Conditional generation of an arbitrary superposition of coherent states

Abstract

We present a scheme to conditionally generate an arbitrary superposition of a pair of coherent states from a squeezed vacuum by means of the modified photon subtraction where a coherent state ancilla and two on/off type detectors are used. We show that, even including realistic imperfections of the detectors, our scheme can generate a target state with a high fidelity. The amplitude of the generated states can be amplified by conditional homodyne detections.

7 pages, 5 figures

References in corpus (3)

• Universal Quantum Computation with Continuous-Variable Cluster States
• Generation of a superposition of odd photon number states for quantum information networks
• Experimental distillation of squeezing from non-Gaussian quantum states

Cited by in corpus (1)

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