Information encoding in the spatial correlations of entangled twin beams
- URL: http://arxiv.org/abs/2211.13330v1
- Date: Wed, 23 Nov 2022 22:17:27 GMT
- Title: Information encoding in the spatial correlations of entangled twin beams
- Authors: Gaurav Nirala, Siva T. Pradyumna, Ashok Kumar, and Alberto M. Marino
- Abstract summary: We show that information can be encoded in the distribution of the spatial correlations of highly multi-spatial mode entangled bright twin beams.
The encoded information can be extracted by mapping the momenta distribution of the twin beams to a position distribution in the far field.
We anticipate that the ability to engineer the distribution of the spatial correlations will serve as a novel degree of freedom to encode information.
- Score: 1.6230648949593154
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The ability to use the temporal and spatial degrees of freedom of quantum
states of light to encode and transmit information is crucial for the
implementation of a robust and efficient quantum network. In particular, the
large dimensionality of the spatial degree of freedom promises to provide
significant enhancements; however, such promise has largely been unfulfilled as
the necessary level of control over the spatial degree of freedom to encode
information remains elusive. Here, we show that information can be encoded in
the distribution of the spatial correlations of highly multi-spatial mode
entangled bright twin beams. We take advantage of the dependence of the spatial
correlations on the angular spectrum of the pump required for four-wave mixing,
as dictated by phase matching. The encoded information can be extracted by
mapping the momenta distribution of the twin beams to a position distribution
in the far field and measuring the spatial cross-correlation of images acquired
with a high quantum efficiency electron multiplying charge coupled device. We
further show that the encoded information cannot be accessed through individual
beam measurements and that the temporal quantum correlations are not modified.
We anticipate that the ability to engineer the distribution of the spatial
correlations will serve as a novel degree of freedom to encode information and
hence provide a pathway for high capacity quantum information channels and
networks. In addition, a high degree of control over the spatial properties of
quantum states of light will enable real-world quantum-enhanced spatially
resolved sensing and imaging applications.
Related papers
- Hiding images in quantum correlations [0.0]
We demonstrate the shaping of spatial correlations between entangled photons in the form of arbitrary amplitude and phase objects.
We encode image information within the pair correlations, making it undetectable by conventional intensity measurements.
It enables the transmission of complex, high-dimensional information using quantum correlations of photons, which can be useful for developing quantum communication and imaging protocols.
arXiv Detail & Related papers (2024-03-08T09:11:07Z) - How to harness high-dimensional temporal entanglement, using limited
interferometry setups [62.997667081978825]
We develop the first complete analysis of high-dimensional entanglement in the polarization-time-domain.
We show how to efficiently certify relevant density matrix elements and security parameters for Quantum Key Distribution.
We propose a novel setup that can further enhance the noise resistance of free-space quantum communication.
arXiv Detail & Related papers (2023-08-08T17:44:43Z) - High-dimensional quantum correlation measurements with an adaptively
gated hybrid single-photon camera [58.720142291102135]
We propose an adaptively-gated hybrid intensified camera (HIC) that combines a high spatial resolution sensor and a high temporal resolution detector.
With a spatial resolution of nearly 9 megapixels and nanosecond temporal resolution, this system allows for the realization of previously infeasible quantum optics experiments.
arXiv Detail & Related papers (2023-05-25T16:59:27Z) - Tracking quantum coherence in polariton condensates with time-resolved
tomography [0.22766070234899094]
We harness non-Gaussian convolutions of highly singular Glauber-Sudarshan quasiprobabilities to dynamically monitor quantum coherence in polariton condensates.
We probe the systems's resourcefulness for quantum information processing up to the nanosecond regime.
In contrast to commonly applied phase-space functions, our distributions can be directly sampled from measured data.
arXiv Detail & Related papers (2022-09-15T08:22:58Z) - Quantum transport of high-dimensional spatial information with a
nonlinear detector [0.0]
We experimentally realise quantum transport of high-dimensional spatial information facilitated by a quantum channel with a single entangled pair and a nonlinear spatial mode detector.
We faithfully transfer information encoded into orbital angular momentum, Hermite-Gaussian and arbitrary spatial mode superpositions, without requiring knowledge of the state to be sent.
arXiv Detail & Related papers (2021-11-26T17:37:32Z) - Tracing Information Flow from Open Quantum Systems [52.77024349608834]
We use photons in a waveguide array to implement a quantum simulation of the coupling of a qubit with a low-dimensional discrete environment.
Using the trace distance between quantum states as a measure of information, we analyze different types of information transfer.
arXiv Detail & Related papers (2021-03-22T16:38:31Z) - Spatial entanglement engineering by pump shaping [1.0312968200748116]
We demonstrate tunable control of spatial correlations between photon pairs produced by spontaneous parametric down-conversion.
The results highlight fundamental aspects of spatial coherence and hold potential for the development of quantum technologies based on high-dimensional spatial entanglement.
arXiv Detail & Related papers (2021-03-03T10:57:35Z) - Continuous-time dynamics and error scaling of noisy highly-entangling
quantum circuits [58.720142291102135]
We simulate a noisy quantum Fourier transform processor with up to 21 qubits.
We take into account microscopic dissipative processes rather than relying on digital error models.
We show that depending on the dissipative mechanisms at play, the choice of input state has a strong impact on the performance of the quantum algorithm.
arXiv Detail & Related papers (2021-02-08T14:55:44Z) - Entanglement transfer, accumulation and retrieval via quantum-walk-based
qubit-qudit dynamics [50.591267188664666]
Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies.
We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism.
In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
arXiv Detail & Related papers (2020-10-14T14:33:34Z) - Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols.
Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes.
We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z)
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.