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104
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STOC
2006
ACM
149views Algorithms» more  STOC 2006»
16 years 28 days ago
Bounded-error quantum state identification and exponential separations in communication complexity
We consider the problem of bounded-error quantum state identification: given either state 0 or state 1, we are required to output `0', `1' or `?' ("don't ...
Dmitry Gavinsky, Julia Kempe, Oded Regev, Ronald d...
112
Voted
STACS
2005
Springer
15 years 6 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»
15 years 21 days 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...
88
Voted
COCO
2008
Springer
118views Algorithms» more  COCO 2008»
15 years 2 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
88
Voted
TIT
2002
86views more  TIT 2002»
15 years 7 days ago
A low-rate bound on the reliability of a quantum discrete memoryless channel
We extend a low-rate improvement of the random coding bound on the reliability of a classical discrete memoryless channel (DMC) to its quantum counterpart. The key observation that...
Alexander Barg