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

Abstract

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 Schrödinger 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.

9 pages, 8 figures

References in corpus (2)

• Conditional generation of an arbitrary superposition of coherent states
• Photon number states generated from a continuous-wave light source

Cited by in corpus (4)

• Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction
• Generating "squeezed" superpositions of coherent states using photon addition and subtraction
• Testing Bell inequalities with photon-subtracted Gaussian states
• Temporally multiplexed superposition states of continuous variables