A method to realize a probabilistic conditional sign flip gate for number state qubits based only on linear optics was described. The gate operates based on a nonconventional use of teleportation process. A hadamard gate on the control qubit was combined with a projective teleportation scheme mixing control and target for a destructive version of the gate. For the nondestructive version of the gate, a quantum encoder was used, which was realized through the interaction of the control qubit with an ancillary state composed of two maximally entangled photons. The maximum success probability was found to be 1/4, regardness of the method for generating the entangled states.

Conditional sign flip via teleportation

PAGANELLI, SIMONE
2004-01-01

Abstract

A method to realize a probabilistic conditional sign flip gate for number state qubits based only on linear optics was described. The gate operates based on a nonconventional use of teleportation process. A hadamard gate on the control qubit was combined with a projective teleportation scheme mixing control and target for a destructive version of the gate. For the nondestructive version of the gate, a quantum encoder was used, which was realized through the interaction of the control qubit with an ancillary state composed of two maximally entangled photons. The maximum success probability was found to be 1/4, regardness of the method for generating the entangled states.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/107804
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 5
social impact