Thu·Oct 8, 2020Thursday·October 8, 2020

1. 01*

   Measurements of D-D fusion neutrons generated in nanowire array laser plasma using Timepix3 detector

   Peter Rubovic · Aldo Bonasera🇺🇸 · Petr Burian · Zhengxuan Cao · Changbo Fu🇨🇳 · Defeng Kong · Haoyang Lan · Yao Lou · Wen Luo🇨🇳 · Chong Lv🇨🇳 · Yugang Ma🇨🇳 · Wenjun Ma and 15 other authors

   We present the results of neutron detection in a laser plasma experiment with a CD${}_2$ nanowire target. A hybrid semiconductor pixel detector Timepix3 covered with neutron converters was used for the detection of neutrons. D-D fusion neutrons were detected in a polyethylene converter through recoiled protons. Both the energy of recoiled protons and the time-of-flight of neutrons (and thus their energy) were determined. We report $(2.4\pm 1.8)\times 10^7$ neutrons generated for 1~J of incoming laser energy. Furthermore, we proved that Timepix3 is suitable for difficult operational conditions in laser experiments.

   ↳ physics.ins-detnucl-exphysics.plasm-phNucl.Instrum.Meth.A(2021)·3 citations
2. 02*

   Quantum simulation of open quantum systems in heavy-ion collisions

   Wibe A. de Jong🇺🇸 · Mekena Metcalf🇺🇸 · James Mulligan🇺🇸 · Mateusz Płoskoń🇺🇸 · Felix Ringer🇺🇸 · Xiaojun Yao🇺🇸

   We present a framework to simulate the dynamics of hard probes such as heavy quarks or jets in a hot, strongly-coupled quark-gluon plasma (QGP) on a quantum computer. Hard probes in the QGP can be treated as open quantum systems governed in the Markovian limit by the Lindblad equation. However, due to large computational costs, most current phenomenological calculations of hard probes evolving in the QGP use semiclassical approximations of the quantum evolution. Quantum computation can mitigate these costs, and offers the potential for a fully quantum treatment with exponential speedup over classical techniques. We report a simplified demonstration of our framework on IBM Q quantum devices, and apply the Random Identity Insertion Method (RIIM) to account for CNOT depolarization noise, in addition to measurement error mitigation. Our work demonstrates the feasibility of simulating open quantum systems on current and near-term quantum devices, which is of broad relevance to applications in nuclear physics, quantum information, and other fields.

   ↳ hep-phhep-exnucl-exnucl-th+1PRD(2021)·70 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.