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 language||English (US)|
|Number of pages||7|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - 1996|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics