A local non-contextual model of non-interacting measurement

Presenting Author: Sacha Greenfield, Carleton College
Contributing Author(s): Justin Dressel

Measurement of photon number in one mode of a two-mode optical cavity allows for high-fidelity detection of an object in the other mode. In the single-photon limit, measurement of the photon in one mode collapses the superposition state of the photon, indicating that the photon was never present in the object-containing mode. This seemingly non-local detection, originally formulated as the Elitzur-Vaidman bomb test, has thus been dubbed "non-interacting measurement." However, building off of previously formulated models, we develop an explicitly local realist model of a qubit that is non-contextual for pure states. The possibility of such a model indicates that neither non-locality nor contextuality is a necessary condition for "quantum-ness." Instead, non-interacting measurement's "spooky action at a distance" may be attributed to the existence of an information-carrying vacuum that provides a reference frame for the particle evolution.

(Session 5 : Sunday from 5:00pm - 7:00pm)


SQuInT Chief Organizer
Akimasa Miyake, Associate Professor

SQuInT Local Organizers
Rafael Alexander, Postdoctoral Fellow
Chris Jackson, Postdoctoral Fellow

SQuInT Administrator
Gloria Cordova
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SQuInT Assistant
Wendy Jay

SQuInT Founder
Ivan Deutsch, Regents' Professor, CQuIC Director

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