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Quantum Corrections to Fidelity Decay in Chaotic Systems
Fidelity Decay Quantum Corrections Chaotic Systems
2010/4/8
By considering correlations between classical orbits we derive semiclassical expressions for the decay of the quantum fidelity amplitude for classically chaotic quantum systems, as well as for its squ...
High fidelity transport of trapped-ion qubits through an X-junction trap array
High fidelity transport of trapped-ion qubits through an X-junction trap array
2010/4/7
We report reliable transport of 9Be+ ions through a 2-D trap array that includes a separate loading/reservoir zone and an "X-junction". During transport the ion's kinetic energy in its local well incr...
Fidelity in topological quantum phases of matter
Fidelity topological quantum phases of matter
2010/4/16
Quantum phase transitions that take place between two distinct topological phases remain an unexplored area for the applicability of the fidelity approach. Here, we apply this method to spin systems i...
Berry Phase and Fidelity in the Dicke model with $A^{2}$ term
Berry Phase Fidelity Dicke model with $A^{2}$ term
2010/4/8
The instability, so-called the quantum-phase-like transition, in the Dicke model with a rotating-wave approximation for finite $N$ atoms is investigated in terms of the Berry phase and the fidelity. I...
Average Fidelity of Teleportation in Quantum Noise Channel
average fidelity teleportation quantum noise channel Bloch sphere
2007/8/15
2006Vol.45No.5pp.802-806DOI:
Average Fidelity of Teleportation in Quantum Noise Channel
HAO Xiang, ZHANG Rong, and ZHU Shi-Qun
School of Physical Science and Technology,...