465 citations · 1.2k across the 46 of their papers we have counts for
47 papers
Evidencing Macroscopic Quantum Coherence using Confined Uniform Magnetic Field
Dipankar Home, Harsh Talwar, Nilaj Saha +2
A previously unexplored scheme is devised for creating and certifying coherent quantum superposition of distinctly separated states of a spin-tagged massive object passing through…
Technical Proposal for the Atom Interferometer CERN Experiment (AICE) Facility
Gianluigi Arduini, Nadja Augst, Mark G. Bason +79
We present the technical proposal for the Atom Interferometer CERN Experiment (AICE), a m vertical atom interferometer to be installed against the wall of the PX…
Maximizing Nonclassicality of Massive Objects via Quantum Zeno Effect
Debarshi Das, Pritam Roy, Marko Toroš +3
For testing quantum mechanics in the macroscopic domain, a major challenge is to devise effective means for enhancing the observable nonclassical signatures despite the ubiquitous…
How to Test Bell Nonlocality for Gravity?
Debarshi Das, Mir Alimuddin, Simon Storz +2
We propose an experiment to test Bell nonlocality, a genuine nonclassicality, for the gravitational field. Two masses with embedded entangled spins (e.g., two diamonds with their N…
Graviton-mediated entanglement due to light bending from a quantum rotor
Dripto Biswas, Sougato Bose, Anupam Mazumdar +1
One of the key tests of the quantum nature of gravity is to test whether the virtual mediator of gravity between matter and photon gives rise to the quantum light-bending phenomeno…
Precision gravimetry via harnessing interaction-induced resonances in optical lattices
Hassan Manshouri, Moslem Zarei, Mehdi Abdi +3
By confining a Bose-Einstein condensate in a vertical lattice subjected to a gravitational potential, we analyze the quantum Fisher information to determine its scaling with respec…
Witnessing entanglement between photon and matter due to graviton exchange
Arijit Dutta, Marko Toroš, Sougato Bose +1
The paper presents a scheme to detect entanglement arising from the quantum nature of gravity between a spin qubit and photons, using Stokes parameters. One of the crucial tests of…
Effective Repulsive Action of Gravitational Quantum Superpositions Under Postselection
Sougato Bose, Lev Vaidman
A classic feature of gravity is that it is an attractive force. If a source mass is prepared in a localized (classical- like) state, it will cause another probe mass to move toward…
Mass-Independent Gravitationally Induced Entanglement
Lorenzo Braccini, Alessio Serafini, Sougato Bose
We analytically solve the entangling quantum dynamics of two interacting Stern-Gerlach Interferometers~(SGI). Each SGI exploits an operator-valued force applied by a qubit to creat…
Random acceleration noise on Stern-Gerlach Interferometry in a Harmonic Trap
Sneha Narasimha Moorthy, Andrew Geraci, Sougato Bose +1
We analyze decoherence in a one-loop Stern--Gerlach--type matter-wave interferometer for a massive nanoparticle embedded with a nitrogen vacancy (NV)-centered nanodiamond evolving…
Magnetic levitation and spatial superposition of a nanodiamond with a current-carrying chip
Qian Xiang, Shafaq Gulzar Elahi, Andrew Geraci +2
We propose a current-carrying-chip scheme for generating spatial quantum superpositions using a levitating nanodiamond with a built-in nitrogen-vacancy (NV) centre defect. Our setu…
How "Quantum" is your Quantum Computer? Macrorealism-based Benchmarking via Mid-Circuit Parity Measurements
Ben Zindorf, Lorenzo Braccini, Debarshi Das +1
To perform meaningful computations, Quantum Computers (QCs) must scale to macroscopic levels - i.e., to a large number of qubits - an objective pursued by most quantum companies. H…
Nonclassicality of a Macroscopic Qubit-Ensemble via Parity Measurement Induced Disturbance
Lorenzo Braccini, Debarshi Das, Ben Zindorf +3
We propose an experimental scheme to test the nonclassicality of a macroscopic ensemble of qubits, through the violation of the classical notion of macrorealism (MR) via the fundam…
Superpositions of Quantum Gaussian Processes
Lorenzo Braccini, Sougato Bose, Alessio Serafini
We generalise the Gaussian formalism of Continuous Variable (CV) systems to describe their entanglement with Discrete Variable (DV) systems, leading to superpositions of CV Gaussia…
Logarithmic lightcones in the multiparticle Anderson model with sparse interactions
Daniele Toniolo, Sougato Bose
We prove that the dynamics of the one-dimensional model with random magnetic field perturbed by a sparse set of terms with a large coupling constant gives rise t…
A Spin-Based Pathway to Testing the Quantum Nature of Gravity
Sougato Bose, Anupam Mazumdar, Roger Penrose +52
A key open problem in physics is the correct way to combine gravity (described by general relativity) with everything else (described by quantum mechanics). This problem suggests t…
Destructive Interference of Inertial Noise in Matter-wave Interferometry
Meng-Zhi Wu, Marko Toroš, Sougato Bose +1
Matter-wave interferometry is highly susceptible to inertial acceleration noises arising from the vibration of the experimental apparatus. There are various methods for noise suppr…
Rotational stability in nanorotor and spin contrast in one-loop interferometry in the Stern-Gerlach setup
Ryan Rizaldy, Tian Zhou, Sougato Bose +1
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 nanor…
Diamagnetic microchip traps for levitated nanoparticle entanglement experiments
Shafaq Gulzar Elahi, Martine Schut, Andrew Dana +4
The Quantum Gravity Mediated Entanglement (QGEM) protocol offers a novel method to probe the quantumness of gravitational interactions at non-relativistic scales. This protocol lev…
Decoherence rate expression due to air molecule scattering in spatial qubits
Martine Schut, Patrick Andriolo, Marko Toroš +2
We provide a solution for decoherence in spatial superpositions due to scattering/collision with air molecules. This result reproduces the short- and long-wavelength limits known i…
Exponential Expansion of Massive Schrödinger Cats for Sensing and Entanglement
Lorenzo Braccini, Alessio Serafini, Sougato Bose
Schrödinger cat states of levitated masses have several applications in sensing and, offer an avenue to explore the fundamental nature -- classical vs nonclassical -- of gravity, e…
Gyroscopic stability for nanoparticles in Stern-Gerlach Interferometry and spin contrast
Tian Zhou, Sougato Bose, Anupam Mazumdar
Creating macroscopic spatial quantum superposition with a nanoparticle has a multitude of applications, ranging from testing the foundations of quantum mechanics, matter-wave inter…
Relativistic Effects on Entangled Single-Electron Traps
Marko Toroš, Patrick Andriolo, Martine Schut +2
The manipulation of individual charged particles has been deeply explored in physics's theoretical and experimental domains during the past decades. It is the pillar of several exi…
Relativistic Dips in Entangling Power of Gravity
Marko Toroš, Martine Schut, Patrick Andriolo +2
The salient feature of both classical and quantum gravity is its universal and attractive character. However, less is known about the behaviour and build-up of quantum correlations…