2510.20722
  • Schmid, D., Selby, J. H., Rossi, V. P., Baldijão, R. D., & Sainz, A. B. (2025). Shadows and subsystems of generalized probabilistic theories: when tomographic incompleteness is not a loophole for contextuality proofs. Quantum, 9, 1880. doi:10.22331/q-2025-10-13-1880
  • Schmid, D., Selby, J. H., Rossi, V. P., Baldijão, R. D., & Sainz, A. B. N. (2025). Shadows and subsystems of generalized probabilistic theories: when tomographic incompleteness is not a loophole for contextuality proofs. doi:10.48550/arxiv.2409.13024
  • Wagner, R., Baldijão, R. D., Salzger, M., YÄ«ng, Y. L., Schmid, D., & Selby, J. H. (2025). A structure theorem for complex-valued quasiprobability representations of physical theories. doi:10.48550/arxiv.2509.10949
  • Centeno, D., Erba, M., Galley, T. D., Schmid, D., Selby, J. H., Spekkens, R. W., . . . Ying, Y. (2025). Symmetry-induced failures of tomographic locality: Constructing foil theories by twirling. Physical Review A, 112(3), l030202. doi:10.1103/hpmv-15sf
  • Schmid, D., Selby, J. H., & Spekkens, R. W. (2025). Addressing some common objections to generalized noncontextuality. doi:10.48550/arxiv.2302.07282
  • Walleghem, L., Wagner, R., Ying, Y., & Schmid, D. (2025). Extended Wigner's friend paradoxes do not require nonlocal correlations. Physical Review A, 112(2), 022212. doi:10.1103/n4hv-rlgj
  • Walleghem, L., Ying, Y., Wagner, R., & Schmid, D. (2025). Connecting extended Wigner's friend arguments and noncontextuality. Quantum, 9, 1819. doi:10.22331/q-2025-07-31-1819
  • Schmid, D., YÄ«ng, Y. L., & Leifer, M. (2025). Copenhagenish interpretations of quantum mechanics. doi:10.48550/arxiv.2506.00112
  • Ying, Y., Alañón, M. C., Centeno, D., Surace, J., Ansanelli, M. M., Liu, R., . . . Spekkens, R. W. (2025). On whether quantum theory needs complex numbers: the foil theories perspective. doi:10.48550/arxiv.2506.08091
  • Zhang, Y., Schmid, D., Ying, Y., & Spekkens, R. W. (2025). Reassessing the boundary between classical and nonclassical for individual quantum processes. https://arxiv.org/abs/2503.05884v2
  • Schmid, D. (2025). Noncontextual ontological models of operational probabilistic theories. doi:10.48550/arXiv.2502.11842
  • Schmid, D., Baldijão, R. D., Ying, Y., Wagner, R., & Selby, J. H. (2024). Kirkwood-Dirac representations beyond quantum states and their relation to noncontextuality. Physical Review A, 110(5), 052206. doi:10.1103/physreva.110.052206
  • Ying, Y., Ansanelli, M. M., Di Biagio, A., Wolfe, E., Schmid, D., & Cavalcanti, E. G. (2024). Relating Wigner's Friend Scenarios to Nonclassical Causal Compatibility, Monogamy Relations, and Fine Tuning. Quantum, 8, 1485. doi:10.22331/q-2024-09-26-1485
  • Schmid, D., Baldijão, R. D., Selby, J. H., Sainz, A. B., & Spekkens, R. W. (2024). Noncontextuality inequalities for prepare-transform-measure scenarios. doi:10.48550/arxiv.2407.09624
  • Schmid, D., Selby, J. H., Pusey, M. F., & Spekkens, R. W. (2024). A structure theorem for generalized-noncontextual ontological models. Quantum, 8, 1283. doi:10.22331/q-2024-03-14-1283
  • Selby, J. H., Wolfe, E., Schmid, D., Sainz, A. B., & Rossi, V. P. (2024). Linear Program for Testing Nonclassicality and an Open-Source Implementation. Physical Review Letters, 132(5), 050202. doi:10.1103/physrevlett.132.050202
  • Schmid, D., Selby, J. H., & Spekkens, R. W. (2024). Addressing some common objections to generalized noncontextuality. Physical Review A, 109(2), 022228. doi:10.1103/physreva.109.022228
  • Schmid, D. (2024). A review and reformulation of macroscopic realism: resolving its deficiencies using the framework of generalized probabilistic theories. Quantum, 8, 1217. doi:10.22331/q-2024-01-03-1217
