"In this talk, I will share insights from my journey in driving innovation within the
quantum space across various sectors, including space, financial services,
healthcare & pharmaceuticals and across various emerging technologies.
Drawing from my current role at the National Quantum Computing Centre
(NQCC), I will discuss the transformative potential of quantum readiness driven
by the adoption of quantum computing use cases. I will briefly introduce the
NQCC, which was established under the UK government's National Quantum
Technologies Program, to address the challenge of scaling quantum computing
and discuss the various support mechanisms we have put in place to support
the quantum ecosystem in the Uk, including our flagship user engagement
program, SPARQ. Through these initiatives, the NQCC supports the discovery
of relevant quantum computing use cases and spearheads the development of
quantum computing applications. Throughout the talk, I will emphasize the
importance of engaging stakeholders from government, industry, academia, as
well as regulators and policymakers to spearhead responsible innovation."
I discuss how quantum mechanical effects prevent violations of causality in low energy processes, even when faster-than-light propagation is possible. At the classical level, faster-than-light propagation can be used to build "time-machine" configurations that violate causality. However, low-energy quantum excitations propagating on these backgrounds lead to divergent backreaction through loop effects. These divergences fully probe the UV dynamics of the system, making it impossible to prepare and describe causality violating configurations in the regime of validity of effective field theory. In light of these results, I conclude that effective field theories with negative Wilson coefficients or Galileon-symmetric interactions are not in tension with causality, despite leading to faster-than-light propagation.
This will be a gentle introduction to phase spaces and symplectic geometry. I hope to give a sense of what sort of questions are interesting to people working in this field.