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The Universal Arrow of Time III: Gravitation theory
The Universal Arrow of Time III Gravitation theory General Relativity and Quantum Cosmology
2011/8/1
Abstract: The paper is dealing with the analysis of general relativity theory (theory of gravitation) from the point of view of thermodynamic time arrow. Within this framework "informational paradox" ...
Partitioned quantum cellular automata are intrinsically universal
Partitioned quantum cellular automata intrinsically universal
2010/11/4
There have been several non-axiomatic approaches taken to define Quantum Cellular Automata (QCA). Partitioned QCA (PQCA) are the most canonical of these non-axiomatic definitions. In this work we show...
Universal routes to spontaneous PT-symmetry breaking in non-hermitian quantum systems
Universal routes spontaneous PT-symmetry non-hermitian quantum systems
2010/11/8
PT-symmetric systems can have a real spectrum even when their Hamiltonian is non-hermitian, but develop a complex spectrum when the degree of non-hermiticity increases. Here we utilize random-matrix t...
Universal quantum control of two-electron spin quantum bits using dynamic nuclear polarization
Universal quantum control two-electron spin quantum bits dynamic nuclear polarization
2010/10/27
One fundamental requirement for quantum computation is to perform universal manipulations
of quantum bits at rates much faster than the qubit’s rate of decoherence. Recently,
fast gate operations ha...
How much time does a tunneling wave packet spent in traversing a barrier? Quantum mechanical calculations result in zero time inside a barrier . In the nineties analogous tunneling experiments with mi...
Universal Framework for Quantum Error-Correcting Codes
Universal Framework Quantum Error-Correcting Codes
2010/4/7
We present a universal framework for quantum error-correcting codes, i.e., the one that applies for the most general quantum error-correcting codes. This framework is established on the group algebra,...
The Necessary and Sufficient Conditions for a Universal
Conservation of a State of a Unitary Quantum Circuit
logic operators matrix logic quantum circuits
2007/8/15
2002Vol.38No.1pp.31-34DOI:
The Necessary and Sufficient Conditions for a Universal
Conservation of a State of a Unitary Quantum Circuit
LI Da-Fa,1 LI Xin-Xin,2 and HUANG Hong-Tao3...
Universal Quantum Entanglement Concentration Gate
Universal Quantum Entanglement Concentration Gate
2010/10/15
We construct a Universal Quantum Entanglement Concentration Gate (QEC-Gate). Special times operations of QECGate can transform a pure 2-level bipartite entangled state to nearly maximum entanglement. ...