Copy the page URI to the clipboard
MacCormick, Calum; Bergamini, Silvia; Mansell, Chris; Cable, Hugo and Modi, Kavan
(2016).
DOI: https://doi.org/10.1103/PhysRevA.93.023805
Abstract
We analyze the operation of a sensor based on atom interferometry, which can achieve supraclassical sensitivity by exploiting quantum correlations in mixed states of many qubits. The interferometer is based on quantum gates which use coherently controlled Rydberg interactions between a single atom (which acts as a control qubit) and an atomic ensemble (which provides register qubits). In principle, our scheme can achieve precision scaling with the size of the ensemble—which can extend to large numbers of atoms—while using only single-qubit operations on the control and bulk operations on the ensemble. We investigate realistic implementation of the interferometer, and
our main aim is to develop an approach to quantum metrology that can achieve quantum-enhanced measurement precision by exploiting coherent operations on large impure quantum states. We propose an experiment to demonstrate the enhanced sensitivity of the protocol and to investigate a transition from classical to supraclassical sensitivity which occurs when using highly mixed probe states.
Viewing alternatives
Download history
Metrics
Public Attention
Altmetrics from AltmetricNumber of Citations
Citations from DimensionsItem Actions
Export
About
- Item ORO ID
- 45333
- Item Type
- Journal Item
- ISSN
- 1094-1622
- Project Funding Details
-
Funded Project Name Project ID Funding Body Testing the computational power of discord (SP-12-065-SB) EP/K022938/1 EPSRC (Engineering and Physical Sciences Research Council) - Keywords
- Cold atoms; quantum metrology; quantum correlations
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Research Group
- Physics
- Copyright Holders
- © 2016 American Physical Society
- Related URLs
- Depositing User
- Calum MacCormick