Experimental Demonstration of Continuous Variable Purification of Squeezed States

2006/10/13 by A. Franzen, B. Hage, Boris Hage +6 · 5 citations
Computer Science · Mathematics · Physics and Astronomy · #Beam splitter #Computer science #Continuous variable #Homodyne detection #Laser #Mathematics #Optics #Phase (matter) #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum decoherence #Quantum mechanics #Quantum optics #Quantum optics and atomic interactions #Splitter #Telecommunications #Transmission (telecommunications) #quant-ph

paper · pdf · doi:10.1103/physrevlett.97.150505

published as Phys. Rev. Lett 97, 150505 (2006)

openalex publication_date 2006/10/13 · arxiv created 2007/07/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report on the first experimental demonstration of purification of nonclassical continuous variable states. The protocol uses two copies of phase-diffused states overlapped on a beam splitter and provides Gaussified, less mixed states with the degree of squeezing improved. The protocol uses only linear optical devices such as beam splitters and homodyne detection, thereby proving these optical elements can be used for successful purification of this type of state decoherence which occurs in optical transmission channels.

Citations

• Driving non-Gaussian to Gaussian states with linear optics
• Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels
• Unconditional Quantum Teleportation

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