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Conditioning two-party quantum teleportation within a three-party quantum channel

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arxiv quant-ph/0410213 v4 pith:GBAHAGFV submitted 2004-10-26 quant-ph

Conditioning two-party quantum teleportation within a three-party quantum channel

classification quant-ph
keywords quantumgaussianstateteleportationalicecharliethree-partyarbitrary
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider an arbitrary continuous-variable three-party Gaussian quantum state which is used to perform quantum teleportation of a pure Gaussian state between two of the parties (Alice and Bob). In turn, the third party (Charlie) can condition the process by means of local operations and classical communication. We find the best measurement that Charlie can implement on his own mode that preserves the Gaussian character of the three-mode state and optimizes the teleportation fidelity between Alice and Bob.

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