TY - JOUR

T1 - Large-amplitude coherent-state superposition generated by a time-separated two-photon subtraction from a continuous-wave squeezed vacuum

AU - Takeoka, Masahiro

AU - Takahashi, Hiroki

AU - Sasaki, Masahide

PY - 2008/6/12

Y1 - 2008/6/12

N2 - A theoretical analysis is given for a two-photon subtraction from a continuous-wave squeezed vacuum with finite time separation between two detection events. In the cw photon subtraction process, generated states are inevitably described by temporal multimode states. Our approach is based on analytical formulas that are mathematically simple and provide an intuitive understanding of the multimode structure of the system. 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.

AB - A theoretical analysis is given for a two-photon subtraction from a continuous-wave squeezed vacuum with finite time separation between two detection events. In the cw photon subtraction process, generated states are inevitably described by temporal multimode states. Our approach is based on analytical formulas that are mathematically simple and provide an intuitive understanding of the multimode structure of the system. 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.

UR - http://www.scopus.com/inward/record.url?scp=45249092732&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45249092732&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.77.062315

DO - 10.1103/PhysRevA.77.062315

M3 - Article

AN - SCOPUS:45249092732

SN - 1050-2947

VL - 77

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

IS - 6

M1 - 062315

ER -