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Parametrization and Distillability of ThreeQubit Entanglement
"... There is an ongoing effort to quantify entanglement of quantum pure states for systems with more than two subsystems. In this paper, we consider three general approaches to this problem for threequbit states: choosing a basis which puts the state into a standard form, enumerating “local invariants” ..."
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There is an ongoing effort to quantify entanglement of quantum pure states for systems with more than two subsystems. In this paper, we consider three general approaches to this problem for threequbit states: choosing a basis which puts the state into a standard form, enumerating “local invariants
ThreeParty Quantum State Sharing of an Arbitrary Unknown TwoQubit State Based on Entanglement Swapping and BellState Measurements∗
, 2008
"... Abstract We propose a scheme for sharing an arbitrary unknown twoqubit state among three parties by using a fourqubit clusterclass state and a Bell state as a quantum channel. With a quantum controlled phase gate (QCPG) operation and a local unitary operation, any one of the two agents has the ac ..."
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Abstract We propose a scheme for sharing an arbitrary unknown twoqubit state among three parties by using a fourqubit clusterclass state and a Bell state as a quantum channel. With a quantum controlled phase gate (QCPG) operation and a local unitary operation, any one of the two agents has
A classification of entanglement in threequbit systems
, 707
"... We present a classification of threequbit states based in their threequbit and reduced twoqubit entanglements. For pure states these criteria can be easily implemented, and the different types can be related with sets of equivalence classes under Local Unitary operations. For mixed states charact ..."
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We present a classification of threequbit states based in their threequbit and reduced twoqubit entanglements. For pure states these criteria can be easily implemented, and the different types can be related with sets of equivalence classes under Local Unitary operations. For mixed states
Classification and measure of entanglement in threequbit systems
, 707
"... We present a classification of threequbit states based in their threequbit and reduced twoqubit entanglements. For pure states these criteria can be easily implemented, and the different types can be related with sets of equivalence classes under Local Unitary operations. For mixed states charact ..."
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We present a classification of threequbit states based in their threequbit and reduced twoqubit entanglements. For pure states these criteria can be easily implemented, and the different types can be related with sets of equivalence classes under Local Unitary operations. For mixed states
Entanglement of Formation of an Arbitrary State of Two Qubits
, 1998
"... The entanglement of a pure state of a pair of quantum systems is defined as the entropy of either member of the pair. The entanglement of formation of a mixed state ρ is defined as the minimum average entanglement of a set of pure states constituting a decomposition of ρ. An earlier paper [Phys. Rev ..."
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Cited by 192 (0 self)
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. Rev. Lett. 78, 5022 (1997)] conjectured an explicit formula for the entanglement of formation of a pair of binary quantum objects (qubits) as a function of their density matrix, and proved the formula to be true for a special class of mixed states. The present paper extends the proof to arbitrary
Experimental quantum teleportation of a twoqubit composite system
, 2006
"... Quantum teleportation1, a way to transfer the state of a quantum system from one location to another, is central to quantum communication2 and plays an important role in a number of quantum computation protocols3–5. Previous experimental demonstrations have been implemented with single photonic6–11 ..."
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Cited by 6 (0 self)
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photon interferometer to teleport an arbitrary polarization state of two photons. The observed teleportation fidelities for different initial states are all well beyond the state estimation limit of 0.40 for a twoqubit system14. Not only does our sixphoton interferometer provide an important step towards
Freudenthal triple classification of threequbit entanglement
, 2009
"... We show that the threequbit entanglement classes: (0) Null, (1) Separable ABC, (2a) Biseparable ABC, (2b) Biseparable BCA, (2c) Biseparable CAB, (3) W and (4) GHZ correspond respectively to ranks 0, 1, 2a, 2b, 2c, 3 and 4 of a Freudenthal triple system defined over the Jordan algebra C ⊕ C ⊕ C ..."
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Cited by 13 (3 self)
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We show that the threequbit entanglement classes: (0) Null, (1) Separable ABC, (2a) Biseparable ABC, (2b) Biseparable BCA, (2c) Biseparable CAB, (3) W and (4) GHZ correspond respectively to ranks 0, 1, 2a, 2b, 2c, 3 and 4 of a Freudenthal triple system defined over the Jordan algebra C ⊕ C
Entanglement dynamics for a sixqubit model in cavity QED
, 2008
"... We study entanglement dynamics for a sixqubit model in cavity QED, where three twolevel atoms A,B and C are initially prepared in a Greenberger–Horne–Zeilinger (GHZ)like state and locally coupled with the independent cavities a, b and c, respectively. We consider entanglement evolution via negati ..."
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We study entanglement dynamics for a sixqubit model in cavity QED, where three twolevel atoms A,B and C are initially prepared in a Greenberger–Horne–Zeilinger (GHZ)like state and locally coupled with the independent cavities a, b and c, respectively. We consider entanglement evolution via
Quantum tasks using six qubit cluster states
, 2009
"... The usefulness of the recent experimentally realized six photon cluster state by C. Y. Lu et al. (2007 Nature 3 91), is investigated for quantum communication protocols like teleportation, quantum information splitting (QIS), remote state preparation and dense coding. We show that the present state ..."
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can be used for the teleportation of an arbitrary two qubit state deterministically. Later we devise two distinct protocols for the QIS of an arbitrary two qubit state among two parties and systematically compare their relative merits in terms of classical communication and security. Sixteen
Results 1  10
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