30,408 research outputs found
Codes for Simultaneous Transmission of Quantum and Classical Information
We consider the characterization as well as the construction of quantum codes
that allow to transmit both quantum and classical information, which we refer
to as `hybrid codes'. We construct hybrid codes with
length and distance , that simultaneously transmit qudits and
symbols from a classical alphabet of size . Many good codes such as
, , ,
, , ,
, , ,
, , ,
have been found. All these codes have better parameters
than hybrid codes obtained from the best known stabilizer quantum codes.Comment: 6 page
Existence of SRB Measures for A Class of Partially Hyperbolic Attractors in Banach spaces
In this paper, we study the existence of SRB measures for infinite
dimensional dynamical systems in a Banach space. We show that if the system has
a partially hyperbolic attractor with nontrivial finite dimensional unstable
directions, then it has an SRB measure.Comment: arXiv admin note: text overlap with arXiv:1508.0330
SRB Measures for A Class of Partially Hyperbolic Attractors in Hilbert spaces
In this paper, we study the existence of SRB measures and their properties
for infinite dimensional dynamical systems in a Hilbert space. We show several
results including (i) if the system has a partially hyperbolic attractor with
nontrivial finite dimensional unstable directions, then it has at least one SRB
measure; (ii) if the attractor is uniformly hyperbolic and the system is
topological mixing and the splitting is H\"older continuous, then there exists
a unique SRB measure which is mixing; (iii) if the attractor is uniformly
hyperbolic and the system is non-wondering and and the splitting is H\"older
continuous, then there exists at most finitely many SRB measures; (iv) for a
given hyperbolic measure, there exist at most countably many ergodic components
whose basin contains an observable set
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