Foundation system

quantum: RRI scientists use Quantum computers to help test foundation theory

Going beyond the usually known use of quantum computers – performing certain tasks at an exponentially faster rate than classical computers – scientists at the Raman Research Institute (RRI) have, for the first time, used computers for a new purpose to directly test the foundations of the theory on which their work is based.
A group of scientists from RRI, an autonomous institute of the Department of Science and Technology (DST), in a collaborative research used quantum computers to perform precision tests of fundamental aspects of quantum theory called Sorkin’s and Peres’ tests.
“Quantum mechanics, like any physical theory, is based on experiments. This means that the experiments are used to justify certain axioms from which the complete theory can be logically deduced. While much of the scientific community is invested in building devices for quantum computing applications, a separate community is invested in precision testing of fundamental aspects of quantum theory itself. on in a statement from the DST.
The first test of the group deals with the probabilistic aspect of quantum mechanics, which helps to calculate the chances of events occurring, while the second tests an aspect of the principle of superposition, which expresses the fact that quantum objects can behave like waves – throwing two stones into a pond results in a wave pattern that is the sum of two waves, the DST added.
The collaborative work began with a discussion between RRI Prof. Urbasi Sinha and conference delegate Prof. Lorenzo Macconne from the University of Pavia, Italy, at the Quantum Frontiers and Fundamentals (QFF 2020) conference organized by RRI , said DST.
Over the next two years, Sinha and his postdoc explored the possibility of performing experiments on quantum computers with Macconne, an expert in quantum information theory.
“Using a quantum computer to perform tests of crucial quantum principles in research published as a quick release letter in the journal Physical Review Research has led to the emergence of an entirely new direction of research for the physics community that brings together diverse research disciplines under a unifying umbrella,” the statement read.
Since quantum computers are scalable quantum systems, DST said, this could provide a universal programmable setup for quantum experiments.
“A quantum circuit, which is like a low-level program for quantum computers, could be a Rosetta Stone that allows the translation of experiences from one physical system to another. As a corollary, the scientists also showed that quantum mechanics is true and that the tests can be used as a benchmark to assess the performance of a quantum computer,” DST said.
Sinha said their method provides a good way to create “well-defined benchmarks for quantum computers so that we know exactly how error-prone they are, using the very foundations of quantum theory as a benchmarking tool. “.