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Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial…

Quantum Physics · Physics 2025-08-22 N. Levi , O. Feldman , Y. Rosenzweig , D. Groswasser , A. Elgarat , M. Gal-Katizri , R. Folman

Creating macroscopic spatial quantum superposition with a nanoparticle has a multitude of applications, ranging from testing the foundations of quantum mechanics, matter-wave interferometer for detecting gravitational waves and probing the…

Quantum Physics · Physics 2025-07-02 Tian Zhou , Sougato Bose , Anupam Mazumdar

This study presents a mathematical model of the spatial and rotational motion of a nanodiamond in an inverted harmonic potential to create a macroscopic quantum spatial superposition. The model is based on the Stern-Gerlach Interferometer…

Quantum Physics · Physics 2026-03-03 Ryan Rizaldy , Tian Zhou , Run Zhou , Anupam Mazumdar

The rotation of a nanoparticle in a quantum system has many applications, from theory to experiments. This paper will treat nanoparticle rotational dynamics for spin-embedded nanorotors. We will model it as a rigid body that properly treats…

Quantum Physics · Physics 2025-05-28 Ryan Rizaldy , Tian Zhou , Sougato Bose , Anupam Mazumdar

Recently, there has been a proposal to test the quantum nature of gravity in the laboratory by witnessing the growth of entanglement between two masses in spatial quantum superpositions. The required superpositions can be created via…

Quantum Physics · Physics 2023-12-11 Lorenzo Braccini , Martine Schut , Alessio Serafini , Anupam Mazumdar , Sougato Bose

In this invited review in honor of 100 years since the Stern-Gerlach (SG) experiments, we describe a decade of SG interferometry on the atom chip. The SG effect has been a paradigm of quantum mechanics throughout the last century, but there…

We investigate a two-dimensional matter-wave interferometer where both spatial and rotational dynamics of a nanoparticle are intertwined in closing the one-loop interferometer in the Stern-Gerlach type setup. We consider the spin-contrast…

Quantum Physics · Physics 2026-03-09 Ryan Rizaldy , Shrestha Mishra , Anupam Mazumdar

Whether quantum physics is universally valid is an open question with far-reaching implications. Intense research is therefore invested into testing the quantum superposition principle with ever heavier and more complex objects. Here we…

Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial…

Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial…

Quantum Physics · Physics 2025-08-20 Maria Muretova , Yonathan Japha , Marko Toros , Ron Folman

Probing quantum mechanics, quantum aspects of general relativity along with the sensing and the constraining of classical gravity can all be enabled by unprecedented spatial sizes of superpositions of massive objects. In this paper, we show…

Quantum Physics · Physics 2022-05-13 Ryan J. Marshman , Anupam Mazumdar , Ron Folman , Sougato Bose

Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle, can test numerous fundamental ideas, including the spatial…

Recent experiments demonstrate all-electric spinning of levitated nanodiamonds with embedded nitrogen-vacancy spins. Here, we argue that such gyroscopically stabilized spin rotors offer a promising platform for probing and exploiting…

Quantum Physics · Physics 2026-03-24 Vanessa Wachter , Silvia Viola Kusminskiy , Gabriel Hétet , Benjamin A. Stickler

Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial…

There is no consensus among today's physicists about how to describe the gravitational interaction properly in a quantum framework. We propose in this paper an experimental test aimed at revealing the existence of a non-linear…

Quantum Physics · Physics 2023-03-08 Mohamed Hatifi , Thomas Durt

Originally conceived as a gedankenexperiment, an apparatus consisting of two Stern--Gerlach apparatuses joined in an inverted manner touched on the fundamental question of the reversibility of evolution in quantum mechanics. Theoretical…

Quantum Physics · Physics 2021-07-02 Mikołaj M. Paraniak , Berthold-Georg Englert

In this paper, we will show how finite-temperature corrections and spin-dependent/independent noise will affect the contrast in a matter-wave interferometer, especially with massive objects and large spatial superposition sizes. Typically,…

Quantum Physics · Physics 2025-07-02 Tian Zhou , Ryan Rizaldy , Martine Schut , Anupam Mazumdar

Sensitive and accurate rotation sensing is a critical requirement for applications such as inertial navigation [1], north-finding [2], geophysical analysis [3], and tests of general relativity [4]. One effective technique used for rotation…

Atomic Physics · Physics 2020-04-07 E. R. Moan , R. A. Horne , T. Arpornthip , Z. Luo , A. J. Fallon , S. J. Berl , C. A. Sackett

There is significant interest in potential experimental tests of macroscopic quantum effects, both to test potential modifications to quantum theory and to probe the quantum nature of gravity. A proposed platform with which to generate the…

Quantum Physics · Physics 2021-10-28 Benjamin D. Wood , Gavin W. Morley
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