insider brief
- The researchers report that various extensions of quantum theory are considered non-physical when tested against the non-trivial communication complexity principle.
- The research team uses an array of nonlocal boxes, a theoretical device used to explain certain aspects of quantum entanglement and nonlocality, to symbolize the theoretical extension.
- Ultimately, scientists argue, this research could open the door to advances in quantum information science and deepen our understanding of the phenomenon of quantum entanglement.
Press release — Recent research titled Extending the known domain of non-local boxes to collapse communication complexity Published in physical review letter (PRL) discloses that various theoretical extensions of quantum theory are considered non-physical when tested against the non-trivial communication complexity principle. These extensions of quantum theory can be symbolized by an array of nonlocal boxes, a theoretical device used to explain certain aspects of quantum entanglement and nonlocality. The research was conducted by Anne Broadbent, full professor and research director in the Department of Mathematics and Statistics at the University of Ottawa, and Pierre Botteron, a doctoral candidate and visiting researcher at the University of Toulouse in France. Ta. Marc-Olivier Proulx of Ottawa is a graduate of the Master’s program in the Department of Physics at the University of Ottawa.
The principles of quantum mechanics have traditionally been the go-to framework for understanding particle behavior and quantum entanglement. but, Zirelson’s limit The concept of quantum physics, which deals with correlations between distant particles, and the limitations it imposes, have led scientists to question whether a broader theory is possible. This gave rise to the nonlocal box, a theoretical extension of quantum theory, as a means of exploring a more holistic picture of the universe. This study focuses on exploiting non-trivial communication complexity to evaluate the feasibility of non-local boxes.
“Our research deepens our understanding of the constraints and boundaries of quantum theory extensions and provides insight into the mysteries of quantum entanglement,” says Professor Broadbent.
Quantum entanglement is a fascinating phenomenon explained by quantum mechanics that has attracted considerable attention in the scientific community.of The 2022 Nobel Prize was awarded to Aspect, Krauser and Zeilinger. His groundbreaking experiment using entangled photons revealed the violation of the Bell inequality and was praised for pioneering quantum information science. Despite the power of quantum mechanics, the existence of the Zirelson limit raises the question whether a more comprehensive theory exists to accurately describe the natural world. This study aims to investigate nonlocal boxes as a potential generalization of quantum mechanics and to determine their physical feasibility.
Research began in 2018 marc olivier proulx‘master’s thesisThe research was conducted under the supervision of Professor Anne Broadbent of the University of Ottawa and co-supervised by the late Professor David Poulin of the University of Sherbrooke. Building on this work, Pierre Botteron, a PhD student under Professor Broadbent, collaborated with Proulx to further investigate the domain of nonlocal boxes and the nontrivial communication complexity postulate. The research involved theoretical analysis and rigorous mathematical modeling based on the established framework and principles of quantum mechanics.
“Our work shows that a number of theoretical generalizations in quantum theory, represented by various families of nonlocal boxes, can be considered nonphysical according to the nontrivial communication complexity postulate. “These discoveries expand our understanding of the limits faced in generalizing quantum mechanics and provide valuable insight into the nature of quantum entanglement,” Professor Broadbent explains.
Exploring nonlocal boxes as a generalization of quantum mechanics has deepened our understanding of the limits of quantum theory. By investigating the non-trivial complexity hypothesis of communication, scientists in Ottawa have discovered a wide range of generalizations that have been dismissed as non-physical. This research opens the door to advances in quantum information science and deepens our understanding of quantum entanglement phenomena.
