Colored collapse models from the non-interferometric perspective

  title={Colored collapse models from the non-interferometric perspective},
  author={Matteo Carlesso and Luca Ferialdi and Angelo Bassi},
  journal={The European Physical Journal D},
Abstract Models of spontaneous wave function collapse describe the quantum-to-classical transition by assuming a progressive breakdown of the superposition principle when the mass of the system increases, providing a well-defined phenomenology in terms of a non-linearly and stochastically modified Schrödinger equation, which can be tested experimentally. The most popular of such models is the continuous spontaneous localization (CSL) model: in its original version, the collapse is driven by a… 

Testing continuous spontaneous localization with Fermi liquids

Collapse models describe phenomenologically the quantum-to-classical transition by adding suitable nonlinear and stochastic terms to the Schrodinger equation, thus (slightly) modifying the dynamics

Collapse Models: Main Properties and the State of Art of the Experimental Tests

Collapse models represent one of the possible solutions to the measurement problem. These models modify the Schrodinger dynamics with nonlinear and stochastic terms, which guarantee the localization

Present status and future challenges of non-interferometric tests of collapse models

The superposition principle is the cornerstone of quantum mechanics, leading to a variety of genuinely quantum effects. Whether the principle applies also to macroscopic systems or, instead, there is

Minimum measurement time: lower bound on the frequency cutoff for collapse models

The CSL model predicts a progressive breakdown of the quantum superposition principle, with a noise randomly driving the state of the system towards a localized one, thus accounting for the emergence

Unitary unraveling for the dissipative continuous spontaneous localization model: Application to optomechanical experiments

The Continuous Spontaneous Localization (CSL) model strives to describe the quantum-to-classical transition from the viewpoint of collapse models. However, its original formulation suffers from a

Quantum Spectrometry for Arbitrary Noise.

The treatment is valid under the conditions that the environment is large and hot compared to the oscillator, and its temporal autocorrelation functions are symmetric with respect to time translation and reflection-criteria which it considers fairly minimal.

Opto-Mechanical Test of Collapse Models

This work reviews the recently proposed non-interferometric approach to the testing of collapse models, focusing on the opto-mechanical platform, and identifies the values of the parameters that characterize it.

Continuous spontaneous localization reduction rate for rigid bodies

The authors present a detailed assessment of continuous spontaneous localization (one of the best-known models for spontaneous wave-function collapse) collapse and diffusion rates for the

Room temperature test of the continuous spontaneous localization model using a levitated micro-oscillator

The Continuous Spontaneous Localization (CSL) model predicts a tiny break of energy conservation via a weak stochastic force acting on physical systems, which triggers the collapse of the wave

Search for Spontaneous Radiation from Wave Function Collapse in the Majorana Demonstrator.

This letter tests the continuous spontaneous localization (CSL) model, one of the mathematically well-motivated wavefunction collapse models aimed at solving the long-standing unresolved quantum mechanical measurement problem, and sets the most stringent upper limit to date for the white CSL model on the collapse rate.



Collapse models with non-white noises

We set up a general formalism for models of spontaneous wavefunction collapse with dynamics represented by a stochastic differential equation driven by general Gaussian noises, not necessarily white

Dissipative Continuous Spontaneous Localization (CSL) model

The dissipative version of the CSL model is presented, which guarantees a finite energy during the entire system’s evolution, thus making a crucial step toward a realistic energy-conserving collapse model.

Collapse models with non-white noises: II. Particle-density coupled noises

We continue the analysis of models of spontaneous wavefunction collapse with stochastic dynamics driven by non-white Gaussian noise. We specialize to a model in which a classical ‘noise’ field, with

On spontaneous photon emission in collapse models

We reanalyze the problem of spontaneous photon emission in collapse models. We show that the extra term found by Bassi and Dürr is present for non-white (colored) noise, but its coefficient is

Non-interferometric test of the continuous spontaneous localization model based on rotational optomechanics

The continuous spontaneous localization (CSL) model is the best known and studied among collapse models, which modify quantum mechanics and identify the fundamental reasons behind the unobservability

Testing spontaneous wave-function collapse models on classical mechanical oscillators.

It is shown that the heating effect of spontaneous wave-function collapse models implies an experimentally significant increment ΔT(sp) of equilibrium temperature in a mechanical oscillator, which is linear in the oscillator's relaxation time τ and independent of the mass.

Bounds on quantum collapse models from matter-wave interferometry: calculational details

We present a simple derivation of the interference pattern in matter-wave interferometry predicted by a class of quantum master equations. We apply the obtained formulae to the following collapse

Dissipative collapse models with nonwhite noises

We study the generalization of the QMUPL model which accounts both for memory and dissipative effects. This is the first model where both features are combined. After having derived the non-local

Proposal for a noninterferometric test of collapse models in optomechanical systems

The test of modifications to quantum mechanics aimed at identifying the fundamental reasons behind the unobservability of quantum mechanical superpositions at the macroscale is a crucial goal of