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Macroscopic superpositions require tremendous measurement devices [PDF]
Quantum, 2017 We consider fundamental limits on the detectable size of macroscopic quantum superpositions. We argue that a full quantum mechanical treatment of system plus measurement device is required, and that a (classical) reference frame for phase or direction ...
Michalis Skotiniotis +2 more
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Quantum-inspired superposition and nonseparable states of reconfigurable metasurfaces in classical systems [PDF]
Nature CommunicationsClassical and quantum bits serve as cornerstone in information science. As this field rapidly evolves, the interplay between the two continues to enrich and inspire each other.
Long Chen +7 more
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Quantum States of Fields for Quantum Split Sources [PDF]
Quantum, 2023 Field mediated entanglement experiments probe the quantum superposition of macroscopically distinct field configurations. We show that this phenomenon can be described by using a transparent quantum field theoretical formulation of electromagnetism and ...
Lin-Qing Chen +2 more
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Results in Physics, 2022 The resource theory of superposition is a generalization of coherence theory. A rigorous framework for quantifying superposition of linear independent states has been given by previous studies.
Hai-Bo Xing
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Preparation of Quantum Superposition Using Partial Negation
IEEE Access, 2022 The preparation of a quantum superposition is the key to the success of many quantum algorithms and quantum machine learning techniques. The preparation of an incomplete or a non-uniform quantum superposition with certain properties is a non-trivial task.
Sara Anwer +3 more
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Methods of constructing superposition measures
Results in Physics, 2023 The resource theory of quantum superposition is an extension of the quantum coherent theory, in which linear independence relaxes the requirement of orthogonality.
Jia-Lin Teng, Feng-Li Yan, Ting Gao
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Indefinite causal order enables perfect quantum communication with zero capacity channels
New Journal of Physics, 2021 Quantum mechanics is compatible with scenarios where the relative order between two events can be indefinite. Here we show that two independent instances of a noisy process can behave as a perfect quantum communication channel when used in a coherent ...
Giulio Chiribella +8 more
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Collapsing a perfect superposition to a chosen quantum state without measurement. [PDF]
PLoS ONE, 2014 Given a perfect superposition of [Formula: see text] states on a quantum system of [Formula: see text] qubits. We propose a fast quantum algorithm for collapsing the perfect superposition to a chosen quantum state [Formula: see text] without applying any
Ahmed Younes, Mahmoud Abdel-Aty
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Results in Physics, 2023 We investigate the entanglement robustness of an N-qubit W superposition state against particle loss with quantum Fisher information. In the noninteracting environment, the quantum Fisher information of reduced W superposition state is found same as it ...
Zhihong Ren, Yan Li
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Scientific Reports, 2021 Quantum entanglement is the quintessence of quantum information science governed by quantum superposition mostly limited to a microscopic regime. For practical applications, however, macroscopic entanglement has an essential benefit for quantum sensing ...
Byoung S. Ham
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