Colin Benjamin

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We introduce a protocol for the fast simulation of n-dimensional quantum systems on n-qubit quantum computers with tunable couplings. A mapping is given between the control parameters of the quantum computer and the matrix elements of Hs(t), an arbitrary, real, time-dependent n × n dimensional Hamiltonian that is simulated in the n-dimensional 'single(More)
Parrondo's paradox is ubiquitous in games, ratchets and random walks.The apparent paradox, devised by Juan M. R. Parrondo, that two losing games A and B can produce an winning outcome has been adapted in many physical and biological systems to explain their working. However, proposals on demonstrating Parrondo's paradox using quantum walks failed in the(More)
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