ABSTRACT
Digital control of optics experiments has many advantages over analog control systems, specifically in terms of the scalability, cost, flexibility, and the integration of system information into one location. We present a digital control system, freely available for download online, specifically designed for quantum optics experiments that allows for automatic and sequential re-locking of optical components. We show how the inbuilt locking analysis tools, including a white-noise network analyzer, can be used to help optimize individual locks, and verify the long term stability of the digital system. Finally, we present an example of the benefits of digital locking for quantum optics by applying the code to a specific experiment used to characterize optical Schrödinger cat states.
Subject(s)
Medicine , Pain Management , Specialization , Adolescent , Child , Chronic Disease , Humans , Pain/physiopathology , Pain/psychology , RecurrenceABSTRACT
Neurological complications are frequent in the course of malignant hematological diseases. Five cases occurring in children are reported here: 4 presented with acute lymphoblastic leukemia and 1 with lymphoma. The clinical pattern was remarkably acute, with fever, seizures and a neurological deficit. Brain CT scan showed a limited hypodensity sometimes with a contrast uptake in the involved area in the first days or weeks. Seroconversion for measles virus occurred in 3 cases, associated with the presence of helix-like bodies in the cerebrospinal fluid and/or cerebral tissue. These case reports are discussed with respect to the neurological complications already reported in patients with hematologic malignancies. The hypothesis of measles-virus related encephalitis seems likely.
