Quantum amplitude amplification by phase noise

M. Sadgrove

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

I consider a system in which an atom in a superposition of momentum eigenstates of a periodic potential is subject to periodic random phase jumps in that potential. If the j-th state in superposition is "marked" by giving the (j-1)-th state a phase flip, I show that for the correct amount of noise, a ∼6 dB amplification of the marked state probability amplitude occurs, with no significant amplification in other states.

Original languageEnglish
Article number50005
JournalEPL
Volume86
Issue number5
DOIs
Publication statusPublished - 2009 Nov 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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