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Events in Physics

Thursday, November 16, 2017

Theory Seminar: Sergii Strelchuk (Cambridge), Optimal Port-based Teleportation in Arbitrary Dimension, 1300 in PS1.28

Quantum teleportation is one of the earliest and most widely used primitives in Quantum Information Science which performs an arbitrary quantum state transfer between two spatially separated systems. It involves pre-sharing an entangled resource state and consists of three simple stages. The first stage involves a joint measurement of the teleported subsystem together with the share of the resource state on the sender’s side. In the second step, a classical measurement outcome is communicated to the receiver. The last step consists of applying a requisite correction operation which recovers the transmitted quantum state.

Port-based teleportation (PBT) is a unique set of teleportation protocols in that they do not require unitary correction. We study PBT protocols and fully characterize their performance for an arbitrary dimensions and number of ports. We find optimal probability of success and the fidelity of teleportation for all probabilistic and deterministic PBT schemes. In the latter case, surprisingly, the answer depends only on a largest eigenvalue of a certain easy to construct matrix which encodes the relationship between a set of Young diagrams and emerges as the the optimal solution to the relevant semidefinite program. To derive our results, we develop new mathematical tools to study the symmetries of the operators that arise in PBT protocols and belong to the algebra of partially transposed permutation operators. These tools can be used to characterize quantum systems with partial symmetries. Quantum states occurring in the PBT protocol are one such example. Systems with partial symmetries are widespread but in contrast to their permutational-invariant counterparts very little is known about how to efficiently estimate their properties.

Royal Society - Dorothy Hodgkin Fellowships

The Royal Society invite applications for the Dorothy Hodgkin fellowships. These enable early-career scientists who require a flexible working pattern due to personal circumstance to take the first step into an independent research career. Research may address all areas of the life and physical sciences, including engineering, but excluding clinical medicine.

Applicants must have completed their PhD but have no more than six years of research experience after receipt of their PhD award. Individuals who hold a permanent post in a university or non-profit organisation may not apply. Preference may be given to applications from underrepresented groups.

Approximately four to five awards are available. Funding covers 80 per cent of the basic salary costs up to £40,030 in the first year, estates costs and indirect costs; as well as research expenses worth up to £13,000 for the first year and up to £11,000 annually thereafter. Successful applicants who are about to start their first year are eligible to apply for a research grant worth up to £150,000.

STFC - UK-Thailand capacity building in software and hardware infrastructures and data handling through astronomy

NB: These are Newton Fund realted and must be ODA compliant. For details on ODA compliance, please ask Louisa Hopkins.

The Science and Technology Facilities Council, under the Newton Fund, and the National Astronomical Research Institute of Thailand invite applications for their capacity building in software and hardware infrastructures and data handling through astronomy call. This supports projects aimed at capacity building in software and hardware infrastructures and data handling through astronomy. It is anticipated that the funded projects will use a range of mechanisms, including training or summer schools and exchange programmes for PhD students, early career researchers, computer programmers, engineers, technicians and outreach. Call themes are:

•mechatronics or telescope control;

•very-long-baseline interferometry engineering, technology and research;

•data handling;

•outreach to support STEM education programme in schools.

Projects must include a collaboration of UK and Thailand based researchers.

Total funding available is £1 million from the Newton Fund, and TBH 15m from NARIT, to fund projects of 18 months to two years in duration.

EPSRC - Supergen Solar Network plus

The Engineering and Physical Sciences Research Council invites expressions of interest for its network plus grant under the Supergen solar programme. This aims to continue fostering networks with the wider energy community and strengthen those that currently exist within the solar community, in order to maintain the UK’s solar capacity and initiate investigations in novel and adventurous topics in the research area. Funding may support the following:

•engagement, communication and networking – including meetings, conferences and workshops to foster and strengthen relationships within the wider Solar community and other Supergen programme investments, disseminate information and maintaining an awareness of current and upcoming developments;

•multidisciplinary feasibility projects that would subsequently support the strategic use of EPSRC standard mode funding or other research council equivalent;

•early-career researchers or to provide staff retention to support equality, diversity and inclusion activities within the network;

•funding for the network to adapt and react quickly, to changes in the energy landscape.

Researchers base in UK higher education institutions, EPSRC-eligible research council institutes and independent research organisations may apply.

One grant, worth £1 million, is available over four years. It may be used towards core research, flexible fund, support staff including a hub manager as well as communications, engagement and networking activities.

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