Hyperentanglement-enhanced quantum illumination
- URL: http://arxiv.org/abs/2011.07741v4
- Date: Tue, 25 May 2021 07:01:04 GMT
- Title: Hyperentanglement-enhanced quantum illumination
- Authors: Ashwith Varadaraj Prabhu, Baladitya Suri, C.M. Chandrashekar
- Abstract summary: In quantum illumination, the signal mode of light, entangled with an idler mode, is dispatched towards a suspected object bathed in thermal noise.
We propose the use of probe state hyperentangled in two degrees of freedom to achieve a significant 12dB performance improvement in error probability.
- Score: 1.7396274240172125
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In quantum illumination, the signal mode of light, entangled with an idler
mode, is dispatched towards a suspected object bathed in thermal noise and the
returning mode, along with the stored idler mode, is measured to determine the
presence or absence of the object. In this process, entanglement is destroyed
but its benefits in the form of classical correlations and enlarged Hilbert
space survive. Here, we propose the use of probe state hyperentangled in two
degrees of freedom - polarization and frequency, to achieve a significant 12dB
performance improvement in error probability exponent over the best known
quantum illumination procedure in the low noise regime. We present a simple
receiver model using four optical parametric amplifiers (OPA) that exploits
hyperentanglement in the probe state to match the performance of the
feed-forward sum-frequency generator (FF-SFG) receiver in the high noise
regime. By replacing each OPA in the proposed model with a FF-SFG receiver,
further 3dB improvement in the performance of a lone FF-SFG receiver can be
seen.
Related papers
- Dynamic Control of Spontaneous Emission Using Magnetized InSb
Higher-Order-Mode Antennas [0.0]
We propose THz sub-wavelength antenna designs that tune the radiative decay rates of dipole emitters at their proximity.
The proposed designs include a spherical InSb antenna and a cylindrical Si-InSb hybrid antenna that demonstrate distinct behaviors.
These novel mechanisms are potentially promising for tunable THz single-photon sources in integrated quantum networks.
arXiv Detail & Related papers (2023-11-13T05:19:59Z) - Beating the standard quantum limit for binary phase-shift-keying
discrimination with a realistic hybrid feed-forward receiver [0.0]
We propose a hybrid feed-forward receiver (HFFRE) for the discrimination of binary phase-shift-keyed coherent states.
We investigate the performance of the proposed scheme, also addressing realistic scenarios in the presence of nonunit quantum detection efficiency, dark counts, and visibility reduction.
The present HFFRE outperforms the DFFRE in all conditions, beating the standard quantum limit in particular regimes.
arXiv Detail & Related papers (2023-08-08T09:25:43Z) - Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols.
We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
arXiv Detail & Related papers (2023-04-24T15:43:08Z) - Spectral Enhanced Rectangle Transformer for Hyperspectral Image
Denoising [64.11157141177208]
We propose a spectral enhanced rectangle Transformer to model the spatial and spectral correlation in hyperspectral images.
For the former, we exploit the rectangle self-attention horizontally and vertically to capture the non-local similarity in the spatial domain.
For the latter, we design a spectral enhancement module that is capable of extracting global underlying low-rank property of spatial-spectral cubes to suppress noise.
arXiv Detail & Related papers (2023-04-03T09:42:13Z) - Autonomous coherence protection of a two-level system in a fluctuating
environment [68.8204255655161]
We re-examine a scheme originally intended to remove the effects of static Doppler broadening from an ensemble of non-interacting two-level systems (qubits)
We demonstrate that this scheme is far more powerful and can also protect a single (or even an ensemble) qubit's energy levels from noise which depends on both time and space.
arXiv Detail & Related papers (2023-02-08T01:44:30Z) - Quantum emulation of the transient dynamics in the multistate
Landau-Zener model [50.591267188664666]
We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity.
Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
arXiv Detail & Related papers (2022-11-26T15:04:11Z) - Multi-squeezed state generation and universal bosonic control via a
driven quantum Rabi model [68.8204255655161]
Universal control over a bosonic degree of freedom is key in the quest for quantum-based technologies.
Here we consider a single ancillary two-level system, interacting with the bosonic mode of interest via a driven quantum Rabi model.
We show that it is sufficient to induce the deterministic realization of a large class of Gaussian and non-Gaussian gates, which in turn provide universal bosonic control.
arXiv Detail & Related papers (2022-09-16T14:18:53Z) - Transceiver designs to attain the entanglement assisted communications
capacity [1.6694381776724387]
Pre-shared entanglement can significantly boost communication rates in the high thermal noise and low-brightness transmitter regime.
We propose a pair of structured quantum transceiver designs that leverage continuous-variable pre-shared entanglement generated.
arXiv Detail & Related papers (2022-08-16T22:37:20Z) - Cycle-Interactive Generative Adversarial Network for Robust Unsupervised
Low-Light Enhancement [109.335317310485]
Cycle-Interactive Generative Adversarial Network (CIGAN) is capable of not only better transferring illumination distributions between low/normal-light images but also manipulating detailed signals.
In particular, the proposed low-light guided transformation feed-forwards the features of low-light images from the generator of enhancement GAN into the generator of degradation GAN.
arXiv Detail & Related papers (2022-07-03T06:37:46Z) - Quantum analysis of second-order effects in superconducting
travelling-wave parametric amplifiers [0.0]
We have performed a quantum mechanical analysis of travelling-wave parametric amplifiers (TWPAs)
We investigate the effect of impedance mismatch, the presence of upper idler modes, the presence of quantum and thermal noise, the generation of squeezed states, and the preservation of pre-squeezed states during amplification.
arXiv Detail & Related papers (2021-04-13T16:50:16Z) - Noise reduction in qubit readout with a two-mode squeezed interferometer [0.0]
We measure a transmon qubit/cavity system with an unbalanced two-mode squeezed light interferometer formed from two JPCs.
We have observed a 31% improvement in power Signal-to-Noise Ratio (SNR) of projective readout compared to that of coherent light readout in the same system.
tuning the interferometer to be as unprojective as possible was associated with an increase in the quantum efficiency of our readout relative to the optimum setting for projective measurement.
arXiv Detail & Related papers (2020-07-30T13:55:36Z)
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.