Intrinsically narrowband pair photon generation in microstructured fibres

In this paper we study the tailoring of photon spectral properties generated by four-wave mixing in a birefringent photonic crystal fibre (PCF). The aim is to produce intrinsically narrow-band photons and hence to achieve high non-classical interference visibility and generate high fidelity entanglement without any requirement for spectral filtering, leading to high effective detection efficiencies. We show unfiltered Hong-Ou-Mandel interference visibilities of 77% between photons from the same PCF, and 80% between separate sources. We compare results from modelling the PCF to these experiments and analyse photon purities.Comment: 23 pages, 17 figures, Comments Welcom

Ripples in a pond: Do social work students need to learn about terrorism?

In the face of heightened awareness of terrorism, however it is defined, the challenges for social work are legion. Social work roles may include working with the military to ensure the well-being of service-men and women and their families when bereaved or injured, as well as being prepared to support the public within the emergency context of an overt act of terrorism. This paper reviews some of the literature concerning how social work responds to confl ict and terrorism before reporting a smallscale qualitative study examining the views of social work students, on a qualifying programme in the UK, of terrorism and the need for knowledge and understanding as part of their education

Guernsey voluntary and charitable sector research study

The study‘s focus was on social inclusion, and how voluntary and charitable organisations try to overcome the barriers and inequalities which prevent people participating on equal terms in society. Its aim was to identify gaps in provision and ways to fill them. Its methodology included a literature review, focus groups and a questionnaire.The report reviews literature and research, from the UK and Europe as well as Guernsey, on social exclusion, social inclusion, the voluntary sector and its changing relationship with the statutory sector. Some of the themes of this broader review are reflected in the findings of the study of the VCS in Guernsey.Most households in Guernsey are not at risk of becoming poor in the near future, but the 2007 Household Expenditure Survey indicated that 16.6% of respondents lived in households with an income below 60% of median income. Those most affected by poverty are lone parent households, single pensioner households and households with children. This means poorer diet, worse health and housing, greater vulnerability to crime and less social support

Community engagement to enhance trust between Gypsy/Travellers, and maternity, early years’ and child dental health services: protocol for a multimethod exploratory study

Gypsy/Travellers have poor health and experience discrimination alongside structural and cultural barriers when accessing health services and consequently may mistrust those services. Our study aims to investigate which approaches to community engagement are most likely to be effective at enhancing trust between Gypsy/Travellers and mainstream health services. Methods This multi-method 30-month study, commenced in June 2015, and comprises four stages. 1. Three related reviews: a) systematic review of Gypsy/Travellers’ access to health services; b) systematic review of reviews of how trust has been conceptualised within healthcare; c) realist synthesis of community engagement approaches to enhance trust and increase Gypsy/Travellers’ participation in health services. The reviews will consider any economic literature; 2. Online consultation with health and social care practitioners, and civil society organisations on existing engagement activities, including perceptions of barriers and good practice; 3. Four in-depth case studies of different Gypsy/Traveller communities, focusing on maternity, early years and child dental health services. The case studies include the views of 32–48 mothers of pre-school children, 32–40 healthcare providers and 8–12 informants from third sector organisations. 4. Two stakeholder workshops exploring whether policy options are realistic, sustainable and replicable. Case study data will be analysed thematically informed by the evaluative framework derived from the realist synthesis in stage one. The main outputs will be: a) an evaluative framework of Gypsy/Travellers’ engagement with health services; b) recommendations for policy and practice; c) evidence on which to base future implementation strategies including estimation of costs. Discussion Our novel multi-method study seeks to provide recommendations for policy and practice that have potential to improve uptake and delivery of health services, and to reduce lifetime health inequalities for Gypsy/Travellers. The findings may have wider resonance for other marginalised populations. Strengths and limitations of the study are discussed

‘Everyday bordering’ in England, Sweden and Bulgaria: Social work decision-making processes when working with migrant family members

The global movement of people is a growing feature of contemporary life, and it is essential that professionals providing support services know how to best engage with migrant families. However, despite globalisation and the related processes of de-bordering, borders continue to remain significant and, in contemporary life, the ways in which immigration is controlled and surveilled—bureaucratically and symbolically—are multiple. The paper draws on data gathered in the immediate period following the so called 2015 European ‘migration crisis’ and examines whether and in what ways social workers in three European countries—Bulgaria, Sweden and England—enact bordering in their work with migrant family members. We apply the concept of ‘everyday bordering’ to the data set: whilst borders are traditionally physical and at the boundary between nation states, bordering practices increasingly permeate everyday life in bureaucratic and symbolic forms. Overall, the data show that everyday bordering affects social work practice in three ways: by social workers being required to engage in bordering as an everyday practice; by producing conditions that require social workers to negotiate borders; and in revealing aspects of symbolic everyday bordering. Our analyses shows that ‘everyday bordering’ practices are present in social work decision-making processes in each country, but the forms they take vary across contexts. Analysis also indicates that, in each country, social workers recognise the ways in which immigration control can impact on the families with whom they work but that they can also inadvertently contribute to the ‘othering’ of migrant populations

Asylum seekers, children's rights and social work

Although it is only a minority of displaced and persecuted people globally who seek refuge in 'Western' countries, they meet an increasingly hostile reception. This paper focuses on the situation facing children seeking asylum with or without their families in Britain and Australia, and the implications for children's rights and for social work. The policy background and its racist foundations in both countries are outlined. Despite geopolitical differences, there are unnerving parallels. Legislative changes and policy complexity signal increasingly punitive attitudes towards asylum seekers. The situation of children and families in the community is discussed in terms of the exclusion of asylum seekers from basic rights, and specific issues for separated children. Even more damaging is the incarceration of children and families in detention centres, and the emerging research is explored. In both countries there is widespread flouting of children's rights, and children also feature as pawns in ideological contests. However, they also act autonomously and illustrate an inclusive model of citizenship. The role of social workers in the statutory and voluntary sectors is considered, and the paper concludes with a discussion of the challenges for social work of avoiding collusion with repressive policies and actively promoting human rights