Emergent quantum mechanics explores the possibility of an ontology for quantum mechanics. The resurgence of interest in "deeper-level" theories for quantum phenomena challenges the standard, textbook ...interpretation. The book presents expert views that critically evaluate the significance—for 21st century physics—of ontological quantum mechanics, an approach that David Bohm helped pioneer. The possibility of a deterministic quantum theory was first introduced with the original de Broglie-Bohm theory, which has also been developed as Bohmian mechanics. The wide range of perspectives that were contributed to this book on the occasion of David Bohm’s centennial celebration provide ample evidence for the physical consistency of ontological quantum mechanics. The book addresses deeper-level questions such as the following: Is reality intrinsically random or fundamentally interconnected? Is the universe local or nonlocal? Might a radically new conception of reality include a form of quantum causality or quantum ontology? What is the role of the experimenter agent? As the book demonstrates, the advancement of ‘quantum ontology’—as a scientific concept—marks a clear break with classical reality. The search for quantum reality entails unconventional causal structures and non-classical ontology, which can be fully consistent with the known record of quantum observations in the laboratory.
In the above article <xref ref-type="bibr" rid="ref1">1 , we add some missing citations in the Notations and Preliminaries section. The new Notations and Preliminaries section is as follows.
The cover image is based on the Software Focus AQME: Automated quantum mechanical environments for researchers and educators by Juan V. Alegre‐Requena et al., https://doi.org/10.1002/wcms.1663.
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4.
Wenjing Hong
Angewandte Chemie (International ed.),
October 5, 2020, Volume:
59, Issue:
41
Journal Article
Peer reviewed
“The most significant scientific advance of the last 100 years has been quantum mechanics … What I look for first in a publication is something unexpected and counterintuitive …” Find out more about ...Wenjing Hong in his Author Profile.
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In the version of this News & Views originally published, the link for ref. 7 was incorrectly given as https://arxiv.org/abs/1604.07422; it should have been https://scirate.com/arxiv/1604.07422. This ...has now been corrected.
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Lessons from supersymmetric black holes Messamah, I; Van Den Bleeken, D
Journal of physics. Conference series,
01/2021, Volume:
1766, Issue:
1
Journal Article
Peer reviewed
Open access
Abstract
This paper studies the D4-D0 system in light of black hole puzzles. The properties of its microstates, that live in the associated quiver quantum mechanics 1, 2, are discussed. It is shown ...that the pure Higgs states of these quivers satisfy the needed properties to be (part of) the microstates of a single centered D4-D0 black hole.
The ability to engineer parallel, programmable operations between desired qubits within a quantum processor is key for building scalable quantum information systems
. In most state-of-the-art ...approaches, qubits interact locally, constrained by the connectivity associated with their fixed spatial layout. Here we demonstrate a quantum processor with dynamic, non-local connectivity, in which entangled qubits are coherently transported in a highly parallel manner across two spatial dimensions, between layers of single- and two-qubit operations. Our approach makes use of neutral atom arrays trapped and transported by optical tweezers; hyperfine states are used for robust quantum information storage, and excitation into Rydberg states is used for entanglement generation
. We use this architecture to realize programmable generation of entangled graph states, such as cluster states and a seven-qubit Steane code state
. Furthermore, we shuttle entangled ancilla arrays to realize a surface code state with thirteen data and six ancillary qubits
and a toric code state on a torus with sixteen data and eight ancillary qubits
. Finally, we use this architecture to realize a hybrid analogue-digital evolution
and use it for measuring entanglement entropy in quantum simulations
, experimentally observing non-monotonic entanglement dynamics associated with quantum many-body scars
. Realizing a long-standing goal, these results provide a route towards scalable quantum processing and enable applications ranging from simulation to metrology.
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We construct a time-dependent double well potential as an exact spectral equivalent to the explicitly time-dependent negative quartic oscillator with a time-dependent mass term. Defining the unstable ...anharmonic oscillator Hamiltonian on a contour in the lower-half complex plane, the resulting time-dependent non-Hermitian Hamiltonian is first mapped by an exact solution of the time-dependent Dyson equation to a time-dependent Hermitian Hamiltonian defined on the real axis. When unitary transformed, scaled and Fourier transformed we obtain a time-dependent double well potential bounded from below. All transformations are carried out non-perturbatively so that all Hamiltonians in this process are spectrally exactly equivalent in the sense that they have identical instantaneous energy eigenvalue spectra.
•Time-dependent spectrally equivalent potentials are constructed.•Double wells are equivalent to time-dependent negative quartic oscillators.•We provide new analytical solutions to the time-dependent Dyson equation.
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