Practical limits of error correction for quantum metrology. (20th April 2021)

• Record Type: Journal Article
• Authors: Shettell, Nathan; Munro, William J; Markham, Damian; Nemoto, Kae
• Is Part Of: New journal of physics. Volume 23:Number 4(2021)
• Publication Date: 2021-04-20
• Subjects: quantum metrology -- quantum error correction -- Heisenberg scaling; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/abf533
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: Noise is the greatest obstacle in quantum metrology that limits it achievable precision and sensitivity. There are many techniques to mitigate the effect of noise, but this can never be done completely. One commonly proposed technique is to repeatedly apply quantum error correction. Unfortunately, the required repetition frequency needed to recover the Heisenberg limit is unachievable with the existing quantum technologies. In this article we explore the discrete application of quantum error correction with current technological limitations in mind. We establish that quantum error correction can be beneficial and highlight the factors which need to be improved so one can reliably reach the Heisenberg limit level precision.