Embedded Bell-state analysis

1998/10/01 by Paul G. Kwiat, Harald Weinfurter · 1 voice · 11 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Computing Algorithms and Architecture

paper · doi:10.1103/physreva.58.r2623

openalex publication_date 1998/10/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We discuss a method for distinguishing the four orthogonal Bell states of two entangled particles. Because the scheme relies only on linear optical elements, it should be realizable with current technology. The new feature is that the Bell states must be embedded in a larger Hilbert space. That is, the correlated particles must be entangled in more than one degree of freedom.

Citations

• New High-Intensity Source of Polarization-Entangled Photon Pairs

Cited by

• Ultra-bright source of polarization-entangled photons
• Spintronic devices as quantum networks
• Loss-resistant state teleportation and entanglement swapping using a quantum-dot spin in an optical microcavity
• Hyperentangled Bell-state analysis
• Hyper-entanglement in a relativistic two-body system
• Optical Bell measurement by Fock filtering
• Hyperentanglement-assisted Bell-state analysis
• Classical hypercorrelation and wave-optics analogy of quantum superdense coding
• Environment-induced entanglement with a single photon
• Demonstrating the viability of universal quantum computation using teleportation and single-qubit operations
• Quantum Teleportation of a Polarization State with a Complete Bell State Measurement

Discussions

• Like @flippiefanus mentioned, this singlet state is invariant under rotation as it carries an overall angular momentum of zero. One of the triplet states $HH-VV$ also has this property for rotations a [stackexchange, 0 points]