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Mathematical Foundations of Holonomic Quantum Computer [PDF]

open access: yes, 2000
We make a brief review of (optical) Holonomic Quantum Computer (or Computation) proposed by Zanardi and Rasetti (quant-ph/9904011) and Pachos and Chountasis (quant-ph/9912093), and give a mathematical reinforcement to their works.Comment: Latex file, 11 ...
Fujii, Kazuyuki
core   +3 more sources

Experimental Predictions for Norm-Conserving Spontaneous Collapse

open access: yesEntropy, 2023
Previous work has shown that nonlocal collapse in quantum mechanics can be described by a deterministic, non-unitary operator added to the standard Schrödinger equation.
D. W. Snoke, D. N. Maienshein
doaj   +1 more source

Quantum superpositions of ‘common-cause’ and ‘direct-cause’ causal structures

open access: yesNew Journal of Physics, 2017
The constraints arising for a general set of causal relations, both classically and quantumly, are still poorly understood. As a step in exploring this question, we consider a coherently controlled superposition of ‘direct-cause’ and ‘common-cause ...
Adrien Feix, Časlav Brukner
doaj   +1 more source

Summoning, No-Signalling and Relativistic Bit Commitments

open access: yesEntropy, 2019
Summoning is a task between two parties, Alice and Bob, with distributed networks of agents in space-time. Bob gives Alice a random quantum state, known to him but not her, at some point. She is required to return the state at some later point, belonging
Adrian Kent
doaj   +1 more source

QUANTUM THEOLOGY BEYOND COPENHAGEN: TAKING FUNDAMENTALISM LITERALLY

open access: yesZygon, 2023
Theological engagement with quantum physics has, to this day, been dominated by the Copenhagen interpretation. However, philosophers and physicists working in the “quantum foundations” field have largely abandoned the Copenhagen view on account of what ...
doaj   +2 more sources

Uncertainty Relation for Errors Focusing on General POVM Measurements with an Example of Two-State Quantum Systems

open access: yesEntropy, 2020
A novel uncertainty relation for errors of general quantum measurement is presented. The new relation, which is presented in geometric terms for maps representing measurement, is completely operational and can be related directly to tangible measurement ...
Jaeha Lee, Izumi Tsutsui
doaj   +1 more source

Measurement-Based Quantum Foundations [PDF]

open access: yesFoundations of Physics, 2010
8 pages, version to appear in Found ...
openaire   +2 more sources

"Space is blue and birds fly through it" [PDF]

open access: yes, 2017
Quantum mechanics is not about 'quantum states': it is about values of physical variables. I give a short fresh presentation and update on the $relational$ perspective on the theory, and a comment on its philosophical implications.Comment: Presented to ...
Rovelli, Carlo
core   +8 more sources

Contextuality under weak assumptions

open access: yesNew Journal of Physics, 2017
The presence of contextuality in quantum theory was first highlighted by Bell, Kochen and Specker, who discovered that for quantum systems of three or more dimensions, measurements could not be viewed as deterministically revealing pre-existing ...
Andrew W Simmons   +4 more
doaj   +1 more source

Local Scale Covariance and Its Radical Implications for Cosmology

open access: yesGalaxies, 2021
Local scale covariance posits that no privileged length scales should appear in the fundamental equations of local, Minkowskian physics—why should nature have scale, but not position preferences?—yet, they clearly do.
Yehonatan Knoll
doaj   +1 more source

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