Super sensitivity and super resolution with quantum teleportation

TY - JOUR

T1 - Super sensitivity and super resolution with quantum teleportation

AU - Borregaard, J.

AU - Gehring, T.

AU - Neergaard-Nielsen, J. S.

AU - Andersen, U. L.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85071925274&partnerID=8YFLogxK

U2 - 10.1038/s41534-019-0132-4

DO - 10.1038/s41534-019-0132-4

M3 - Journal article

AN - SCOPUS:85071925274

SN - 2056-6387

VL - 5

JO - npj Quantum Information

JF - npj Quantum Information

IS - 1

M1 - 16

ER -