582 citations · 3k across the 37 of their papers we have counts for
37 papers
An Extension of Heron's Formula to Tetrahedra, and the Projective Nature of Its Zeros
Timothy F. Havel
A natural extension of Heron's 2000 year old formula for the area of a triangle to the volume of a tetrahedron is presented. This gives the fourth power of the volume as a polynomi…
Embedding with a Rigid Substructure
Igor Najfeld, Timothy F. Havel
This paper presents a new distance geometry algorithm for calculating atomic coordinates from estimates of the interatomic distances, which maintains the positions of the atoms in…
Signatures of incoherence in a quantum information processor
Michael K. Henry, Alexey V. Gorshkov, Yaakov S. Weinstein +8
Incoherent noise is manifest in measurements of expectation values when the underlying ensemble evolves under a classical distribution of unitary processes. While many incoherent p…
Experimental Implementation of Logical Bell State Encoding
J. S. Hodges, P. Cappellaro, T. F. Havel +2
Liquid phase NMR is a general purpose test-bed for developing methods of coherent control relevant to quantum information processing. Here we extend these studies to the coherent c…
Subsystem Pseudo-pure States
P. Cappellaro, J. S. Hodges, T. F. Havel +1
A critical step in experimental quantum information processing (QIP) is to implement control of quantum systems protected against decoherence via informational encodings, such as q…
Principles of Control for Decoherence-Free Subsystems
P. Cappellaro, J. S. Hodges, T. F. Havel +1
Decoherence-Free Subsystems (DFS) are a powerful means of protecting quantum information against noise with known symmetry properties. Although Hamiltonians theoretically exist tha…