Proposal for a quantum delayed-choice experiment

Radu Ionicioiu*, Daniel R. Terno

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    135 Citations (Scopus)


    Gedanken experiments help to reconcile our classical intuition with quantum mechanics and nowadays are routinely performed in the laboratory. An important open question is the quantum behavior of the controlling devices in such experiments. We propose a framework to analyze quantum-controlled experiments and illustrate it by discussing a quantum version of Wheeler's delayed-choice experiment. Using a quantum control has several consequences. First, it enables us to measure complementary phenomena with a single experimental setup, pointing to a redefinition of complementarity principle. Second, it allows us to prove there are no consistent hidden-variable theories having "particle" and "wave" as realistic properties. Finally, it shows that a photon can have a morphing behavior between particle and wave. The framework can be extended to other experiments (e.g., Bell inequality).

    Original languageEnglish
    Article number230406
    Pages (from-to)1-5
    Number of pages5
    JournalPhysical Review Letters
    Issue number23
    Publication statusPublished - 2 Dec 2011


    Dive into the research topics of 'Proposal for a quantum delayed-choice experiment'. Together they form a unique fingerprint.

    Cite this