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5 papers · 2 filters
Tunable photon-assisted bleaching of three-level systems for noise filtration
Chun-Hsu Su, Andrew D. Greentree, Raymond G. Beausoleil +4
Electromagnetically-induced transparency (EIT) exploits quantum coherence to burn subnatural linewidth holes within a spectral line. We investigate the less explored properties of…
Effects of multiple pairs on visibility measurements of entangled photons generated by spontaneous parametric processes
Hiroki Takesue, Kaoru Shimizu
Entangled photon-pair sources based on spontaneous parametric processes are widely used in photonic quantum information experiments. In this paper, we clarify the relationship betw…
Robust Unconditionally Secure Quantum Key Distribution with Two Nonorthogonal and Uninformative States
Marco Lucamarini, Giovanni Di Giuseppe, Kiyoshi Tamaki
We introduce a novel form of decoy-state technique to make the single-photon Bennett 1992 protocol robust against losses and noise of a communication channel. Two uninformative sta…
Quantum Error Correction for Beginners
Simon J. Devitt, Kae Nemoto, William J. Munro
Quantum error correction (QEC) and fault-tolerant quantum computation represent one of the most vital theoretical aspect of quantum information processing. It was well known from t…
Quantum measurement with chaotic apparatus
M. J. Everitt, W. J. Munro, T. P. Spiller
We study a dissipative quantum mechanical model of the projective measurement of a qubit. We demonstrate how a correspondence limit, damped quantum oscillator can realise chaotic-l…