The Parity Operator: applications in quantum metrology
- URL: http://arxiv.org/abs/2008.08658v1
- Date: Wed, 19 Aug 2020 20:17:04 GMT
- Title: The Parity Operator: applications in quantum metrology
- Authors: Richard J. Birrittella, Paul M. Alsing and Christopher C. Gerry
- Abstract summary: Parity was first introduced in the context of Ramsey spectroscopy as an alternative to atomic state detection.
It has been shown to be the optimal detection observable saturating the quantum Cram'er-Rao bound for path symmetric states.
We show how this may be of use in the construction of high-precision multi-atom atomic clocks.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In this paper, we review the use of parity as a detection observable in
quantum metrology as well as introduce some original findings with regards to
measurement resolution in Ramsey spectroscopy and quantum non-demolition (QND)
measures of atomic parity. Parity was first introduced in the context of Ramsey
spectroscopy as an alternative to atomic state detection. It was latter adapted
for use in quantum optical interferometry where it has been shown to be the
optimal detection observable saturating the quantum Cram\'{e}r-Rao bound for
path symmetric states. We include a brief review of the basics of phase
estimation and the connection between parity-based detection and the quantum
Fisher information as it applies to quantum optical interferometry. We also
discuss the efforts made in experimental methods of measuring photon-number
parity and close the paper with a discussion on the use of parity leading to
enhanced measurement resolution in multi-atom spectroscopy. We show how this
may be of use in the construction of high-precision multi-atom atomic clocks.
Related papers
- Pushing the Boundaries: Interferometric Mass Photometry at the Quantum Limit of Sensitivity [0.7864304771129751]
In comparison to the conventional confocal interferometric scattering (iSCAT) approach, our setup adds a second arm to form a Michelson interferometer.
We evaluate the quantum Cram'er-Rao bound (QCRB) for different quantum states, including single-mode coherent states, multi-frequency coherent states, and phase-averaged coherent states.
arXiv Detail & Related papers (2024-10-25T09:21:01Z) - Geometric Antibunching and Directional Shaping of Photon Anticorrelations [44.99833362998488]
We find a new mechanism for photon anticorrelation, termed as geometric antibunching.
This phenomenon is completely agnostic to the quantum state of the emitters.
arXiv Detail & Related papers (2024-10-23T14:29:15Z) - Universal quantum frequency comb measurements by spectral mode-matching [39.58317527488534]
We present the first general approach to make arbitrary, one-shot measurements of a multimode quantum optical source.
This approach uses spectral mode-matching, which can be understood as interferometry with a memory effect.
arXiv Detail & Related papers (2024-05-28T15:17:21Z) - Quantum plasmonic sensing by Hong-Ou-Mandel interferometry [0.0879626117219674]
A plasmonic beam splitter composed of a dual-Kretschmann configuration serves as a frustrated total internal reflection beamsplitter.
We propose a quantum plasmonic sensor using Hong-Ou-Mandel (HOM) interferometry that measures the refractive index of an analyte.
arXiv Detail & Related papers (2024-04-17T02:12:48Z) - Enhanced Entanglement in the Measurement-Altered Quantum Ising Chain [46.99825956909532]
Local quantum measurements do not simply disentangle degrees of freedom, but may actually strengthen the entanglement in the system.
This paper explores how a finite density of local measurement modifies a given state's entanglement structure.
arXiv Detail & Related papers (2023-10-04T09:51:00Z) - Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems.
Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z) - Photon emission correlation spectroscopy as an analytical tool for
quantum defects [0.0]
This tutorial presents a standardized framework for using photon emission correlation spectroscopy to study quantum emitters.
We highlight important nuances and best practices regarding the commonly-used $g(2)(tau=0)0.5$ test for single-photon emission.
We illustrate how this experimental technique can be paired with optical dynamics simulations to formulate an electronic model for unknown quantum emitters.
arXiv Detail & Related papers (2021-11-01T20:43:22Z) - Analysis of photon characteristics in anticorrelation of a
Hong-Ou-Mandel dip for on-demand quantum correlation control [0.0]
The Hong-Ou-Mandel (HOM) dip is the most important test tool for direct proof of entanglement between paired photons.
This study sheds light on deterministic quantum correlation control and opens the door to potential applications of on-demand quantum information science.
arXiv Detail & Related papers (2021-05-25T05:00:49Z) - Deterministic quantum correlation in an interferometric scheme [0.0]
In this paper, the fundamental principles of quantumness are investigated in an interferometric scheme for controllable quantum correlation.
In a Mach-Zehnder interferometer, the photonic de Broglie wavelength has also been studied for quantum sensing with an enhanced phase resolution overcoming the standard quantum limit.
arXiv Detail & Related papers (2020-12-17T04:12:49Z) - Quantum-Assisted Optical Interferometers: Instrument Requirements [37.89976990030855]
We propose that photons from two different sources could be interfered at two decoupled stations, requiring only a slow classical connection between them.
We show that this approach could allow high-precision measurements of the relative astrometry of the two sources, with a simple estimate giving angular resolution of $10 mu$as in a few hours' observation of two bright stars.
arXiv Detail & Related papers (2020-12-04T19:25:02Z) - Direct estimation of quantum coherence by collective measurements [54.97898890263183]
We introduce a collective measurement scheme for estimating the amount of coherence in quantum states.
Our scheme outperforms other estimation methods based on tomography or adaptive measurements.
We show that our method is accessible with today's technology by implementing it experimentally with photons.
arXiv Detail & Related papers (2020-01-06T03:50:42Z)
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.