We exploit geometric properties of quantum states of light in optical cavities to carry out quantum nondemolition measurements. We generalize the "mode-invisibility" method to obtain information about the Wigner function of a squeezed coherent state in a nondestructive way. We also simplify the application of this nondemolition technique to measure single-photon and few-photon states.
Physical Review A
- Pub Date:
- September 2014
- Effects of atomic coherence on propagation absorption and amplification of light;
- electromagnetically induced transparency and absorption;
- Quantum Physics
- 14 pages, 10 figures. Revtex 4.1, V2: Updated to published version