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STACS
2005
Springer
14 years 2 months ago
Exact Quantum Algorithms for the Leader Election Problem
Abstract. It is well-known that no classical algorithm can solve exactly (i.e., in bounded time without error) the leader election problem in anonymous networks. This paper propose...
Seiichiro Tani, Hirotada Kobayashi, Keiji Matsumot...
CORR
2008
Springer
125views Education» more  CORR 2008»
13 years 9 months ago
Adversary lower bounds for nonadaptive quantum algorithms
We present two general methods for proving lower bounds on the query complexity of nonadaptive quantum algorithms. Both methods are based on the adversary method of Ambainis. We sh...
Pascal Koiran, Jürgen Landes, Natacha Portier...
COCO
2008
Springer
118views Algorithms» more  COCO 2008»
13 years 10 months ago
Quantum Expanders: Motivation and Constructions
: We define quantum expanders in a natural way. We give two constructions of quantum expanders, both based on classical expander constructions. The first construction is algebraic,...
Avraham Ben-Aroya, Oded Schwartz, Amnon Ta-Shma
CORR
2004
Springer
114views Education» more  CORR 2004»
13 years 8 months ago
Quantum Communication Cannot Simulate a Public Coin
We study the simultaneous message passing model of communication complexity. Building on the quantum fingerprinting protocol of Buhrman et al., Yao recently showed that a large cl...
Dmitry Gavinsky, Julia Kempe, Ronald de Wolf
UC
2009
Springer
14 years 3 months ago
On the Brightness of the Thomson Lamp: A Prolegomenon to Quantum Recursion Theory
Some physical aspects related to the limit operations of the Thomson lamp are discussed. Regardless of the formally unbounded and even infinite number of “steps” involved, the...
Karl Svozil