Imperfect photon detection in quantum illumination
- URL: http://arxiv.org/abs/2308.02343v1
- Date: Fri, 4 Aug 2023 14:18:06 GMT
- Title: Imperfect photon detection in quantum illumination
- Authors: F. Kronowetter, M. W\"urth, W. Utschick, R. Gross, K. G. Fedorov
- Abstract summary: In quantum illumination, various detection schemes have been proposed for harnessing remaining quantum correlations of the entanglement-based resource state.
We investigate the performance of this scheme for realistic detection parameters in terms of detection efficiency, dark count probability, and photon number resolution.
We find that the requirements for photon number resolution in the two mixer outputs are highly asymmetric due to different associated photon number expectation values.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In quantum illumination, various detection schemes have been proposed for
harnessing remaining quantum correlations of the entanglement-based resource
state. To this date, the only successful implementation in the microwave domain
relies on a specific mixing operation of the respective return and idler modes,
followed by single-photon counting in one of the two mixer outputs. We
investigate the performance of this scheme for realistic detection parameters
in terms of detection efficiency, dark count probability, and photon number
resolution. Furthermore, we take into account the second mixer output and
investigate the advantage of correlated photon counting (CPC) for a varying
thermal background and optimum post-processing weighting in CPC. We find that
the requirements for photon number resolution in the two mixer outputs are
highly asymmetric due to different associated photon number expectation values.
Related papers
- Developing a practical model for noise in entangled photon detection [0.22057828706896188]
We develop a comprehensive model for the effective two-photon density matrix produced by a parametric source of entangled photon pairs.
We derive the probability of obtaining a single coincidence assuming Poisson-distributed photon pairs, non-unit detection efficiency, and dark counts.
Our work provides a valuable tool for the quantitative design of two-photon experiments under realistic nonidealities.
arXiv Detail & Related papers (2025-01-02T22:06:12Z) - Sensing Based on Quantum Correlation of Photons in the Weak Nonlinear Regime [14.121716788061336]
Quantum correlation of photons based on quantum interference has been extensively studied for realizing single-photon sources in weak nonlinear regime.
We propose schemes to realize sensitive sensing by the quantum correlation of photons based on quantum interference.
arXiv Detail & Related papers (2024-11-28T13:39:25Z) - 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) - Importance sampling for stochastic quantum simulations [68.8204255655161]
We introduce the qDrift protocol, which builds random product formulas by sampling from the Hamiltonian according to the coefficients.
We show that the simulation cost can be reduced while achieving the same accuracy, by considering the individual simulation cost during the sampling stage.
Results are confirmed by numerical simulations performed on a lattice nuclear effective field theory.
arXiv Detail & Related papers (2022-12-12T15:06:32Z) - On-chip quantum information processing with distinguishable photons [55.41644538483948]
Multi-photon interference is at the heart of photonic quantum technologies.
Here, we experimentally demonstrate that detection can be implemented with a temporal resolution sufficient to interfere photons detuned on the scales necessary for cavity-based integrated photon sources.
We show how time-resolved detection of non-ideal photons can be used to improve the fidelity of an entangling operation and to mitigate the reduction of computational complexity in boson sampling experiments.
arXiv Detail & Related papers (2022-10-14T18:16:49Z) - Quantifying n-photon indistinguishability with a cyclic integrated
interferometer [40.24757332810004]
We report on a universal method to measure the genuine indistinguishability of n-photons.
Our approach relies on a low-depth cyclic multiport interferometer with N = 2n modes.
We experimentally demonstrate this technique for a 8-mode integrated interferometer fabricated using femtosecond laser micromachining.
arXiv Detail & Related papers (2022-01-31T16:30:52Z) - Two-photon resonance fluorescence of two interacting non-identical
quantum emitters [77.34726150561087]
We study a system of two interacting, non-indentical quantum emitters driven by a coherent field.
We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters.
This can be exploited for applications such as superresolution imaging of point-like sources.
arXiv Detail & Related papers (2021-06-04T16:13:01Z) - A positive operator-valued measure for two-photon detection via
sum-frequency generation [0.0]
We show that a single-photon projective measurement in the temporal-mode basis of the output photon of a two-photon SFG process effects a generalized measurement on the input two-photon state.
We analyze the properties of the two-photon POVM that are relevant for quantum protocols exploiting two-photon states and measurements.
arXiv Detail & Related papers (2021-01-16T03:34:53Z) - Effect of source statistics on utilizing photon entanglement in quantum
key distribution [0.0]
We show that secure key rate of down-converted photon pairs is limited to 0.029 bits per detection window due to intrinsic multiphoton contributions.
We find a bound for secure key rate extracted from SPDC sources and make a comparison with perfectly single-pair quantum states.
arXiv Detail & Related papers (2020-08-17T17:47:54Z) - Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
Integrated photonics is a robust platform for quantum information processing.
Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive.
Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
arXiv Detail & Related papers (2020-05-19T16:46:44Z)
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.