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4 papers · 2 filters
Notes on the Fidelity of Symplectic Quantum Error-Correcting Codes
Mitsuru Hamada
Two observations are given on the fidelity of schemes for quantum information processing. In the first one, we show that the fidelity of a symplectic (stabilizer) code, if properly…
Binegativity and geometry of entangled states in two qubits
Satoshi Ishizaka
We prove that the binegativity is always positive for any two-qubit state. As a result, as suggested by the previous works, the asymptotic relative entropy of entanglement in two q…
Observation of an oscillatory correlation function of multimode two-photon pairs
Hayato Goto, Yasuo Yanagihara, Haibo Wang +2
An oscillatory correlation function has been observed by the coincidence counting of multimode two-photon pairs produced with a degenerate optical parametric oscillator far below t…
Two-photon interference of multimode two-photon pairs with an unbalanced interferometer
Hayato Goto, Haibo Wang, Tomoyuki Horikiri +2
Two-photon interference of multimode two-photon pairs produced by an optical parametric oscillator has been observed for the first time with an unbalanced interferometer. The time…