Physics – Quantum Physics
Scientific paper
2008-04-03
Phys. Rev. A 77, 062315 (2008)
Physics
Quantum Physics
9 pages, 8 figures
Scientific paper
10.1103/PhysRevA.77.062315
Theoretical analysis is given for a two-photon subtraction from a continuous wave (CW) squeezed vacuum with finite time separation between two detection events. In the CW photon subtraction process, the generated states are inevitably described by temporal mutimode states. Our approach is based on Schr\"{o}dinger picture which provides mathematically simple forms and an intuitive understanding of its multimode structure. We show that, in our process, the photon subtracted squeezed vacuum is generated in two temporal modes and one of these modes acts as an ancillary mode to make the other one a large amplitude coherent state superposition.
Sasaki Masahide
Takahashi Hiroki
Takeoka Masahiro
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