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Predicting many properties of a quantum system from very few measurements

Nature Physics, 2020
Predicting the properties of complex, large-scale quantum systems is essential for developing quantum technologies. We present an efficient method for constructing an approximate classical description of a quantum state using very few measurements of the
Hsin-Yuan Huang, R. Kueng, J. Preskill
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Turning a molecule into a coherent two-level quantum system

Nature Physics, 2018
The use of molecules in quantum optical applications has been hampered by incoherent internal vibrations and other phononic interactions with their environment.
Daqing Wang   +7 more
semanticscholar   +1 more source

QUANTUM SYSTEM IDENTIFICATION

International Journal of Quantum Information, 2005
The joint measurement approach has been shown to detect more information in quantum system. In this paper, we propose a quantum identification algorithm based on the joint quantum measurement. Through this, we can collectively compare an unknown quantum composite system with those in the database.
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Systems of Quantum Logic

Studia Logica, 2012
The paper follows the study of lattice-valued logic LL and quantum logic QL, as introduced in [\textit{S. Titani}, Arch. Math. Logic 38, No. 6, 395--421 (1999; Zbl 0936.03048); in: Handbook of quantum logic and quantum structures. Quantum logic. Amsterdam: Elsevier/North-Holland. 661--702 (2009; Zbl 1273.03151)].
Titani, Satoko   +2 more
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CONTROL OF QUANTUM SYSTEMS

Mathematical Models and Methods in Applied Sciences, 1999
We propose a new control method for systems whose evolution is described by Schrödinger's equation (quantum dynamics). The goal of the control is to induce modifications of observable quantities — with possible effects at mesoscopic or macroscopic levels — by modifying the potential at the microscopic level.
Pérez, R. B.   +2 more
openaire   +1 more source

Probing many-body dynamics on a 51-atom quantum simulator

Nature, 2017
Controllable, coherent many-body systems can provide insights into the fundamental properties of quantum matter, enable the realization of new quantum phases and could ultimately lead to computational systems that outperform existing computers based on ...
H. Bernien   +11 more
semanticscholar   +1 more source

Continuous Quantum Systems. I

1997
Quantum spin systems give a relatively simple explanation of the most important magnetic phenomena. In Section 6.2.2 we demonstrated that the Ising model exhibits ferromagnetic behavior if the interparticle forces favor spin alignment and antiferromagnetic behavior if it is energetically more favorable to have anti-parallel neighboring spins.
Ola Bratteli, Derek W. Robinson
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