Super sensitivity and super resolution with quantum teleportation

J. Borregaard*, Tobias Gehring, Jonas Schou Neergaard-Nielsen, Ulrik Lund Andersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We propose a method for quantum enhanced phase estimation based on continuous variable (CV) quantum teleportation. The phase shift probed by a coherent state can be enhanced by repeatedly teleporting the state back to interact with the phase shift again using a supply of two-mode squeezed vacuum states. In this way a sequential protocol exhibiting both super-resolution and super-sensitivity can be obtained due to the coherent addition of the phase shift. The protocol enables Heisenberg-limited sensitivity and super-resolution given sufficiently strong squeezing. The proposed method could be implemented with current or near-term technology of CV teleportation.
Original languageEnglish
Article number16
Journaln p j Quantum Information
Volume5
Issue number1
Number of pages6
ISSN2056-6387
DOIs
Publication statusPublished - 2019

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