Quantum phase amplification

G. M. D’Ariano, C. Macchiavello, N. Sterpi, H. P. Yuen

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


A scheme for amplifying phase shifts is presented, based on ideal photon number deamplification. For high-sensitivity measurements phase amplification sizeably reduces the bit-error rate and enhances the mutual information retrieved from the measurement. Phase-coherent states preserve their coherence under amplification, and achieve the best amplifier performance.

Original languageEnglish (US)
Pages (from-to)4712-4718
Number of pages7
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number6
StatePublished - 1996

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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