Experimental verification of theoretical ideas

    Tabish Qureshi

Some of our theoretical ideas attracted the attention of researchers, and have been experimentally verified by various groups. We list below some of these.

1. Characterization of two-particle interference by complementarity
   Neha Pathania, Tabish Qureshi, Phys. Rev. A 106, 012213 (2022)
   The duality relation introduced by us was experimentally verified in
   "Delayed-choice quantum erasure with nonlocal temporal double-slit interference"
   Ling Hong, Yuanyuan Chen, Lixiang Chen, New J. Phys. 25 (2023) 053014.
2. Coherence, path predictability, and I concurrence: A triality
   A. K. Roy, Neha Pathania, N. K. Chandra, P. K. Panigrahi, Tabish Qureshi, Phys. Rev. A 105, 032209 (2022)
   The triality relation introduced by us was experimentally verified in
   "Universal conservation laws of the wave-particle-entanglement triad: theory and experiment"
   Ding, Z., Deng, Y., Fei, SM. et al., Light Sci Appl 14, 82 (2025).
3. The Delayed-Choice Quantum Eraser Leaves No Choice
   Tabish Qureshi, Int. J. Theor. Phys. 60, 3076 (2021)
   The experimental setup proposed by us was used to study the delayed-choice quantum eraser, our predictions were confirmed in the process, in
   "Observations of the delayed‐choice quantum eraser using coherent photons"
   Sangbae Kim, Byoung S. Ham, Sci. Rep. 13, 9758 (2023).
4. Predictability, distinguishability, and entanglement
   Tabish Qureshi, Opt. Lett. (Letter) 46, 492 (2021) (Editor's Pick)
   A wave-particle triality relation proposed by us was experimnetally verified in
   "Quantitative complementarity of wave-particle duality"
   Tai Hyun Yoon, Minhaeng Cho, Sci. Adv. 2021; 7 : eabi9268
5. Interference visibility and wave-particle duality in multipath interference
   Tabish Qureshi, Phys. Rev. A 100, 042105 (2019)
   Our proposal for a new way of measuring quantum coherence in multi-slit interference was experimentally implemented in
   "Quantum coherence of spatial photonic qudits: experimental measurement and path-marker analysis"
   P Machado, S Pádua, J. Opt. 22 (2020) 065201
6. Wave-particle duality in asymmetric beam interference
   Keerthy K. Menon, Tabish Qureshi, Phys. Rev. A 98, 022130 (2018)
   The new wave-particle duality relation proposed by us was experimentally tested by Franco Nori's group and compared with Englert's well known duality relation. The investigation concluded that our duality relation is tighter:
   "Experimental investigation of wave-particle duality relations in asymmetric beam interference"
   D-X Chen, Y Zhang, J-L Zhao, Q-C Wu, Y-L Fang, C-P Yang, Franco Nori, npj Quantum Information 8, 101 (2022).
7. Biphoton Interference in a Double-Slit Experiment
   Ananya Paul, Tabish Qureshi, Quanta 7, 1-6 (2018)
   We had predicted that two entangled photons, passing through two different double-slits, will show interference corresponding to half the wavelength of the photons. This was experimentally confirmed, independently without referring to our work:
   "Quantum double‐double‐slit experiment with momentum entangled photons"
   Manpreet Kaur, Mandip Singh, Scientific Reports 10, 11427 (2020).
8. Measuring Quantum Coherence in Multi-Slit Interference
   Tania Paul, Tabish Qureshi, Phys. Rev. A 95, 042110 (2017)
   Our proposal for a novel way of measuring quantum coherence in multi-slit interference was experimentally implemented in
   "A generalized multipath delayed-choice experiment on a large-scale quantum nanophotonic chip"
   Chen, X., Deng, Y., Liu, S. et al., Nature Communications 12, 2712 (2021).
9. Duality of Quantum Coherence and Path Distinguishability
   M. N. Bera, Tabish Qureshi, Mohd Asad Siddiqui, A. K. Pati, Phys. Rev. A 92, 012118 (2015).
   The wave-paticle dulaity relation for multislit interference, introduced by us, was experimentall verified in
   "A generalized multipath delayed-choice experiment on a large-scale quantum nanophotonic chip"
   Chen, X., Deng, Y., Liu, S. et al., Nature Communications 12, 2712 (2021).

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