Amplification of realistic Schrödinger-cat-state-like states by homodyne heralding

Amine Laghaout, Jonas S. Neergaard-Nielsen, Ioannes Rigas, Christian Kragh, Anders Tipsmark, Ulrik L. Andersen

Research output: Contribution to journalJournal articleResearchpeer-review

435 Downloads (Pure)

Abstract

We present a scheme for the amplification of Schrödinger cat states that collapses two smaller states onto their constructive interference via a homodyne projection. We analyze the performance of the amplification in terms of fidelity and success rate when the input consists of either exact coherent state superpositions or of photon-subtracted squeezed vacua. The impact of imprecise homodyne detection and of impure squeezing is quantified. We also assess the scalability of iterated amplifications.
Original languageEnglish
JournalPhysical Review A
Volume87
Issue number4
Pages (from-to)043826
ISSN2469-9926
DOIs
Publication statusPublished - 2013

Bibliographical note

©2013 American Physical Society

Cite this