The ultimate goal of the Internet of Things (IoT) is to build computing capabilities into every object in the world, but that’s a pipe dream with today’s chips. Now British chip designer Arm thinks it […]
Category: singularityhub
Quantum 5, 509 (2021). https://doi.org/10.22331/q-2021-07-26-509 The ability to simulate a fermionic system on a quantum computer is expected to revolutionize chemical engineering, materials design, nuclear physics, to name a few. Thus, optimizing the simulation circuits […]
Quantum 5, 508 (2021). https://doi.org/10.22331/q-2021-07-22-508 In general relativity, the description of spacetime relies on idealised rods and clocks, which identify a reference frame. In any concrete scenario, reference frames are associated to physical systems, which […]
Quantum 5, 507 (2021). https://doi.org/10.22331/q-2021-07-20-507 There has been an intense debate on the question as to whether a quanton, passing through a double-slit, experiences a ‘momentum kick’ due to the act of which-way detection. There […]
One of the biggest barriers standing in the way of useful quantum computers is how error-prone today’s devices are. Now, Google has provided an experimental demonstration of how to correct this problem and scale it […]
Quantum 5, 506 (2021). https://doi.org/10.22331/q-2021-07-19-506 Rutherford scattering is usually described by treating the projectile either classically or as quantum mechanical plane waves. Here we treat them as wave packets and study their head-on collisions with […]
Ever wonder why the internet, as a whole, didn’t break when Covid-19 hit? In a matter of weeks, online habits changed dramatically. Kids went to school on Zoom; adults followed suit at work. Desperate to […]
Quantum 5, 505 (2021). https://doi.org/10.22331/q-2021-07-15-505 We study the role of coherence in closed and open quantum batteries. We obtain upper bounds to the work performed or energy exchanged by both closed and open quantum batteries […]
Quantum 5, 504 (2021). https://doi.org/10.22331/q-2021-07-15-504 We introduce $textit{Partially Coherent Direct Sum}$ (PCDS) quantum channels, as a generalization of the already known $textit{Direct Sum}$ quantum channels. We derive necessary and sufficient conditions to identify the subset […]
Quantum 5, 503 (2021). https://doi.org/10.22331/q-2021-07-13-503 We argue that the quantum-theoretical structures studied in several recent lines of research cannot be adequately described within the standard framework of quantum circuits. This is in particular the case […]
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