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Macroscopic Superpositions as Quantum Ground States [PDF]
Physical Review Letters, 2017 We study the question of what kind of a macroscopic superposition can(not) naturally exist as a ground state of some gapped local many-body Hamiltonian. We derive an upper bound on the energy gap of an arbitrary physical Hamiltonian provided that its ground state is a superposition of two well-distinguishable macroscopic "semi-classical" states.
Dakic, Borivoje, Radonjic, Milan
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Insolubility from No-Signalling [PDF]
, 2013 This paper improves on the result in my http://philsci-archive.pitt.edu/9121/, showing that within the framework of the unitary Schroedinger equation it is impossible to reproduce the phenomenological description of quantum mechanical measurements (in ...
Bacciagaluppi, Guido
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Quantum superposition principle and geometry [PDF]
General Relativity and Gravitation, 2006 10 pages, no figures. References added. V3 discussion expanded and new results added, 14 pages. Dedicated to Michael P.
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Quantum Information in Geometric Quantum Mechanics [PDF]
, 2011 A fundamental starting point in quantum information theory is the consideration of the von Neumann entropy and its generalization to relative quantum entropies.
Volkert, Georg Friedrich
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Gravitational quantum switch on a superposition of spherical shells [PDF]
QuantumIn the absence of a complete theory of quantum gravity, phenomenological models built upon minimal assumptions have been explored for the analysis of possible quantum effects in gravitational systems.
Natália S. Móller +2 more
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, 2023 <p>CUDA Quantum is now available <a href="https://pypi.org/project/cuda-quantum/">on PyPI</a>! For the initial PyPI release, the NVIDIA multi-gpu and tensornet backends are not yet included. Check out our Docker images <a href="https:
The CUDA Quantum development team
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Zero-error Coding Method Based on Quantum Five-symbol Confusion Channel Model [PDF]
Jisuanji gongcheng, 2018 In view of the lack of effective coding schemes for quantum zero-error channel,based on the characteristics of quantum five-symbol confusion channel model and the theory of matrix theory,a coding method of five-symbol confusion channel combining quantum ...
LI Jingya,YU Wenbin,LIU Wenjie,WANG Jinwei
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Quantum superpositions cannot be epistemic [PDF]
Quantum Studies: Mathematics and Foundations, 2015 Quantum superposition states are behind many of the curious phenomena exhibited by quantum systems, including Bell non-locality, quantum interference, quantum computational speed-up, and the measurement problem. At the same time, many qualitative properties of quantum superpositions can also be observed in classical probability distributions leading to
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In situ upgrade of quantum simulators to universal computers [PDF]
, 2018 Quantum simulators, machines that can replicate the dynamics of quantum systems, are being built as useful devices and are seen as a stepping stone to universal quantum computers.
Benjamin Dive +7 more
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Steering-enhanced quantum metrology using superpositions of noisy phase shifts
Physical Review Research, 2023 Quantum steering is an important correlation in quantum information theory. A recent work [Nat. Commun. 12, 2410 (2021)NCAOBW2041-172310.1038/s41467-021-22353-3] showed that quantum steering is also useful for quantum metrology.
Kuan-Yi Lee +5 more
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