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Parity measurements versus dual-homodyne measurements in coherent-state Mach-Zehnder interferometry

TLDR
In this article, a coherent state Mach-Zehnder interferometer (MZI) with parity-based phase estimation was shown to achieve SNL scaling in a single measurement, albeit without superresolution.
Abstract
Previous studies [J. Opt. Soc. Am. B27, A170 (2010)JOBPDE0740-322410.1364/JOSAB.27.00A170; J. Appl. Phys.114, 193102 (2013)JAPIAU0021-897910.1063/1.4829016] have asserted that a coherent-state Mach–Zehnder interferometer (MZI) with parity-based phase estimation can achieve superresolution at the shot-noise limit (SNL). We show that these studies have ignored the need for repeated measurements in order to achieve root-mean-square accuracy at the SNL. Consequently, their superresolution claims need major revision. For comparison, we present the performance of a coherent-state MZI that uses dual-homodyne detection and show that it can achieve SNL scaling in a single measurement, albeit without superresolution.

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The Observation of Gravitational Waves from a Binary Black Hole Merger

TL;DR: The first direct detection of gravitational waves and the first observation of a binary black hole merger were reported in this paper, with a false alarm rate estimated to be less than 1 event per 203,000 years, equivalent to a significance greater than 5.1σ.
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High-speed time-domain balanced homodyne detector for nanosecond optical field applications

TL;DR: In this article, a high-speed time-domain shot-noise-limited balanced homodyne detector was proposed for the detection of the quantum states of nanosecond pulsed optical fields.
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Optimal Detection Scheme for Shot-Noise-Limited Phase Estimation in Passive Classical-Light Interferometry

TL;DR: In this article, the authors reexamine the simple, passive Mach-Zehnder interferometer by linearizing the phase estimation problem, for straightforward computation of an efficient estimator, which is then used to compare several detection schemes for two-and four-output interferometers.
References
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Journal ArticleDOI

Observation of Gravitational Waves from a Binary Black Hole Merger

B. P. Abbott, +1011 more
TL;DR: This is the first direct detection of gravitational waves and the first observation of a binary black hole merger, and these observations demonstrate the existence of binary stellar-mass black hole systems.
Journal Article

The Observation of Gravitational Waves from a Binary Black Hole Merger

TL;DR: The first direct detection of gravitational waves and the first observation of a binary black hole merger were reported in this paper, with a false alarm rate estimated to be less than 1 event per 203,000 years, equivalent to a significance greater than 5.1σ.
Journal ArticleDOI

Quantum Mechanical Noise in an Interferometer

TL;DR: In this article, the authors proposed a new technique, the squeezed-state technique, that allows one to decrease the photon-counting error while increasing the radiation pressure error, or vice versa.
Journal ArticleDOI

Quantum interferometric lithography: exploiting entanglement to beat the diffraction limit

TL;DR: It is shown how to write arbitrary 2D patterns by using the nonclassical photon-number states method, and a factor of N = 2 can be achieved easily with entangled photon pairs generated from optical parametric down-conversion.
Journal ArticleDOI

Quantum optical metrology – the lowdown on high-N00N states

TL;DR: A review of the recent theoretical and experimental advances in this exciting new field of quantum optical metrology, focusing on examples that exploit a particular two-mode entangled photon state, the High-N00N state, is given in this article.
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