Generation of arbitrary symmetric entangled states with conditional linear optical coupling

2012/11/30 by A. V. Sharypov, Anton V. Sharypov, Bing He
Computer Science · Engineering · Physics and Astronomy · #Photonic and Optical Devices #Quantum Information and Cryptography #Quantum optics and atomic interactions #physics.optics #quant-ph

paper · pdf · doi:10.1103/physreva.87.032323

published as Phys. Rev. A 87, 032323 (2013)

arxiv created 2013/03/10 · openalex publication_date 2013/03/19 · arxiv updated 2013/04/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

An approach to generating the entangled photonic states |\ensuremathΨ₁,\ensuremathΨ₂\ensuremath⟩\ifmmode±\else\textpm\fi|\ensuremathΨ₂,\ensuremathΨ₁\ensuremath⟩ from two arbitrary states |\ensuremathΨ₁\ensuremath⟩ and |\ensuremathΨ₂\ensuremath⟩ is proposed. The protocol is implemented by the conditionally induced beam-splitter coupling, which leads to the selective swapping between two photonic modes. Such coupling occurs in a quantum system prepared in the superposition of two ground states with only one of them being involved in the swapping. All the entangled states in the category, such as entangled pairs of coherent states or Fock states (NOON states), can be efficiently produced in the same way by this method.

Citations

• Scheme for generating coherent-state superpositions with realistic cross-Kerr nonlinearity
• Frequency up- and down-conversions in two-mode cavity quantum electrodynamics
• Generating Schrödinger-cat-like states by means of conditional measurements on a beam splitter
• Reconstruction of non-classical cavity field states with snapshots of their decoherence
• Quantum computing with trapped ions
• Introductory Quantum Optics