Quantum entanglement of four distant atoms trapped in different optical cavities

Journal Article · Sat May 01 00:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.052314· OSTI ID:20641127

Xubo, Zou; Pahlke, K; Mathis, W ^[1]

---

1. Institute TET, University of Hannover, Appelstrasse 9A, 30167 Hannover (Germany)

We propose a unified scheme to generate W states, Greenberger-Horne-Zeilinger (GHZ) states, and cluster states of four distant atoms, which are trapped separately in leaky cavities. The proposed schemes require linear optical elements and photon detectors with single-photon sensitivity. The quantum noise influences the fidelity of the generated states. Further, based on the four-photon coincidence detection, we propose another scheme to generate the W states and GHZ states of four distant atoms. The scheme is insensitive to the quantum noise, but cannot be used to generate the cluster states.

• OSTI ID: 20641127
• Journal Information: Physical Review. A, Vol. 69, Issue 5; Other Information: DOI: 10.1103/PhysRevA.69.052314; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CORRELATIONS
DETECTION
ENERGY LEVELS
GHZ RANGE
NOISE
PHOTONS
QUANTUM MECHANICS
RADIATION PRESSURE
SENSITIVITY
TRAPPING