Observation of Three-Photon Greenberger-Horne-Zeilinger Entanglement

Bouwmeester, Dirk; Pan, Jian-Wei; Daniell, Matthew; Weinfurter, Harald; Zeilinger, Anton

doi:10.1103/physrevlett.82.1345

Cited by 1,027 publications

(847 citation statements)

References 25 publications

Supporting

Mentioning

827

Contrasting

Unclassified

Order By: Relevance

“…In particular, polarization-entangled Einstein-Podolsky-Rosen (EPR) pairs are often used as the basic blocks for generating multi-photon entangled states or as resources for performing quantum teleportation tasks. A number of experiments involving two photon pairs [1][2][3][4][5][6][7][8] and a few experiments involving five photons (two photon pairs plus one single photon) 9 or three photon pairs [10][11][12][13] have been carried out to demonstrate various protocols in quantum communication and linear optical quantum computing. Typical systems for two-photon-pair experiments use a frequency-doubled Ti:sapphire mode-locked laser as a pump, with a repetition rate of ~80 MHz, a pulse duration of ~150 fs, and an operating wavelength of ~400 nm.…”

mentioning

confidence: 99%

Experimental generation of an eight-photon Greenberger–Horne–Zeilinger state

et al. 2011

View full text Add to dashboard Cite

multi-partite entangled states are important for developing studies of quantum networking and quantum computation. To date, the largest number of particles that have been successfully manipulated is 14 trapped ions. Yet in quantum information science, photons have particular advantages over other systems. In particular, they are more easily transportable qubits and are more robust against decoherence. Thus far, the largest number of photons to have been successfully manipulated in an experiment is six. Here we demonstrate, for the first time, an eight-photon Greenberger-Horne-Zeilinger state with a measured fidelity of 0.59 ± 0.02, which proved the presence of genuine eight-partite entanglement. This is achieved by improving the photon detection efficiency to 25% with a 300-mW pump laser. With this state, we also demonstrate an eight-party quantum communication complexity scenario. This eight-photon entangled-state source may be useful in one-way quantum computation, quantum networks and other quantum information processing tasks.

show abstract

mentioning

confidence: 99%

Experimental generation of an eight-photon Greenberger–Horne–Zeilinger state

et al. 2011

View full text Add to dashboard Cite

show abstract

“…of the minimal left ideal of Cl 3 ⊗ Cl 3 ⊗ Cl 3 , corresponding to the GHZ state [42] in terms of the Hilbert space, it is insensitive to the effect of noise Γ 1 , i.e. this space is a decoherence-free subspace be the effect of noise Γ 1 .…”

Section: Algebraic Construction Of Decoherence-free Subspacesmentioning

confidence: 99%

An Approach by Representation of Algebras for Decoherence-Free Subspaces

Trindade

Pinto

Vianna

2015

Adv. Appl. Clifford Algebras

View full text Add to dashboard Cite

The aim of this paper is to present a general algebraic formulation for the Decoherence-Free Subspaces (DFSs). For this purpose, we initially generalize some results of Pauli and Artin about semisimple algebras. Then we derive orthogonality theorems for algebras analogous to finite groups. In order to build the DFSs we consider the tensor product of Clifford algebras and left minimal ideals. Furthermore, we show that standard applications of group theory in quantum chemistry can be obtained in our formalism. Advantages and some perspectives are also discussed.

show abstract

“…Greenberger-Horne-Zeilinger (GHZ) states have attracted much attention in recent literature [1][2][3][4][5][6][7][8][9][10][11] as experiments which are done with these states disprove local-realism, without the use of Bell's inequalities. In many articles it was claimed that GHZ states violate locality.…”

Section: Introductionmentioning

confidence: 99%