Long-time Low-latency Quantum Memory by Dynamical Decoupling

Quantum memory is a central component for quantum information processing devices, and will be required to provide high-fidelity storage of arbitrary states, long storage times and small access latencies. Despite growing interest in applying physical-layer error-suppression strategies to boost fidelities, it has not previously been possible to meet such competing demands with a single approach. Here we use an experimentally validated theoretical framework to identify periodic repetition of a high-order dynamical decoupling sequence as a systematic strategy to meet these challenges. We provide analytic bounds-validated by numerical calculations-on the characteristics of the relevant control sequences and show that a "stroboscopic saturation" of coherence, or coherence plateau, can be engineered, even in the presence of experimental imperfection. This permits high-fidelity storage for times that can be exceptionally long, meaning that our device-independent results should prove instrumental in producing practically useful quantum technologies.Comment: abstract and authors list fixe

Explanation and elaboration of the SQUIRE (Standards for Quality Improvement Reporting Excellence) Guidelines, V.2.0: examples of SQUIRE elements in the healthcare improvement literature

Since its publication in 2008, SQUIRE (Standards for Quality Improvement Reporting Excellence) has contributed to the completeness and transparency of reporting of quality improvement work, providing guidance to authors and reviewers of reports on healthcare improvement work. In the interim, enormous growth has occurred in understanding factors that influence the success, and failure, of healthcare improvement efforts. Progress has been particularly strong in three areas: the understanding of the theoretical basis for improvement work; the impact of contextual factors on outcomes; and the development of methodologies for studying improvement work. Consequently, there is now a need to revise the original publication guidelines. To reflect the breadth of knowledge and experience in the field, we solicited input from a wide variety of authors, editors and improvement professionals during the guideline revision process. This Explanation and Elaboration document (E&E) is a companion to the revised SQUIRE guidelines, SQUIRE 2.0. The product of collaboration by an international and interprofessional group of authors, this document provides examples from the published literature, and an explanation of how each reflects the intent of a specific item in SQUIRE. The purpose of the guidelines is to assist authors in writing clearly, precisely and completely about systematic efforts to improve the quality, safety and value of healthcare services. Authors can explore the SQUIRE statement, this E&E and related documents in detail at http://www.squire-statement.org

A missense mutation in Katnal1 underlies behavioural, neurological and ciliary anomalies

Microtubule severing enzymes implement a diverse range of tissue-specific molecular functions throughout development and into adulthood. Although microtubule severing is fundamental to many dynamic neural processes, little is known regarding the role of the family member Katanin p60 subunit A-like 1, KATNAL1, in central nervous system (CNS) function. Recent studies reporting that microdeletions incorporating the KATNAL1 locus in humans result in intellectual disability and microcephaly suggest that KATNAL1 may play a prominent role in the CNS; however, such associations lack the functional data required to highlight potential mechanisms which link the gene to disease symptoms. Here we identify and characterise a mouse line carrying a loss of function allele in Katnal1. We show that mutants express behavioural deficits including in circadian rhythms, sleep, anxiety and learning/memory. Furthermore, in the brains of Katnal1 mutant mice we reveal numerous morphological abnormalities and defects in neuronal migration and morphology. Furthermore we demonstrate defects in the motile cilia of the ventricular ependymal cells of mutants, suggesting a role for Katnal1 in the development of ciliary function. We believe the data we present here are the first to associate KATNAL1 with such phenotypes, demonstrating that the protein plays keys roles in a number of processes integral to the development of neuronal function and behaviour.Molecular Psychiatry advance online publication, 4 April 2017; doi:10.1038/mp.2017.54

Is team science valued in the academic promotions process? A mixed-methods case study

IntroductionTraditionally, research institutions have valued individual achievements such as principal investigator and lead authorship status as primary indicators in the academic promotions process. However, the scientific process increasingly requires collaboration by teams of researchers across multiple disciplines, sometimes including experts outside academia, often referred to as "team science." We sought to determine whether there is agreement about what constitutes team science at our academic institution and whether current promotion processes sufficiently incentivize faculty participation in team science.MethodsWe conducted 20 qualitative interviews with academic leaders (N = 24) at the University of California, San Francisco (UCSF) who supervise faculty promotions processes. Participants were asked to share their definitions of team science and the extent to which faculty receive credit for engaging in these activities during the promotions process. A subset of participants also completed a brief survey in which they ranked the importance of participation in team science relative to other factors that are traditionally valued in the promotions process. Interview data were examined by two analysts using structural coding. Descriptive analyses were conducted of survey responses.ResultsThough team science is valued at UCSF, definitions of team science and the approach to assigning credit for team science in academic promotions processes varied widely. Participants suggested opportunities to bolster support for team science.ConclusionsEfforts to define and provide transparent faculty incentives for team science should be prioritized at institutions, like UCSF, seeking to advance faculty engagement in collaborative research

Reenvisioning success for programs supporting pregnant women with problematic substance use.

Community-based, integrated, primary care maternity programs for pregnant women affected by problematic substance use are emerging as effective models for engaging women affected by multiple health and social issues. Although addictions services have historically been evaluated by individual achievement of abstinence, new definitions of program success are required as addiction comes to be viewed as a chronic illness. We conducted a mixed-methods study to follow the formative development stages of a community-based program, identifying key evaluation indicators and processes related to this program, program team members, and women and families served. As this program model develops, it is critical that providers, community partners, and health system leaders collaborate to frame definitions of success in ways helpful for guiding program development