Driving non-Gaussian to Gaussian states with linear optics

2002/11/30 by Dan E. Browne, D. E. Browne, Jens Eisert +5 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1103/physreva.67.062320

published as Phys. Rev. A 67, 062320 (2003) · Some typographical errors corrected and discussions extended, title changed

arxiv created 2003/02/07 · openalex publication_date 2003/06/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We introduce a protocol that maps finite-dimensional pure input states onto approximately Gaussian states in an iterative procedure. This protocol can be used to distill highly entangled bipartite Gaussian states from a supply of weakly entangled pure Gaussian states. The entire procedure requires only the use of passive optical elements and photon detectors, which solely distinguish between the presence and absence of photons.

Citations

• Universal continuous-variable quantum computation: Requirement of optical nonlinearity for photon counting

Cited by

• Experimental purification of coherent states
• Pulsed squeezed light: Simultaneous squeezing of multiple modes
• Quantifying the non-Gaussian character of a quantum state by quantum relative entropy