42 citations · 122 across the 10 of their papers we have counts for
6 papers · 1 filter
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…
The two-body random spin ensemble and a new type of quantum phase transition
Iztok Pizorn, Tomaz Prosen, Stefan Mossmann +1
We study the properties of a two-body random matrix ensemble for distinguishable spins. We require the ensemble to be invariant under the group of local transformations and analyze…
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…
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…
Meltdown in quantum computers needs not occur: Nuclear experiments show a way out
J. Flores, S. Yu. Kun, T. H. Seligman
We show that phase memory can be much longer than energy relaxation in systems with exponentially large dimensions of Hilbert space; this finding is documented by fifty years of nu…