274 citations · 1.3k across the 18 of their papers we have counts for
3 papers · 1 filter
Exponential speed-up with a single bit of quantum information: Testing the quantum butterfly effect
David Poulin, Robin Blume-Kohout, Raymond Laflamme +1
We present an efficient quantum algorithm to measure the average fidelity decay of a quantum map under perturbation using a single bit of quantum information. Our algorithm scales…
Robust polarization-based quantum key distribution over collective-noise channel
J. -C. Boileau, D. Gottesman, R. Laflamme +2
We present two polarization-based protocols for quantum key distribution. The protocols encode key bits in noiseless subspaces or subsystems, and so can function over a quantum cha…
Testing integrability with a single bit of quantum information
David Poulin, Raymond Laflamme, G. J. Milburn +1
We show that deterministic quantum computing with a single bit (DQC1) can determine whether the classical limit of a quantum system is chaotic or integrable using O(N) physical res…