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- Document type:
- Buchbeitrag
- Author(s):
- Kraus, B.; Törmä, P.
- Title:
- Transition Phenomena in Networks of Quantum Systems
- Abstract:
- Home Quantum Communication, Computing, and Measurement 2 Chapter Transition Phenomena in Networks of Quantum Systems B. Kraus & P. Törmä Chapter 641 Accesses Abstract The advances in experimental manipulation and theoretical understanding of single quantum systems has fed the interest in quantum networks: quantum computers, quantum communication networks and multimode interferometers. According to statistical physics, a set of probabilistically behaving individual systems can exhibit critical behaviour when connected. In this paper we show that transition phenomena exist also in networks which behave probabilistically not because of finite temperature but due to their quantum nature1. We define a model which carries in its structure a formal analogy to the two-dimensional Ising-model. Such networks can be experimentally realized by various active (non-unitary) and passive (unitary) components. We give physical meaning to the transitions found. In the case of active components, such as amplifiers, the transition point coincides with the fundamental cloning limit given by quantum mechanics. We indicate how the transition phenomena could be observed, and discuss their significance and connection to quantum information related issues such as quantum computation and quantum cellular automata.
- Keywords:
- Transition Point Cellular Automaton Ising Model Quantum Computer Quantum Network
- Book title:
- Quantum Communication, Computing, and Measurement 2. Springer, Boston, MA. 2000-12
- Publisher:
- Kluwer Academic Publishers
- Year:
- 2000
- Quarter:
- 4. Quartal
- Year / month:
- 2000-01
- Month:
- Dec
- Pages:
- 347-352
- Print-ISBN:
- 0306463075
- Language:
- en
- DOI:
- doi:10.1007/0-306-47097-7_46
- WWW:
- https://link.springer.com/chapter/10.1007/0-306-47097-7_46
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