42 citations · 100 across the 6 of their papers we have counts for
6 papers
One, Two, and Qubit Decoherence
Carlos Pineda
We study decoherence of one, two, and non-interacting qubits. Decoherence, measured in terms of purity, is calculated in linear response approximation, making use of the specta…
Random matrix models for decoherence and fidelity decay in quantum information systems
Carlos Pineda, Thomas H. Seligman
This course aims to introduce the student to random matrix models for decoherence and fidelity decay. They present a very powerful alternate approach, that emphasizes the disordere…
A trivial observation on time reversal in random matrix theory
L. Kaplan, F. Leyvraz, C. Pineda +1
It is commonly thought that a state-dependent quantity, after being averaged over a classical ensemble of random Hamiltonians, will always become independent of the state. We point…
Decoherence of an -qubit quantum memory
Thomas Gorin, Carlos Pineda, Thomas H. Seligman
We analyze decoherence of a quantum register in the absence of non-local operations i.e. of non-interacting qubits coupled to an environment. The problem is solved in terms of…
Non-universal level statistics in a chaotic quantum spin chain
Carlos Pineda, Tomaž Prosen
We study the level statistics of an interacting multi-qubit system, namely the kicked Ising spin chain, in the regime of quantum chaos. Long range quasi-energy level statistics sho…
Decoherence of two qubit systems: A random matrix description
C. Pineda, T. Gorin, T. H. Seligman
We study decoherence of two non-interacting qubits. The environment and its interaction with the qubits are modelled by random matrices. Decoherence, measured in terms of purity, i…