Phase Resolution and Coherent Phase States |
| |
| Authors: | Michael JW Hall |
| |
| Affiliation: | Department of Theoretical Physics, Research School of Physical Sciences and Engineering , Australian National University , GPO Box 4, Canberra, ACT 2601, Australia |
| |
| Abstract: | Abstract Various measures of phase resolution (including variance, entropy, confidence half-width, and reciprocal peak likelihood) are reviewed, and applied to the class of coherent phase states. These states arise naturally as eigenstates of the Susskind-Glogower phase operator, and are found to have near-optimal phase resolution properties for fixed mean photon number nbar]. The mutual information for a communication channel based on coherent phase states is calculated as log (nbar] + 1), within 1·5 bits of the theoretical maximum for single-mode channels. |
| |
| Keywords: | |
|
|
