14,949 research outputs found
Quantum Information Processing with Delocalized Qubits under Global Control
Any technology for quantum information processing (QIP) must embody within it
quantum bits (qubits) and maintain control of their key quantum properties of
superposition and entanglement. Typical QIP schemes envisage an array of
physical systems, such as electrons or nuclei, with each system representing a
given qubit. For adequate control, systems must be distinguishable either by
physical separation or unique frequencies, and their mutual interactions must
be individually manipulable. These difficult requirements exclude many
nanoscale technologies where systems are densely packed and continuously
interacting. Here we demonstrate a new paradigm: restricting ourselves to
global control pulses we permit systems to interact freely and continuously,
with the consequence that qubits can become delocalized over the entire device.
We realize this using NMR studies of three carbon-13 nuclei in alanine,
demonstrating all the key aspects including a quantum mirror, one- and
two-qubit gates, permutation of densely packed qubits and Deutsch algorithms.Comment: 4 pages, 5 figure
Differential dependencies of monocytes and neutrophils on dectin-1, dectin-2 and complement for the recognition of fungal particles in inflammation
Peer reviewedPublisher PD
Levity Polymorphism
Parametric polymorphism is one of the linchpins of modern typed programming, but it comes with a real performance penalty. We describe this penalty; offer a principled way to reason about it (kinds as calling conventions); and propose levity polymorphism. This new form of polymorphism allows abstractions over calling conventions; we detail and verify restrictions that are necessary in order to compile levity-polymorphic functions. Levity polymorphism has created new opportunities in Haskell, including the ability to generalize nearly half of the type classes in GHC\u27s standard library
Levity Polymorphism (extended version)
Parametric polymorphism is one of the lynchpins of modern typed programming. A function that can work seamlessly over a variety of types simplifies code, helps to avoid errors introduced through duplication, and and is easy to maintain. However, polymorphism comes at a very real cost, one that each language with support for polymorphism has paid in different ways. This paper describes this cost, proposes a theoretically simple way to reason about the costâthat kinds, not types, are calling conventionsâand details one approach to dealing with polymorphism that works in the context of a language, Haskell, that prizes both efficiency and a principled type system.
This approach, levity polymorphism, allows the user to abstract over calling conventions; we detail and verify restrictions that are necessary in order to compile levity-polymorphic functions. Lev- ity polymorphism has opened up surprising new opportunities for library design in Haskell
Levity Polymorphism (extended version)
Parametric polymorphism is one of the lynchpins of modern typed programming. A function that can work seamlessly over a variety of types simplifies code, helps to avoid errors introduced through duplication, and and is easy to maintain. However, polymorphism comes at a very real cost, one that each language with support for polymorphism has paid in different ways. This paper describes this cost, proposes a theoretically simple way to reason about the costâthat kinds, not types, are calling conventionsâand details one approach to dealing with polymorphism that works in the context of a language, Haskell, that prizes both efficiency and a principled type system.
This approach, levity polymorphism, allows the user to abstract over calling conventions; we detail and verify restrictions that are necessary in order to compile levity-polymorphic functions. Lev- ity polymorphism has opened up surprising new opportunities for library design in Haskell
Oligonucleotide therapies in the treatment of arthritis:a narrative review
Osteoarthritis (OA) and rheumatoid arthritis (RA) are two of the most common chronic inflammatory joint diseases, for which there remains a great clinical need to develop safer and more efficacious pharmacological treatments. The pathology of both OA and RA involves multiple tissues within the joint, including the synovial joint lining and the bone, as well as the articular cartilage in OA. In this review, we discuss the potential for the development of oligonucleotide therapies for these disorders by examining the evidence that oligonucleotides can modulate the key cellular pathways that drive the pathology of the inflammatory diseased joint pathology, as well as evidence in preclinical in vivo models that oligonucleotides can modify disease progression
- âŠ