Detector Correlations and Null Tests of the Coherent State Hypothesis
- URL: http://arxiv.org/abs/2508.03367v1
- Date: Tue, 05 Aug 2025 12:15:55 GMT
- Title: Detector Correlations and Null Tests of the Coherent State Hypothesis
- Authors: Sreenath K. Manikandan, Frank Wilczek,
- Abstract summary: We show that this allows simple null tests of the coherent state hypothesis, free of vacuum (quantum) noise.<n> Complementary aspects of the radiation field, it e.g., squeezing in number or phase, can be revealed through appropriate detection strategies.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We discuss the statistics of correlations between two resonant detectors. We show that this allows simple null tests of the coherent state hypothesis, free of vacuum (quantum) noise. Complementary aspects of the radiation field, {\it e.g.}, squeezing in number or phase, can be revealed through appropriate detection strategies.
Related papers
- Infinite-fold Quantum Advantage in Classical Correlation Sensing [1.534667887016089]
We find that when the average received energy per detector goes to zero, the ratio of the error exponents goes to infinity, indicating an infinite-fold quantum advantage.
arXiv Detail & Related papers (2025-03-21T15:36:51Z) - Interferometric detection of continuous-variable entanglement using two states [0.0]
We derive mode-operator-based witnesses for continuous-variable bipartite entanglement using the interference of two states.<n>We show how one can access higher moments of the mode operators, crucial for detecting entanglement of non-Gaussian states.
arXiv Detail & Related papers (2025-02-20T16:25:04Z) - Active Hypothesis Testing for Quantum Detection of Phase-Shift Keying Coherent States [21.270496914042997]
This paper explores the quantum detection of Phase-Shift Keying (PSK)-coded coherent states through the lens of active hypothesis testing.<n>With coherent state slicing, we formulate the problem as a controlled sensing task in which observation kernels have parameters shrinking with sample size.<n>Surprisingly, the exponent-optimal open-loop policy for binary PSK with high dark counts is not simply time-sharing.
arXiv Detail & Related papers (2025-01-27T17:09:01Z) - Correlated Noise Estimation with Quantum Sensor Networks [18.51122677780099]
We develop a theoretical framework to determine the limits of correlated (weak) noise estimation with quantum sensor networks.<n>We identify a sensing protocol, reminiscent of a many-body echo sequence, that achieves the fundamental limits of measurement sensitivity for a broad class of problems.
arXiv Detail & Related papers (2024-12-23T19:00:06Z) - Distributed Quantum Hypothesis Testing under Zero-rate Communication Constraints [14.29947046463964]
We study a distributed binary hypothesis testing problem to infer a bipartite quantum state shared between two remote parties.<n>We show that the Stein's exponent when one of the parties communicates classically at zero-rate is given by a multi-letter expression.<n>As a key tool for proving the converse direction of our results, we develop a quantum version of the blowing-up lemma.
arXiv Detail & Related papers (2024-10-11T16:03:10Z) - Testing the Coherent State Description of Radiation Fields [0.0]
We propose simple quantitative criteria, based on counting statistics in resonant harmonic detectors, that probe the quantum mechanical character of radiation fields.<n>They provide, in particular, practical means to test the null hypothesis that a given field is maximally classical'', accurately described by a coherent state.
arXiv Detail & Related papers (2024-09-30T15:11:32Z) - False vacuum decay and nucleation dynamics in neutral atom systems [0.14980193397844668]
We study nucleation dynamics in 1D antiferromagnetic neutral atom chains with Rydberg interactions.
We propose experimental protocols to prepare the required states and perform quenches on near-term neutral atom quantum simulators.
arXiv Detail & Related papers (2024-04-18T17:39:47Z) - Coherent interaction-free detection of noise [0.0]
We propose interaction-free measurements as a noise-detection technique.
We explore two conceptually different schemes: the coherent and the projective realizations.
We study the signature of noise correlations in the detector's signal.
arXiv Detail & Related papers (2023-12-28T18:24:13Z) - Causal Discovery via Conditional Independence Testing with Proxy Variables [35.3493980628004]
The presence of unobserved variables, such as the latent confounder, can introduce bias in conditional independence testing.
We propose a novel hypothesis-testing procedure that can effectively examine the existence of the causal relationship over continuous variables.
arXiv Detail & Related papers (2023-05-09T09:08:39Z) - Multipartite entanglement detection based on generalized state-dependent
entropic uncertainty relation for multiple measurements [15.907303576427644]
We present the generalized state-dependent entropic uncertainty relations for multiple measurement settings.
We give the experimentally accessible lower bounds on both bipartite and tripartite entanglements.
arXiv Detail & Related papers (2022-11-02T06:26:07Z) - Mid-infrared homodyne balanced detector for quantum light
characterization [52.77024349608834]
We present the characterization of a novel balanced homodyne detector operating in the mid-infrared.
We discuss the experimental results with a view to possible applications to quantum technologies, such as free-space quantum communication.
arXiv Detail & Related papers (2021-03-16T11:08:50Z) - Experimental study of decoherence of the two-mode squeezed vacuum state
via second harmonic generation [19.5474623165562]
We report a novel scheme on the study of decoherence of a two-mode squeezed vacuum state via its second harmonic generation signal.
Our scheme can directly extract the decoherence of the phase-sensitive quantum correlation $langle hatahatbrangle$ between two entangled modes.
This is an experimental study on the decoherence effect of a squeezed vacuum state, which has been rarely investigated.
arXiv Detail & Related papers (2020-12-22T05:38:24Z) - Nonlocality, steering and quantum state tomography in a single
experiment [1.8631700158180744]
We investigate whether paradigmatic measurements for quantum state tomography can be employed to certify quantum correlations.
This allows us to perform state tomography on entangled qutrits, a test of Einstein-Podolsky-Rosen steering and a Bell inequality test, all within a single experiment.
arXiv Detail & Related papers (2020-11-11T09:56:21Z)
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.