A comparison between quantum and classical noise radar sources

• URL: http://arxiv.org/abs/2008.12711v1
• Date: Fri, 28 Aug 2020 15:45:34 GMT
• Title: A comparison between quantum and classical noise radar sources
• Authors: Robert Jonsson, Roberto Di Candia, Martin Ankel, Anders Str\"om, G\"oran Johansson
• Abstract summary: We compare the performance of a quantum radar based on two-mode squeezed states with a classical radar system based on correlated thermal noise. With a constraint of equal number of photons $N_S$ transmitted to probe the environment, we find that the quantum setup exhibits an advantage with respect to its classical counterpart.
• Score: 0.07829352305480283
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We compare the performance of a quantum radar based on two-mode squeezed states with a classical radar system based on correlated thermal noise. With a constraint of equal number of photons $N_S$ transmitted to probe the environment, we find that the quantum setup exhibits an advantage with respect to its classical counterpart of $\sqrt{2}$ in the cross-mode correlations. Amplification of the signal and the idler is considered at different stages of the protocol, showing that no quantum advantage is achievable when a large-enough gain is applied, even when quantum-limited amplifiers are available. We also characterize the minimal type-II error probability decay, given a constraint on the type-I error probability, and find that the optimal decay rate of the type-II error probability in the quantum setup is $\ln(1+1/N_S)$ larger than the optimal classical setup, in the $N_S\ll1$ regime. In addition, we consider the Receiver Operating Characteristic (ROC) curves for the scenario when the idler and the received signal are measured separately, showing that no quantum advantage is present in this case. Our work characterizes the trade-off between quantum correlations and noise in quantum radar systems.

Related papers

• Quantum correlations enhanced in hybrid optomechanical system via phase tuning [0.0]
  This work presents a theoretical framework for enhancing quantum correlations in a hybrid double-cavity optomechanical system. We find that tuning the phase $phi$ is essential for maximizing photon-phonon entanglement.
  arXiv  Detail & Related papers  (2024-10-13T14:11:07Z)
• Heisenberg-Limited Quantum Lidar for Joint Range and Velocity Estimation [0.4604003661048266]
  We propose a quantum lidar protocol to jointly estimate the range and velocity of a target by illuminating it with a single beam of pulsed displaced squeezed light. We show that the mean-squared errors of both range and velocity estimations are inversely proportional to the squared number of signal photons, simultaneously attaining the Heisenberg limit.
  arXiv  Detail & Related papers  (2023-11-24T15:29:03Z)
• Continuous dynamical decoupling of optical $^{171}$Yb$^{+}$ qudits with radiofrequency fields [45.04975285107723]
  We experimentally achieve a gain in the efficiency of realizing quantum algorithms with qudits. Our results are a step towards the realization of qudit-based algorithms using trapped ions.
  arXiv  Detail & Related papers  (2023-05-10T11:52:12Z)
• Sequential Quantum Channel Discrimination [19.785872350085878]
  We consider the sequential quantum channel discrimination problem using adaptive and non-adaptive strategies. We show that both types of error probabilities decrease to zero exponentially fast. We conjecture that the achievable rate region is not larger than that achievable with POVMs.
  arXiv  Detail & Related papers  (2022-10-20T08:13:39Z)
• Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter [62.997667081978825]
  We introduce a low-overhead protocol to reverse this degradation. We present two trapped-ion schemes for the implementation of a non-unitary probabilistic filter against amplitude damping noise. This filter can be understood as a protocol for single-copy quasi-distillation.
  arXiv  Detail & Related papers  (2022-09-06T18:18:41Z)
• Efficient Bipartite Entanglement Detection Scheme with a Quantum Adversarial Solver [89.80359585967642]
  Proposal reformulates the bipartite entanglement detection as a two-player zero-sum game completed by parameterized quantum circuits. We experimentally implement our protocol on a linear optical network and exhibit its effectiveness to accomplish the bipartite entanglement detection for 5-qubit quantum pure states and 2-qubit quantum mixed states.
  arXiv  Detail & Related papers  (2022-03-15T09:46:45Z)
• Unimon qubit [42.83899285555746]
  Superconducting qubits are one of the most promising candidates to implement quantum computers. Here, we introduce and demonstrate a superconducting-qubit type, the unimon, which combines the desired properties of high non-linearity, full insensitivity to dc charge noise, insensitivity to flux noise, and a simple structure consisting only of a single Josephson junction in a resonator.
  arXiv  Detail & Related papers  (2022-03-11T12:57:43Z)
• Interactive Protocols for Classically-Verifiable Quantum Advantage [46.093185827838035]
  "Interactions" between a prover and a verifier can bridge the gap between verifiability and implementation. We demonstrate the first implementation of an interactive quantum advantage protocol, using an ion trap quantum computer.
  arXiv  Detail & Related papers  (2021-12-09T19:00:00Z)
• Comparison of the semiclassical and quantum optical field dynamics in a pulse-excited optical cavity with a finite number of quantum emitters [0.0]
  We study the spectral and temporal response of a set of $N$ quantum emitters embedded in a photonic cavity. Wigner functions of the light mode are calculated for different scenarios to analyze the quantum state of the light field.
  arXiv  Detail & Related papers  (2021-11-11T15:56:17Z)
• Hybrid no-signaling-quantum correlations [0.2085467441379275]
  We introduce and study an intermediate hybrid no-signaling quantum set of non-local correlations that we term $textbfHNSQ$ in the multi-party Bell scenario. Specifically, the set $textbfHNSQ$ is a super-quantum set of correlations derived from no-signaling assemblages. In contrast to the usual no-signaling correlations, the new set allows for simple security of (one-sided)-device-independent applications against super-quantum adversaries.
  arXiv  Detail & Related papers  (2021-07-14T17:40:42Z)
• Superposition of two-mode squeezed states for quantum information processing and quantum sensing [55.41644538483948]
  We investigate superpositions of two-mode squeezed states (TMSSs) TMSSs have potential applications to quantum information processing and quantum sensing.
  arXiv  Detail & Related papers  (2021-02-01T18:09:01Z)

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.