  • Schmid, D., Fraser, T. C., Kunjwal, R., Sainz, A. B., Wolfe, E., & Spekkens, R. W. (2023). Understanding the interplay of entanglement and nonlocality: motivating and developing a new branch of entanglement theory. Quantum, 7, 1194. doi:10.22331/q-2023-12-04-1194
  • Zjawin, B., Schmid, D., Hoban, M. J., & Sainz, A. B. (2023). The resource theory of nonclassicality of channel assemblages. Quantum, 7, 1134. doi:10.22331/q-2023-10-10-1134
  • Catani, L., Leifer, M., Schmid, D., & Spekkens, R. W. (2023). Why interference phenomena do not capture the essence of quantum theory. Quantum, 7, 1119. doi:10.22331/q-2023-09-25-1119
  • Rossi, V. P., Schmid, D., Selby, J. H., & Sainz, A. B. (2023). Contextuality with vanishing coherence and maximal robustness to dephasing. Physical Review A, 108(3), 032213. doi:10.1103/physreva.108.032213
  • Schmid, D., Ying, Y., & Leifer, M. (2023). A review and analysis of six extended Wigner's friend arguments. doi:10.48550/arxiv.2308.16220
  • Catani, L., Leifer, M., Scala, G., Schmid, D., & Spekkens, R. W. (2023). Aspects of the phenomenology of interference that are genuinely nonclassical. Physical Review A, 108(2), 022207. doi:10.1103/physreva.108.022207
  • Selby, J. H., Schmid, D., Wolfe, E., Sainz, A. B., Kunjwal, R., & Spekkens, R. W. (2023). Contextuality without Incompatibility. Physical Review Letters, 130(23), 230201. doi:10.1103/physrevlett.130.230201
  • Selby, J. H., Schmid, D., Wolfe, E., Sainz, A. B., Kunjwal, R., & Spekkens, R. W. (2023). Accessible fragments of generalized probabilistic theories, cone equivalence, and applications to witnessing nonclassicality. Physical Review A, 107(6), 062203. doi:10.1103/physreva.107.062203
  • Zjawin, B., Schmid, D., Hoban, M. J., & Sainz, A. B. (2023). Quantifying EPR: the resource theory of nonclassicality of common-cause assemblages. Quantum, 7, 926. doi:10.22331/q-2023-02-16-926
Seminars
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/02/04, PIRSA:26010063
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/02/03, PIRSA:26010059
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/02/02, PIRSA:26020006
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/29, PIRSA:26010065
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/27, PIRSA:26010064
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/22, PIRSA:26010062
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/21, PIRSA:26010061
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/19, PIRSA:26010060
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/13, PIRSA:26010058
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/12, PIRSA:26010057
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/08, PIRSA:26010056
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/06, PIRSA:26010055
  • Lecture - Quantum Foundations (Elective), PHYS 639, Quantum Foundations (Elective), PHYS 639, January 5 - February 6, 2026, 2026/01/05, PIRSA:26010054
  • Lecture - Quantum Theory (Core), PHYS 605, Quantum Theory (Core), PHYS 605, September 2 - October 7, 2025, 2025/09/11, PIRSA:25090027
  • Lecture - Quantum Theory (Core), PHYS 605, Quantum Theory (Core), PHYS 605, September 2 - October 7, 2025, 2025/09/10, PIRSA:25090026
  • Lecture - Quantum Theory (Core), PHYS 605, Quantum Theory (Core), PHYS 605, September 2 - October 7, 2025, 2025/09/08, PIRSA:25090025
  • Lecture - Quantum Theory (Core), PHYS 605, Quantum Theory (Core), PHYS 605, September 2 - October 7, 2025, 2025/09/05, PIRSA:25090024
  • Lecture - Quantum Theory (Core), PHYS 605, Quantum Theory (Core), PHYS 605, September 2 - October 7, 2025, 2025/09/04, PIRSA:25090023
  • Lecture - Quantum Theory (Core), PHYS 605, Quantum Theory (Core), PHYS 605, September 2 - October 7, 2025, 2025/09/03, PIRSA:25090022