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- Perimeter InstituteCA95 papers
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24 papers · 1 filter
Quantum Computing, Postselection, and Probabilistic Polynomial-Time
Scott Aaronson
I study the class of problems efficiently solvable by a quantum computer, given the ability to "postselect" on the outcomes of measurements. I prove that this class coincides with…
Quantum mechanics needs no interpretation
L. Skala, V. Kapsa
Probabilistic description of results of measurements and its consequences for understanding quantum mechanics are discussed. It is shown that the basic mathematical structure of qu…
Beta, Local SNIa data and the Great Attractor
John Lucey, David Radburn-Smith, Mike Hudson
We compare the measured peculiar velocities of 98 local (<150/h Mpc) type Ia supernovae (SNIa) with predictions derived from the PSCz. There is excellent agreement between the two…
Neel order, ring exchange and charge fluctuations in the half-filled Hubbard model
J. -Y. P. Delannoy, M. J. P. Gingras, P. C. W. Holdsworth +1
We investigate the ground state properties of the two dimensional half-filled one band Hubbard model in the strong (large-U) to intermediate coupling limit ({\it i.e.} away from th…
Quantum Walk on a Line with Two Entangled Particles
Y. Omar, N. Paunkovic, L. Sheridan +1
We introduce the concept of a quantum walk with two particles and study it for the case of a discrete time walk on a line. A quantum walk with more than one particle may contain en…
Spectroscopic observation of resonant electric dipole-dipole interactions between cold Rydberg atoms
K. Afrousheh, P. Z. Bohlouli, D. Vagale +3
Resonant electric dipole-dipole interactions between cold Rydberg atoms were observed using microwave spectroscopy. Laser-cooled Rb atoms in a magneto-optical trap were optically e…