arXiv subjects

L. Schulman

Publications and source records attributed to L. Schulman.

2 recordsLinked to original sources

arXiv1997

Bounds on Decoherence and Error

When a confined system interacts with its walls (treated quantum mechanically), there is an intertwining of degrees of freedom. We show that this need not lead to entanglement, hence decoherence. It will generally lead to error. The wave function optimization required to avoid decoherence is also examined.

quant-ph↗

arXiv1997

Measure of Entaglement

The extent to which a given wave function, $ψ$, is entangled is measured by minimizing the norm of $ψ$ minus all possible unentangled functions. This measure is given by the largest eigenvalue of $ψ^\dagger ψ$, considered as an operator. The definition is basis independent.

quant-ph↗