Experimental and theoretical progress in interaction-free measurements

Research output: Contribution to journalArticlepeer-review


Using a hybrid of a simple interference technique and an application of the quantum Zeno effect, it is possible to optically determine the presence of an absorbing object with an arbitrarily low probability that a photon is actually absorbed. We have demonstrated the feasibility of systems in which up to 85% of the measurements could be "interaction-free". Also, we have started investigating the possibility of using these techniques to allow "interaction-free" imaging of objects; our prototype schemes have shown resolutions of less than 10 μm. Finally, we present a curious phenomenon that occurs when the object in question is only partially transmitting, which should allow a seeming violation of Beer's law.

Original languageEnglish (US)
Pages (from-to)115-121
Number of pages7
JournalPhysica Scripta T
StatePublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics


Dive into the research topics of 'Experimental and theoretical progress in interaction-free measurements'. Together they form a unique fingerprint.

Cite this