Entanglement of Remote Atomic Qubits

2005/11/02 by D. N. Matsukevich, Dzmitry Matsukevich, T. Chanelière +7 · 239 citations
Computer Science · Physics and Astronomy · #Cluster state #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Quantum network #Quantum optics and atomic interactions #Quantum teleportation #Qubit #W state #quant-ph

paper · pdf · doi:10.1103/physrevlett.96.030405

published in Physical Review Letters 96(3), 030405 (American Physical Society) · 5 pages, 3 figures

arxiv created 2005/11/02 · openalex publication_date 2006/01/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We report observations of entanglement of two remote atomic qubits, achieved by generating an entangled state of an atomic qubit and a single photon at site , transmitting the photon to site in an adjacent laboratory through an optical fiber, and converting the photon into an atomic qubit. Entanglement of the two remote atomic qubits is inferred by performing, locally, quantum state transfer of each of the atomic qubits onto a photonic qubit and subsequent measurement of polarization correlations in violation of the Bell inequality [EQUATION: SEE TEXT]. We experimentally determine [EQUATION: SEE TEXT]. Entanglement of two remote atomic qubits, each qubit consisting of two independent spin wave excitations, and reversible, coherent transfer of entanglement between matter and light represent important advances in quantum information science.

Citations

• Experimental quantum teleportation
• Creation of entangled states of distant atoms by interference
• Storage and retrieval of single photons transmitted between remote quantum memories
• Quantum cryptography based on Bell’s theorem
• Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolsky-Rosen Channels
• Long-distance quantum communication with atomic ensembles and linear optics
• Probabilistic Generation of Entanglement in Optical Cavities
• Electromagnetically Induced Transparency

Cited by

• Measurement-Device-Independent Verification of a Quantum Memory
• Colloquium: The Einstein-Podolsky-Rosen paradox: From concepts to applications
• Quantum Interference of Electromagnetic Fields from Remote Quantum Memories
• Self-testing with finite statistics enabling the certification of a quantum network link
• Frequency-filtered storage of parametric fluorescence with electromagnetically induced transparency
• Quantum Non-Gaussian Photon Coincidences
• When Entanglement Meets Classical Communications: Quantum Teleportation for the Quantum Internet