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25 papers · 1 filter
Efficient classical simulation of cluster state quantum circuits with alternative inputs
Sahar Atallah, Michael Garn, Sania Jevtic +2
We provide new examples of pure entangled systems related to cluster state quantum computation that can be efficiently simulated classically. In cluster state quantum computation i…
Fluctuations and correlations in scattering on a resonance coupled to a chaotic background
D. V. Savin
We discuss and briefly overview recent progress with studying fluctuations in scattering on a resonance state coupled to the background of many chaotic states. Such a problem arise…
Hamiltonian for the zeros of the Riemann zeta function
Carl M. Bender, Dorje C. Brody, Markus P. Müller
A Hamiltonian operator is constructed with the property that if the eigenfunctions obey a suitable boundary condition, then the associated eigenvalues correspond to the no…
Consistency of PT-symmetric quantum mechanics
Dorje C. Brody
In recent reports, suggestions have been put forward to the effect that parity and time-reversal (PT) symmetry in quantum mechanics is incompatible with causality. It is shown here…
Fragile entanglement statistics
Dorje C. Brody, Lane P. Hughston, David M. Meier
If X and Y are independent, Y and Z are independent, and so are X and Z, one might be tempted to conclude that X, Y, and Z are independent. But it has long been known in classical…
Qudit Colour Codes and Gauge Colour Codes in All Spatial Dimensions
Fern H. E. Watson, Earl T. Campbell, Hussain Anwar +1
Two-level quantum systems, qubits, are not the only basis for quantum computation. Advantages exist in using qudits, d-level quantum systems, as the basic carrier of quantum inform…