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127
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ALGORITHMICA
2010
15 years 2 months ago
2010
In this paper, we give a lower bound of (n(d-1)/2 ) on the quantum query complexity for finding a fixed point of a discrete Brouwer function over grid [1 : n]d . Our bound is near...
103
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DATE
2004
IEEE
15 years 6 months ago
2004
IEEE
We show how to implement an arbitrary two-qubit unitary operation using any of several quantum gate libraries with small a priori upper bounds on gate counts. In analogy to librar...
123
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ISIPTA
2003
IEEE
15 years 7 months ago
2003
IEEE
Based on the coherence principle of de Finetti and a related notion of generalized coherence (g-coherence), we adopt a probabilistic approach to uncertainty based on conditional p...
164
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FOCS
2009
IEEE
15 years 9 months ago
2009
IEEE
Abstract— Thorup and Zwick, in their seminal work, introduced the approximate distance oracle, which is a data structure that answers distance queries in a graph. For any integer...
118
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DAM
1998
15 years 2 months ago
1998
We first consider so-called (1,+s)-branching programs in which along every consistent path at most s variables are tested more than once. We prove that any such program computing...