Removal of a single photon by adaptive absorption

John Calsamiglia, Stephen M. Barnett, Norbert Lütkenhaus, Kalle-Antti Suominen

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We present a method to remove, using only linear optics, exactly one photon from a field mode. This is achieved by putting the system in contact with an absorbing environment, which is under continuous monitoring. A feedback mechanism then decouples the system from the environment as soon as the first photon is absorbed. We propose a possible scheme to implement this process and provide the theoretical tools to describe it.
Original languageEnglish
Pages (from-to)043814-1
Number of pages43813
JournalPhysical Review A
Issue number4
Publication statusPublished - 19 Sep 2001


  • linear optics
  • photon removal
  • adaptive absorption
  • optics
  • optical physics

Cite this

Calsamiglia, J., Barnett, S. M., Lütkenhaus, N., & Suominen, K-A. (2001). Removal of a single photon by adaptive absorption. Physical Review A, 64(4), 043814-1.