Collapse dynamics and Hilbert-space stochastic processes
- URL: http://arxiv.org/abs/2112.14580v1
- Date: Wed, 29 Dec 2021 14:38:20 GMT
- Title: Collapse dynamics and Hilbert-space stochastic processes
- Authors: Daniele Bajoni and Oreste Nicrosini and Alberto Rimini and Simone
Rodini
- Abstract summary: We study the dependence of collapse times on the physical features of the superposition generated.
We find that collapse dynamics is sensitive to the number of detectors and the physical properties of the photon-detector quantum states superposition.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Spontaneous collapse models of state vector reduction represent a possible
solution to the quantum measurement problem. In the present paper we focus our
attention on the Ghirardi-Rimini-Weber (GRW) theory and the corresponding
continuous localisation models in the form of a Brownian-driven motion in
Hilbert space. We consider experimental setups in which a single photon hits a
beam splitter and is subsequently detected by photon detector(s), generating a
superposition of photon-detector quantum states. Through a numerical approach
we study the dependence of collapse times on the physical features of the
superposition generated, including also the effect of a finite reaction time of
the measuring apparatus. We find that collapse dynamics is sensitive to the
number of detectors and the physical properties of the photon-detector quantum
states superposition.
Related papers
- Floquet interferometry of a dressed semiconductor quantum dot [0.7852714805965528]
We demonstrate state dressing in a semiconductor quantum dot tunnel-coupled to a charge reservoir.
We develop a theory based on the quantum dynamics of the Floquet ladder.
We show how the technique finds applications in the accurate electrostatic characterisation of semiconductor quantum dots.
arXiv Detail & Related papers (2024-07-19T12:20:30Z) - Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip [78.1768579844556]
We show that engineered loss, using an auxiliary waveguide, allows one to invert the spatial statistics from bunching to antibunching.
We study the photon statistics within the loss-emulating channel and observe photon coincidences, which may provide insights into the design of quantum photonic integrated chips.
arXiv Detail & Related papers (2024-04-09T06:45:46Z) - Band Gap Engineering and Controlling Transport Properties of Single
Photons in Periodic and Disordered Jaynes-Cummings Arrays [0.0]
We study the single photon transport properties in periodic and position-disordered Jaynes-Cummings arrays.
In the disordered case, we find that the single photon transmission curves show the disappearance of band formation.
The results of this work may find application in the study of quantum many-body effects in the optical domain.
arXiv Detail & Related papers (2024-01-26T22:32:21Z) - The quantum state of light in collective spontaneous emission [0.0]
Collective spontaneous emission occurs when multiple quantum emitters decay into common radiation modes.
We unveil under what conditions the quantum correlations are not lost during the emission but are instead transferred to the output light.
Our findings suggest new paths for creating and manipulating multi-photon quantum light for bosonic codes in continuous-variable-based quantum computation, communications, and sensing.
arXiv Detail & Related papers (2023-06-20T07:31:19Z) - Entanglement of annihilation photons [141.5628276096321]
We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest.
Despite numerous measurements, there is still no experimental proof of the entanglement of photons.
arXiv Detail & Related papers (2022-10-14T08:21:55Z) - Correlated steady states and Raman lasing in continuously pumped and
probed atomic ensembles [68.8204255655161]
We consider an ensemble of Alkali atoms that are continuously optically pumped and probed.
Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state.
We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
arXiv Detail & Related papers (2022-05-10T06:54:54Z) - Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators.
We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure.
The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
arXiv Detail & Related papers (2021-05-27T18:00:02Z) - Quantum particle across Grushin singularity [77.34726150561087]
We study the phenomenon of transmission across the singularity that separates the two half-cylinders.
All the local realisations of the free (Laplace-Beltrami) quantum Hamiltonian are examined as non-equivalent protocols of transmission/reflection.
This allows to comprehend the distinguished status of the so-called bridging' transmission protocol previously identified in the literature.
arXiv Detail & Related papers (2020-11-27T12:53:23Z) - Topological photon pairs in a superconducting quantum metamaterial [44.62475518267084]
We use an array of superconducting qubits to engineer a nontrivial quantum metamaterial.
By performing microwave spectroscopy of the fabricated array, we experimentally observe the spectrum of elementary excitations.
We find not only the single-photon topological states but also the bands of exotic bound photon pairs arising due to the inherent anharmonicity of qubits.
arXiv Detail & Related papers (2020-06-23T07:04:27Z) - Theory of waveguide-QED with moving emitters [68.8204255655161]
We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace.
We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
arXiv Detail & Related papers (2020-03-20T12:14:10Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.