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7 papers · 2 filters
Noncontextuality, Finite Precision Measurement and the Kochen-Specker Theorem
Jonathan Barrett, Adrian Kent
Meyer recently queried whether non-contextual hidden variable models can, despite the Kochen-Specker theorem, simulate the predictions of quantum mechanics to within any fixed fini…
Quantum games of asymmetric information
Jiangfeng Du, Hui Li, Chenyong Ju
We investigate quantum games in which the information is asymmetrically distributed among the players, and find the possibility of the quantum game outperforming its classical coun…
Orbits of quantum states and geometry of Bloch vectors for -level systems
S. G. Schirmer, T. Zhang, J. V. Leahy
Physical constraints such as positivity endow the set of quantum states with a rich geometry if the system dimension is greater than two. To shed some light on the complicated stru…
On Feedback and the Classical Capacity of a Noisy Quantum Channel
Garry Bowen, Rajagopal Nagarajan
In Shannon information theory the capacity of a memoryless communication channel cannot be increased by the use of feedback from receiver to sender. In this paper the use of classi…
An experimental observation of geometric phases for mixed states using NMR interferometry
Jiangfeng Du, Ping Zou, Mingjun Shi +6
Examples of geometric phases abound in many areas of physics. They offer both fundamental insights into many physical phenomena and lead to interesting practical implementations. O…
Direct estimation of functionals of density operators by local operations and classical communication
Carolina Moura Alves, Pawel Horodecki, Daniel K. L. Oi +2
We present a method of determining important properties of a shared bipartite quantum state, within the ``distant labs'' paradigm, using \emph{only} local operations and classical…