Macroscopic Quantum Test with Bulk Acoustic Wave Resonators

Schrinski, Björn; Yang, Yu; Lüpke, Uwe von; Bild, Marius; Chu, Yiwen; Hornberger, Klaus; Nimmrichter, Stefan; Fadel, Matteo

doi:10.1103/physrevlett.130.133604

Cited by 23 publications

(11 citation statements)

References 25 publications

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“…We note that the notions of matter, space, locality, etc., have already lost their tangible, classical meaning [43,83]. The classical description has already been ruled out on the microgram mass scale [84] and quasiparticles have been observed in classical systems [85]. The subject of scientific experimental research is thermodynamics in the complex plane, for example, where Lee-Yang zeros [86,87] and photon-photon thermodynamic processes under negative optical temperature conditions [88] have been experimentally observed.…”

Section: Discussionmentioning

confidence: 99%

Life as the Explanation of the Measurement Problem

Łukaszyk

2024

J. Phys.: Conf. Ser.

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This study argues that a biological cell, a dissipative structure, is the smallest agent capable of processing quantum information through its triangulated, holographic sphere of perception, where this mechanism has been extended by natural evolution to endo and exosemiosis in multicellular organisms and further to the language of Homo sapiens. Thus, life explains the measurement problem of quantum theory within the framework of the holographic principle, emergent gravity, and emergent dimensionality. Each Planck triangle on a black hole surface corresponds to a qubit in an equal superposition, attaining known bounds on the products of its energies and orthogonalization interval. Black holes generate entropy variation shells through the solid-angle correspondence. The entropic work introduces the bounds on the number of active Planck triangles dependent on the information capacity of the black hole generator. The velocity and dissipativity bounds and the bounds on the theoretical probabilities for active, energy-carrying Planck triangles were derived. In particular, this study shows that black holes, Turing machines, and viruses cannot assume the role of an observer. The entropy variation shells and black-body objects may hint at solutions to ball lightning and sonoluminescence unexplained physical spherical phenomena. “It is also possible that we learned that the principal problem is no longer the fight with the adversities of nature but the difficulty of understanding ourselves if we want to survive” [1].

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Section: Discussionmentioning

confidence: 99%

Life as the Explanation of the Measurement Problem

Łukaszyk

2024

J. Phys.: Conf. Ser.

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“…Our results show the generation of cat states in a microgram-mass solid-state mechanical mode using the tools of cQAD and pave the way toward using such systems for tests of wave function collapse models ( 32 ). These tests would benefit from larger-sized cat states, resonators with higher masses ( 33 ), and longer phonon lifetimes.…”

Section: Discussionmentioning

confidence: 78%

Schrödinger cat states of a 16-microgram mechanical oscillator

Bild

Fadel

Yang

et al. 2023

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According to quantum mechanics, a physical system can be in any linear superposition of its possible states. Although the validity of this principle is routinely validated for microscopic systems, it is still unclear why we do not observe macroscopic objects to be in superpositions of states that can be distinguished by some classical property. Here we demonstrate the preparation of a mechanical resonator in Schrödinger cat states of motion, where the ∼10 17 constituent atoms are in a superposition of two opposite-phase oscillations. We control the size and phase of the superpositions and investigate their decoherence dynamics. Our results offer the possibility of exploring the boundary between the quantum and classical worlds and may find applications in continuous-variable quantum information processing and metrology with mechanical resonators.

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“…Power changes hands somewhere in between but exactly how and at what scale is still unknown. A new experiment with an acoustic resonator demonstrates quantum superposition-the simultaneous occupation of two distinct states-in a collection of 10 16 atoms, weighing around 1 microgram [1]. The results push the boundary of "quantumness" in near-macroscopic objects, and further refinements could allow these resonators to surpass quantum tests with matter interferometers.…”

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confidence: 90%

“…An alternative way to observe superposition is with an acoustic Credit: B. Schrinski et al [1] resonator, which can be in two vibrational states at the same time. Matteo Fadel from the Swiss Federal Institute of Technology (ETH) in Zurich and his colleagues studied the behavior of a sapphire-crystal resonator that was driven by a superconducting qubit to vibrate in two separate modes.…”

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confidence: 99%