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Experimental Demonstration of Continuous Variable Cloning with Phase-Conjugate Inputs
Metin Sabuncu, Ulrik L. Andersen, Gerd Leuchs
We report the experimental demonstration of continuous variable cloning of phase conjugate coherent states as proposed by Cerf and Iblisdir (Phys. Rev. Lett. 87, 247903 (2001)). In…
Quantum limits to center-of-mass measurements
Timothy Vaughan, Peter Drummond, Gerd Leuchs
We discuss the issue of measuring the mean position (center-of-mass) of a group of bosonic or fermionic quantum particles, including particle number fluctuations. We introduce a st…
Many-body quantum dynamics of polarisation squeezing in optical fibre
J. F. Corney, P. D. Drummond, J. Heersink +3
We report new experiments that test quantum dynamical predictions of polarization squeezing for ultrashort photonic pulses in a birefringent fibre, including all relevant dissipati…
Witnessing effective entanglement in a continuous variable prepare&measure setup and application to a QKD scheme using postselection
S. Lorenz, J. Rigas, M. Heid +3
We report an experimental demonstration of effective entanglement in a prepare&measure type of quantum key distribution protocol. Coherent polarization states and heterodyne measur…